I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one inaction yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
requires evaporation, not just stopping the heart. I could connect a milliammeter across the USB one's output, but I don't want to break the meter if there's a strong pulse to start with. The USB one states 1A 5V input, so the output couldn'tcontinuously exceed only 3mA, unless it drops to 100V and gives out 50mA, and the output drops from 1700V to 0V immediately I turn it off (with an antique electrostatic voltmeter connected which may draw a bit).
Is your electrostatic voltmeter leaky? It should only "draw" a charge,
not a current.
BTW I don't want my wasps fried, because then the spider to which I
offer them is not interested. They have to wake up and flutter, then she swoops and bites...
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one inaction yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
<CK1@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
On Fri, 06 May 2022 17:06:28 +0100, <jlarkin@highlandsniptechnology.com> wrote:in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one in
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.It wouldn't be hard to measure. Or google.
The mains one is just a 240V to 2000V transformer directly connected to the rails.That sounds lethal to bugs and to humans. And a fire hazard.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one in
These devices used to make a loud noise as they discharged a capacitorIt wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the insect explodes too violently the bacteria-laden fragments are dispersed
over a wide area. It is much better just to cook them without fragmentation. I did once come across a standard for such devices - I will see if I can find it.
John
On Fri, 06 May 2022 16:31:25 +0100, Mike Coon <gravity@mjcoon.plus.com> wrote:in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
continuously exceed only 3mA, unless it drops to 100V and gives out 50mA, and the output drops from 1700V to 0V immediately I turn it off (with an antique electrostatic voltmeter connected which may draw a bit).requires evaporation, not just stopping the heart. I could connect a milliammeter across the USB one's output, but I don't want to break the meter if there's a strong pulse to start with. The USB one states 1A 5V input, so the output couldn't
Is your electrostatic voltmeter leaky? It should only "draw" a charge,
not a current.
I'm not familiar with electrostatic voltmeters. I bought it as an antique and was surprised it works. A normal voltmeter draws current does it not?
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
<CK1@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jlarkin@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
It wouldn't be hard to measure. Or google.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one in
These devices used to make a loud noise as they discharged a capacitorIt wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the >insect explodes too violently the bacteria-laden fragments are dispersed
over a wide area. It is much better just to cook them without fragmentation. >I did once come across a standard for such devices - I will see if I can find it.
John
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one in
These devices used to make a loud noise as they discharged a capacitorIt wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the insect explodes too violently the bacteria-laden fragments are dispersed
over a wide area. It is much better just to cook them without fragmentation. I did once come across a standard for such devices - I will see if I can find it.
John
In article <op.1lq7pcwlmvhs6z@ryzen.lan>, CK1@nospam.com says...one in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death
On Fri, 06 May 2022 16:31:25 +0100, Mike Coon <gravity@mjcoon.plus.com> wrote:
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB
continuously exceed only 3mA, unless it drops to 100V and gives out 50mA, and the output drops from 1700V to 0V immediately I turn it off (with an antique electrostatic voltmeter connected which may draw a bit).requires evaporation, not just stopping the heart. I could connect a milliammeter across the USB one's output, but I don't want to break the meter if there's a strong pulse to start with. The USB one states 1A 5V input, so the output couldn't
From what I remember of the one we had in our physics department at
Is your electrostatic voltmeter leaky? It should only "draw" a charge,
not a current.
I'm not familiar with electrostatic voltmeters. I bought it as an antique and was surprised it works. A normal voltmeter draws current does it not?
college they measure the electrostatic attraction between a pair (or
multiple pairs) of plates connected to the input. So the whole thing is
a capacitor of variable value, because the plates move in relation to
each other. Thus the only current flow should be that needed to charge
up that capacitor. (Unless there is leakage.)
John Walliker wrote:action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one in
These devices used to make a loud noise as they discharged a capacitorIt wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the
insect explodes too violently the bacteria-laden fragments are dispersed
over a wide area. It is much better just to cook them without fragmentation.
I did once come across a standard for such devices - I will see if I can find it.
John
Bacteria-laden fragments over a wide area? From a mosquito whose total
mass is a few milligrams?
Sure must be peaceful where you live, if that's the biggest worry. ;)
On Friday, May 6, 2022 at 11:44:05 AM UTC-7, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
[about a bug zapper]
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
The 'transformer' may be a potted circuit, with current limits like
in a neon transformer. It won't be tightly line-coupled like an ideal
power transformer.
On Fri, 6 May 2022 12:16:10 -0700 (PDT), whit3rd <whit3rd@gmail.com>
wrote:
On Friday, May 6, 2022 at 11:44:05 AM UTC-7, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
[about a bug zapper]
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
The 'transformer' may be a potted circuit, with current limits like
in a neon transformer. It won't be tightly line-coupled like an ideal
power transformer.
Any 60 Hz
transformer that makes kilovolts is going to be huge. Loose
coupling and potting make them huger.
The old neon sign transformers were huge; the modern one are high
frequency oscillators. The old ones looked nicer for some reason.
When I was a kid I had an infinite supply of used neon sign
transformers. Fun. The double-ended 18 KV was my favorite, but it must
have weighed 20 pounds.
The old oil-filled car ignition transformers were cool too, driven
from an oil cap through a thyratron. 3" sparks.
On Fri, 6 May 2022 12:02:11 -0700 (PDT), John Wallikerin action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
<jrwalliker@gmail.com> wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
These devices used to make a loud noise as they discharged a capacitorIt wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the
insect explodes too violently the bacteria-laden fragments are dispersed
over a wide area. It is much better just to cook them without fragmentation.
I did once come across a standard for such devices - I will see if I can find it.
John
I'd rather a mosquito go POP 10 feet away, than it being smooshed
against my arm after it bit me.
The bug zapper schematics that I can google are mostly a tiny blocking oscillator driving a step-up flyback into a capacitor. Must be
milliwatts into the cap.
On Fri, 06 May 2022 23:07:32 +0100, John Larkin <jlarkin@highland_atwork_technology.com> wrote:unharmed.
On Fri, 6 May 2022 12:16:10 -0700 (PDT), whit3rd <whi...@gmail.com>
wrote:
On Friday, May 6, 2022 at 11:44:05 AM UTC-7, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
[about a bug zapper]
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
The 'transformer' may be a potted circuit, with current limits like
in a neon transformer. It won't be tightly line-coupled like an ideal
power transformer.
Any 60 Hz50, I live in the modern world.
transformer that makes kilovolts is going to be huge. LooseOnly huge if high power. Mine is about 1.5 inches x 1.5 inches x 1.5 inches.
coupling and potting make them huger.
The old neon sign transformers were huge; the modern one are high frequency oscillators. The old ones looked nicer for some reason.The light output or the circuit looked nicer?
When I was a kid I had an infinite supply of used neon signHow many friends did you torture with it?
transformers. Fun. The double-ended 18 KV was my favorite, but it must have weighed 20 pounds.
The old oil-filled car ignition transformers were cool too, drivenCould you kill someone with those? I've been told that contrary to popular belief, the "modern" ones from the 90s (pre electronic ignition) didn't have enough current to kill you. I heard of one mechanic grabbing one, he couldn't let go but he was
from an oil cap through a thyratron. 3" sparks.
John Walliker wrote:action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one in
These devices used to make a loud noise as they discharged a capacitorIt wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the
insect explodes too violently the bacteria-laden fragments are dispersed
over a wide area. It is much better just to cook them without fragmentation.
I did once come across a standard for such devices - I will see if I can find it.
John
Bacteria-laden fragments over a wide area? From a mosquito whose total
mass is a few milligrams?
Sure must be peaceful where you live, if that's the biggest worry. ;)
Cheers
Phil Hobbs
On Fri, 6 May 2022 16:43:06 -0400, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
John Walliker wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
These devices used to make a loud noise as they discharged a capacitorIt wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the >>> insect explodes too violently the bacteria-laden fragments are dispersed >>> over a wide area. It is much better just to cook them without fragmentation.
I did once come across a standard for such devices - I will see if I can find it.
John
Bacteria-laden fragments over a wide area? From a mosquito whose total
mass is a few milligrams?
Sure must be peaceful where you live, if that's the biggest worry. ;)
Cheers
Phil Hobbs
Speak for yourself. Where I grew up, the mosquitoes were as big as
chickens.
lørdag den 7. maj 2022 kl. 00.54.24 UTC+2 skrev Commander Kinsey:unharmed.
On Fri, 06 May 2022 23:07:32 +0100, John Larkin <jlarkin@highland_atwork_technology.com> wrote:
On Fri, 6 May 2022 12:16:10 -0700 (PDT), whit3rd <whi...@gmail.com>50, I live in the modern world.
wrote:
On Friday, May 6, 2022 at 11:44:05 AM UTC-7, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
[about a bug zapper]
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
The 'transformer' may be a potted circuit, with current limits like
in a neon transformer. It won't be tightly line-coupled like an ideal
power transformer.
Any 60 Hz
transformer that makes kilovolts is going to be huge. LooseOnly huge if high power. Mine is about 1.5 inches x 1.5 inches x 1.5 inches. >> > The old neon sign transformers were huge; the modern one are high
coupling and potting make them huger.
frequency oscillators. The old ones looked nicer for some reason.The light output or the circuit looked nicer?
When I was a kid I had an infinite supply of used neon signHow many friends did you torture with it?
transformers. Fun. The double-ended 18 KV was my favorite, but it must
have weighed 20 pounds.
The old oil-filled car ignition transformers were cool too, drivenCould you kill someone with those? I've been told that contrary to popular belief, the "modern" ones from the 90s (pre electronic ignition) didn't have enough current to kill you. I heard of one mechanic grabbing one, he couldn't let go but he was
from an oil cap through a thyratron. 3" sparks.
and ignition coil is a few 100 mJ, a defibrillator is 1000x that
On Fri, 06 May 2022 20:02:11 +0100, John Walliker <jrwalliker@gmail.com> wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"These devices used to make a loud noise as they discharged a capacitor
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100,<jla...@highlandsniptechnology.com> wrote:
2000V. I have a USB one which makes 1700V. I can and have measured
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes
those. The mains one is very effective, I see it frying wasps. I
haven't had the opportunity to see the USB one in action yet and I'm
wondering if it will do anything useful. How much current is required
to kill the insect? I know 80mA+ is needed to kill a human through
the heart, but I get the feeling with insects the death requires
evaporation, not just stopping the heart. I could connect a
milliammeter across the USB one's output, but I don't want to break
the meter if there's a strong pulse to start with. The USB one states
1A 5V input, so the output couldn't continuously exceed only 3mA,
unless it drops to 100V and gives out 50mA, and the output drops from
1700V to 0V immediately I turn it off (with an antique electrostatic
voltmeter connected which may draw a bit).
I doubt there's a cap in it.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly,
It wouldn't be hard to measure. Or google.
to the rails.
The mains one is just a 240V to 2000V transformer directly connected
That sounds lethal to bugs and to humans. And a fire hazard.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the
insect explodes too violently the bacteria-laden fragments are dispersed
over a wide area. It is much better just to cook them without
fragmentation.
I did once come across a standard for such devices - I will see if I
can find it.
John
That would be why the decent one I have fries them gently, while the
cheap Chinese USB one uses a capacitor.
On Sat, 07 May 2022 00:56:42 +0100, John Larkin <jlarkin@highland_atwork_technology.com> wrote:in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Fri, 6 May 2022 16:43:06 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
John Walliker wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
These devices used to make a loud noise as they discharged a capacitor >>>> into the insect. This is no longer considered a good idea because if the >>>> insect explodes too violently the bacteria-laden fragments are dispersed >>>> over a wide area. It is much better just to cook them without fragmentation.It wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito. >>>>>
I did once come across a standard for such devices - I will see if I can find it.
John
Bacteria-laden fragments over a wide area? From a mosquito whose total
mass is a few milligrams?
Sure must be peaceful where you live, if that's the biggest worry. ;)
Cheers
Phil Hobbs
Speak for yourself. Where I grew up, the mosquitoes were as big as
chickens.
I live in Scotland. If you don't, you don't know what a mosquito is.
On Fri, 6 May 2022 16:43:06 -0400, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
John Walliker wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
These devices used to make a loud noise as they discharged a capacitorIt wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the >>> insect explodes too violently the bacteria-laden fragments are dispersed >>> over a wide area. It is much better just to cook them without fragmentation.
I did once come across a standard for such devices - I will see if I can find it.
John
Bacteria-laden fragments over a wide area? From a mosquito whose total
mass is a few milligrams?
Sure must be peaceful where you live, if that's the biggest worry. ;)
Speak for yourself. Where I grew up, the mosquitoes were as big as
chickens.
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"wrote:
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100,
<jla...@highlandsniptechnology.com>
0V. I have a USB one which makes 1700V. I can and have measured
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which
makes 200
those. The mains one is very effective, I see it frying wasps. I
haven't had the opportunity to see the USB one in action yet and
I'm wondering if it will do anything useful. How much current is
required to kill the insect? I know 80mA+ is needed to kill a
human through the heart, but I get the feeling with insects the
death requires evaporation, not just stopping the heart. I could
connect a milliammeter across the USB one's output, but I don't
want to break the meter if there's a strong pulse to start with.
The USB one states 1A 5V input, so the output couldn't
continuously exceed only 3mA, unless it drops to 100V and gives
out 50mA, and the output drops from 1700V to 0V immediately I turn
it off (with an antique electrostatic voltmeter connected which
may draw a bit).
ubt there's a cap in it.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0
instantly, I do
It wouldn't be hard to measure. Or google.the rails.
The mains one is just a 240V to 2000V transformer directly
connected to
That sounds lethal to bugs and to humans. And a fire hazard.These devices used to make a loud noise as they discharged a
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a
mosquito.
capacitor into the insect. This is no longer considered a good
idea because if the insect explodes too violently the
bacteria-laden fragments are dispersed over a wide area. It is
much better just to cook them without fragmentation. I did once
come across a standard for such devices - I will see if I can find
it. John
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes
2000V. I have a USB one which makes 1700V. I can and have
measured those. The mains one is very effective, I see it frying
wasps. I haven't had the opportunity to see the USB one in action
yet and I'm wondering if it will do anything useful. How much
current is required to kill the insect? I know 80mA+ is needed to
kill a human through the heart, but I get the feeling with insects
the death requires evaporation, not just stopping the heart. I
could connect a milliammeter across the USB one's output, but I
don't want to break the meter if there's a strong pulse to start
with. The USB one states 1A 5V input, so the output couldn't
continuously exceed only 3mA, unless it drops to 100V and gives
out 50mA, and the output drops from 1700V to 0V immediately I turn
it off (with an antique electrostatic voltmeter connected which
may draw a bit).
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
On Fri, 06 May 2022 23:07:32 +0100, John Larkin <jlarkin@highland_atwork_technology.com> wrote:
On Fri, 6 May 2022 12:16:10 -0700 (PDT), whit3rd <whit3rd@gmail.com>
wrote:
On Friday, May 6, 2022 at 11:44:05 AM UTC-7, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
[about a bug zapper]
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
The 'transformer' may be a potted circuit, with current limits like
in a neon transformer. It won't be tightly line-coupled like an ideal
power transformer.
Any 60 Hz
50, I live in the modern world.
transformer that makes kilovolts is going to be huge. Loose
coupling and potting make them huger.
Only huge if high power. Mine is about 1.5 inches x 1.5 inches x 1.5 inches.
The old neon sign transformers were huge; the modern one are high
frequency oscillators. The old ones looked nicer for some reason.
The light output or the circuit looked nicer?
When I was a kid I had an infinite supply of used neon sign
transformers. Fun. The double-ended 18 KV was my favorite, but it must
have weighed 20 pounds.
How many friends did you torture with it?
unharmed.The old oil-filled car ignition transformers were cool too, driven
from an oil cap through a thyratron. 3" sparks.
Could you kill someone with those? I've been told that contrary to popular belief, the "modern" ones from the 90s (pre electronic ignition) didn't have enough current to kill you. I heard of one mechanic grabbing one, he couldn't let go but he was
On Fri, 6 May 2022 12:16:10 -0700 (PDT), whit3rd <whit3rd@gmail.com>
wrote:
On Friday, May 6, 2022 at 11:44:05 AM UTC-7, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
[about a bug zapper]
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
The 'transformer' may be a potted circuit, with current limits like
in a neon transformer. It won't be tightly line-coupled like an ideal >>power transformer.
Any 60 Hz transformer that makes kilovolts is going to be huge. Loose >coupling and potting make them huger.
The old neon sign transformers were huge; the modern one are high
frequency oscillators. The old ones looked nicer for some reason.
When I was a kid I had an infinite supply of used neon sign
transformers. Fun. The double-ended 18 KV was my favorite, but it must
have weighed 20 pounds.
The old oil-filled car ignition transformers were cool too, driven
from an oil cap through a thyratron. 3" sparks.
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...continuously exceed only 3mA, unless it drops to 100V and gives out 50mA, and the output drops from 1700V to 0V immediately I turn it off (with an antique electrostatic voltmeter connected which may draw a bit).
requires evaporation, not just stopping the heart. I could connect a milliammeter across the USB one's output, but I don't want to break the meter if there's a strong pulse to start with. The USB one states 1A 5V input, so the output couldn't
Is your electrostatic voltmeter leaky? It should only "draw" a charge,
not a current.
BTW I don't want my wasps fried, because then the spider to which I
offer them is not interested. They have to wake up and flutter, then she swoops and bites...
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
<CK1@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jlarkin@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
It wouldn't be hard to measure. Or google.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
On 5/6/2022 10:31 AM, Mike Coon wrote:continuously exceed only 3mA, unless it drops to 100V and gives out 50mA, and the output drops from 1700V to 0V immediately I turn it off (with an antique electrostatic voltmeter connected which may draw a bit).
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...
requires evaporation, not just stopping the heart. I could connect a milliammeter across the USB one's output, but I don't want to break the meter if there's a strong pulse to start with. The USB one states 1A 5V input, so the output couldn't
Is your electrostatic voltmeter leaky? It should only "draw" a charge,
not a current.
BTW I don't want my wasps fried, because then the spider to which I
offer them is not interested. They have to wake up and flutter, then she swoops and bites...
Cool ! What kinda spider you got. :-)
I live in Scotland. If you don't, you don't know what a mosquito is.
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
<CK1@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jlarkin@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
It wouldn't be hard to measure. Or google.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
On 5/6/2022 10:31 AM, Mike Coon wrote:
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...
requires evaporation, not just stopping the heart. I could connect a
milliammeter across the USB one's output, but I don't want to break
the meter if there's a strong pulse to start with. The USB one states
1A 5V input, so the output couldn't continuously exceed only 3mA,
unless it drops to 100V and gives out 50mA, and the output drops from
1700V to 0V immediately I turn it off (with an antique electrostatic
voltmeter connected which may draw a bit).
Is your electrostatic voltmeter leaky? It should only "draw" a charge,
not a current.
BTW I don't want my wasps fried, because then the spider to which I
offer them is not interested. They have to wake up and flutter, then she
swoops and bites...
Cool ! What kinda spider you got. :-)
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
<CK1@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one in
These devices used to make a loud noise as they discharged a capacitorIt wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the insect explodes too violently the bacteria-laden fragments are dispersed
over a wide area. It is much better just to cook them without fragmentation. I did once come across a standard for such devices - I will see if I can find it.
John
On 5/7/2022 2:05 AM, g_wolf wrote:
On 5/6/2022 10:31 AM, Mike Coon wrote:
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...
requires evaporation, not just stopping the heart. I could connect a
milliammeter across the USB one's output, but I don't want to break
the meter if there's a strong pulse to start with. The USB one states
1A 5V input, so the output couldn't continuously exceed only 3mA,
unless it drops to 100V and gives out 50mA, and the output drops from
1700V to 0V immediately I turn it off (with an antique electrostatic
voltmeter connected which may draw a bit).
Is your electrostatic voltmeter leaky? It should only "draw" a charge,
not a current.
BTW I don't want my wasps fried, because then the spider to which I
offer them is not interested. They have to wake up and flutter, then she >> swoops and bites...
Cool ! What kinda spider you got. :-)
Wolf spider?
In article <2TodK.6666$t72a.1025@fx10.iad>, g_wolf@howl.com says...continuously exceed only 3mA, unless it drops to 100V and gives out 50mA, and the output drops from 1700V to 0V immediately I turn it off (with an antique electrostatic voltmeter connected which may draw a bit).
On 5/6/2022 10:31 AM, Mike Coon wrote:
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...
requires evaporation, not just stopping the heart. I could connect a milliammeter across the USB one's output, but I don't want to break the meter if there's a strong pulse to start with. The USB one states 1A 5V input, so the output couldn't
Is your electrostatic voltmeter leaky? It should only "draw" a charge,
not a current.
BTW I don't want my wasps fried, because then the spider to which I
offer them is not interested. They have to wake up and flutter, then she >> > swoops and bites...
Cool ! What kinda spider you got. :-)
It's called a noble false widow >(https://en.wikipedia.org/wiki/Steatoda_nobilis). Not native to the UK
but spreading. When they have egg sacs that hatch into armies of
spiderlings that is when they get hoovered up...
On Sat, 07 May 2022 00:58:20 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
On Sat, 07 May 2022 00:56:42 +0100, John Larkin <jlarkin@highland_atwork_technology.com> wrote:
On Fri, 6 May 2022 16:43:06 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
Bacteria-laden fragments over a wide area? From a mosquito whose total >>>> mass is a few milligrams?
Sure must be peaceful where you live, if that's the biggest worry. ;)
Cheers
Phil Hobbs
Speak for yourself. Where I grew up, the mosquitoes were as big as
chickens.
I live in Scotland. If you don't, you don't know what a mosquito is.
We hunted them with shotguns.
Commander Kinsey wrote:
On Fri, 06 May 2022 20:02:11 +0100, John Walliker <jrwalliker@gmail.com>
wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"These devices used to make a loud noise as they discharged a capacitor
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100,<jla...@highlandsniptechnology.com> wrote:
2000V. I have a USB one which makes 1700V. I can and have measured
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes
those. The mains one is very effective, I see it frying wasps. I
haven't had the opportunity to see the USB one in action yet and I'm
wondering if it will do anything useful. How much current is required
to kill the insect? I know 80mA+ is needed to kill a human through
the heart, but I get the feeling with insects the death requires
evaporation, not just stopping the heart. I could connect a
milliammeter across the USB one's output, but I don't want to break
the meter if there's a strong pulse to start with. The USB one states
1A 5V input, so the output couldn't continuously exceed only 3mA,
unless it drops to 100V and gives out 50mA, and the output drops from
1700V to 0V immediately I turn it off (with an antique electrostatic
voltmeter connected which may draw a bit).
I doubt there's a cap in it.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly,
It wouldn't be hard to measure. Or google.
to the rails.
The mains one is just a 240V to 2000V transformer directly connected
That sounds lethal to bugs and to humans. And a fire hazard.
One outfit that I work with considers 9 joules the be the human
threshold of death. I'd guess that 1 joule would take out a mosquito.
into the insect. This is no longer considered a good idea because if the >>> insect explodes too violently the bacteria-laden fragments are dispersed >>> over a wide area. It is much better just to cook them without
fragmentation.
I did once come across a standard for such devices - I will see if I
can find it.
John
That would be why the decent one I have fries them gently, while the
cheap Chinese USB one uses a capacitor.
Mine give a nice satisfying 120-hertz-plus-harmonics bzzzaaappp.
"Die, mozzie scum!" ;)
They also have mushroom oil (octenol) pads on the bottom.
On 06/05/2022 19:43, John Larkin wrote:one in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jlarkin@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
It wouldn't be hard to measure. Or google.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
They are potentially. But the safety interlocks are quite good to stop
humans whilst still allowing flies and insects free access.
A stately home come country house hotel was seriously damaged by an accumulation of dead flies in such a device a couple of years back.
You can smell burning insect it it gets a particularly big moth. UV
fluoro light trap and HT bars - looks to me like a neon driver
transformer soa couple of mA at a fairly high voltage.
https://www.bbc.co.uk/news/uk-england-tees-29702125
We have them in our VH. Emptying the dead fly trays was moved up the important routine checks list after that fire.
On Fri, 06 May 2022 23:54:15 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
On Fri, 06 May 2022 23:07:32 +0100, John Larkin <jlarkin@highland_atwork_technology.com> wrote:
On Fri, 6 May 2022 12:16:10 -0700 (PDT), whit3rd <whit3rd@gmail.com>
wrote:
On Friday, May 6, 2022 at 11:44:05 AM UTC-7, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
[about a bug zapper]
The mains one is just a 240V to 2000V transformer directly connected to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
The 'transformer' may be a potted circuit, with current limits like
in a neon transformer. It won't be tightly line-coupled like an ideal >>>> power transformer.
Any 60 Hz
50, I live in the modern world.
transformer that makes kilovolts is going to be huge. Loose
coupling and potting make them huger.
Only huge if high power. Mine is about 1.5 inches x 1.5 inches x 1.5 inches.
The old neon sign transformers were huge; the modern one are high
frequency oscillators. The old ones looked nicer for some reason.
The light output or the circuit looked nicer?
The light in the neon tubes looked better with 60 Hz HV AC, sharper.
The RF ones look fake and fuzzy.
When I was a kid I had an infinite supply of used neon sign
transformers. Fun. The double-ended 18 KV was my favorite, but it must
have weighed 20 pounds.
How many friends did you torture with it?
Darn, I clean forgot to do that.
unharmed.The old oil-filled car ignition transformers were cool too, driven
from an oil cap through a thyratron. 3" sparks.
Could you kill someone with those? I've been told that contrary to popular belief, the "modern" ones from the 90s (pre electronic ignition) didn't have enough current to kill you. I heard of one mechanic grabbing one, he couldn't let go but he was
A car spark is roughly 50 millijoules per shot. Painful but not
deadly.
In article <op.1lrt7ibcmvhs6z@ryzen.lan>, CK1@nospam.com says...
I live in Scotland. If you don't, you don't know what a mosquito is.
I'm waiting for a Scot to invent a small dirigible modelled on a basking shark crossed with a Dyson vacuum. It would patrol up and down hoovering
up the midges into a net...
On 5/6/2022 11:06 AM, jlarkin@highlandsniptechnology.com wrote:in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<CK1@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Sure. Try killing a spider with 1J at 1V.
On Sat, 7 May 2022 10:41:01 +0100, Mike Coon <gravity@mjcoon.plus.com>continuously exceed only 3mA, unless it drops to 100V and gives out 50mA, and the output drops from 1700V to 0V immediately I turn it off (with an antique electrostatic voltmeter connected which may draw a bit).
wrote:
In article <2TodK.6666$t72a.1025@fx10.iad>, g_wolf@howl.com says...
On 5/6/2022 10:31 AM, Mike Coon wrote:
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...
requires evaporation, not just stopping the heart. I could connect a milliammeter across the USB one's output, but I don't want to break the meter if there's a strong pulse to start with. The USB one states 1A 5V input, so the output couldn't
Is your electrostatic voltmeter leaky? It should only "draw" a charge, >>> > not a current.
BTW I don't want my wasps fried, because then the spider to which I
offer them is not interested. They have to wake up and flutter, then she >>> > swoops and bites...
Cool ! What kinda spider you got. :-)
It's called a noble false widow
(https://en.wikipedia.org/wiki/Steatoda_nobilis). Not native to the UK
but spreading. When they have egg sacs that hatch into armies of
spiderlings that is when they get hoovered up...
I wonder what this is:
https://www.dropbox.com/s/e7q18eo1al8n3x4/Take-out.jpg?raw=1
We have almost no insects inside. The few spiders eat all the rest.
On Fri, 06 May 2022 20:02:11 +0100, John Walliker <jrwalliker@gmail.com> wrote:in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
It wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death.
On Fri, 06 May 2022 23:02:40 +0100, Commander Kinsey <C...@nospam.com> wrote:in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just stopping
On Fri, 06 May 2022 20:02:11 +0100, John Walliker <jrwal...@gmail.com> wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB one
Strange way to measure it. If you took 9 joules over a period of 1 hour, it wouldn't kill you. Surely current is a better measure? 80mA stops the heart I believe, which is why breakers trip at 30 or 50.It wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death.
I wonder what this is:
https://www.dropbox.com/s/e7q18eo1al8n3x4/Take-out.jpg?raw=1
We have almost no insects inside. The few spiders eat all the rest.
On Sat, 07 May 2022 15:32:27 +0100, <jlarkin@highlandsniptechnology.com> wrote:continuously exceed only 3mA, unless it drops to 100V and gives out 50mA, and the output drops from 1700V to 0V immediately I turn it off (with an antique electrostatic voltmeter connected which may draw a bit).
On Sat, 7 May 2022 10:41:01 +0100, Mike Coon <gravity@mjcoon.plus.com> wrote:
In article <2TodK.6666$t72a.1025@fx10.iad>, g_wolf@howl.com says...
On 5/6/2022 10:31 AM, Mike Coon wrote:
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...
requires evaporation, not just stopping the heart. I could connect a milliammeter across the USB one's output, but I don't want to break the meter if there's a strong pulse to start with. The USB one states 1A 5V input, so the output couldn't
Is your electrostatic voltmeter leaky? It should only "draw" a charge, >>> > not a current.
BTW I don't want my wasps fried, because then the spider to which I
offer them is not interested. They have to wake up and flutter, then she
swoops and bites...
Cool ! What kinda spider you got. :-)
It's called a noble false widow
(https://en.wikipedia.org/wiki/Steatoda_nobilis). Not native to the UK
but spreading. When they have egg sacs that hatch into armies of
spiderlings that is when they get hoovered up...
I wonder what this is:
https://www.dropbox.com/s/e7q18eo1al8n3x4/Take-out.jpg?raw=1
We have almost no insects inside. The few spiders eat all the rest.
I kill the insects to starve the spiders.
On Sat, 07 May 2022 10:36:21 +0100, Mike Coon <gravity@mjcoon.plus.com> wrote:
In article <op.1lrt7ibcmvhs6z@ryzen.lan>, CK1@nospam.com says...
I live in Scotland. If you don't, you don't know what a mosquito is.
I'm waiting for a Scot to invent a small dirigible modelled on a basking shark crossed with a Dyson vacuum. It would patrol up and down hoovering
up the midges into a net...
ROFL! Actually there have been many attempts to cull mosquitoes, or midges, can't remember which, in Scotland. Can't find a link since those sort of searches are flooded out with how to stop them getting you on holiday.
I have the answer. Lifesystems Expedition 100+ - a spray you put on your bare flesh. Nothing will land on you. Even works on horses - I recommended it to a horser around here and she tried it! Keeps the flies off them.
On Saturday, May 7, 2022 at 10:09:46 AM UTC-7, Commander Kinsey wrote:one in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
On Fri, 06 May 2022 23:02:40 +0100, Commander Kinsey <C...@nospam.com> wrote:
On Fri, 06 May 2022 20:02:11 +0100, John Walliker <jrwal...@gmail.com> wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB
Strange way to measure it. If you took 9 joules over a period of 1 hour, it wouldn't kill you. Surely current is a better measure? 80mA stops the heart I believe, which is why breakers trip at 30 or 50.It wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death.
Circuit breakers trip at 30A or 50A, right?
So, is 600W (200V 3A) battery safe? I got shocked a few times, especially when my fingers are wet. It wasn't bad enough to kill me, or i would not be posting this.
I plan to have banks of 200V batteries attached to either side of the car door. In addition to better weight distribution, nobody should touch both (400V) at the same time. Furthermore, i can eject the doors in case of fire.
How about 200V 10A, 20A or 30A?
In article <op.1ls4v6yxmvhs6z@ryzen.lan>, CK1@nospam.com says...
On Sat, 07 May 2022 10:36:21 +0100, Mike Coon <gravity@mjcoon.plus.com> wrote:
In article <op.1lrt7ibcmvhs6z@ryzen.lan>, CK1@nospam.com says...
I live in Scotland. If you don't, you don't know what a mosquito is.
I'm waiting for a Scot to invent a small dirigible modelled on a basking >> > shark crossed with a Dyson vacuum. It would patrol up and down hoovering >> > up the midges into a net...
ROFL! Actually there have been many attempts to cull mosquitoes, or midges, can't remember which, in Scotland. Can't find a link since those sort of searches are flooded out with how to stop them getting you on holiday.
I have the answer. Lifesystems Expedition 100+ - a spray you put on your bare flesh. Nothing will land on you. Even works on horses - I recommended it to a horser around here and she tried it! Keeps the flies off them.
Oh, I thought for a moment you were referring to one of those winged horses...
In article <op.1ls4y8e1mvhs6z@ryzen.lan>, CK1@nospam.com says...continuously exceed only 3mA, unless it drops to 100V and gives out 50mA, and the output drops from 1700V to 0V immediately I turn it off (with an antique electrostatic voltmeter connected which may draw a bit).
On Sat, 07 May 2022 15:32:27 +0100, <jlarkin@highlandsniptechnology.com> wrote:
On Sat, 7 May 2022 10:41:01 +0100, Mike Coon <gravity@mjcoon.plus.com>
wrote:
In article <2TodK.6666$t72a.1025@fx10.iad>, g_wolf@howl.com says...
On 5/6/2022 10:31 AM, Mike Coon wrote:
In article <op.1lqyzpe3mvhs6z@ryzen.lan>, CK1@nospam.com says...
requires evaporation, not just stopping the heart. I could connect a milliammeter across the USB one's output, but I don't want to break the meter if there's a strong pulse to start with. The USB one states 1A 5V input, so the output couldn't
Is your electrostatic voltmeter leaky? It should only "draw" a charge, >> >>> > not a current.
BTW I don't want my wasps fried, because then the spider to which I
offer them is not interested. They have to wake up and flutter, then she
swoops and bites...
Cool ! What kinda spider you got. :-)
It's called a noble false widow
(https://en.wikipedia.org/wiki/Steatoda_nobilis). Not native to the UK
but spreading. When they have egg sacs that hatch into armies of
spiderlings that is when they get hoovered up...
I wonder what this is:
https://www.dropbox.com/s/e7q18eo1al8n3x4/Take-out.jpg?raw=1
We have almost no insects inside. The few spiders eat all the rest.
I kill the insects to starve the spiders.
Did you read the wikipedia article about "my" spider and their ability
to bite people? Better to keep them well fed, methinks...
On Sat, 07 May 2022 19:01:35 +0100, Ed Lee <edward....@gmail.com> wrote:one in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
On Saturday, May 7, 2022 at 10:09:46 AM UTC-7, Commander Kinsey wrote:
On Fri, 06 May 2022 23:02:40 +0100, Commander Kinsey <C...@nospam.com> wrote:
On Fri, 06 May 2022 20:02:11 +0100, John Walliker <jrwal...@gmail.com> wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB
Strange way to measure it. If you took 9 joules over a period of 1 hour, it wouldn't kill you. Surely current is a better measure? 80mA stops the heart I believe, which is why breakers trip at 30 or 50.It wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death.
Circuit breakers trip at 30A or 50A, right?mA, I was obviously talking about the earth leakage variety. The 30A/50A ones are overload breakers to stop fires when you melt wires.
So, is 600W (200V 3A) battery safe? I got shocked a few times, especially when my fingers are wet. It wasn't bad enough to kill me, or i would not be posting this.That should be able to kill you, but it has to pass through your heart, and you need a weak heart.
What battery is 200V and 3A?!
I plan to have banks of 200V batteries attached to either side of the car door. In addition to better weight distribution, nobody should touch both (400V) at the same time. Furthermore, i can eject the doors in case of fire.
How about 200V 10A, 20A or 30A?To stop a car theif, use kV.
On Saturday, May 7, 2022 at 11:45:21 AM UTC-7, Commander Kinsey wrote:one in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
On Sat, 07 May 2022 19:01:35 +0100, Ed Lee <edward....@gmail.com> wrote:
On Saturday, May 7, 2022 at 10:09:46 AM UTC-7, Commander Kinsey wrote:
On Fri, 06 May 2022 23:02:40 +0100, Commander Kinsey <C...@nospam.com> wrote:
On Fri, 06 May 2022 20:02:11 +0100, John Walliker <jrwal...@gmail.com> wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the USB
mA, I was obviously talking about the earth leakage variety. The 30A/50A ones are overload breakers to stop fires when you melt wires.Strange way to measure it. If you took 9 joules over a period of 1 hour, it wouldn't kill you. Surely current is a better measure? 80mA stops the heart I believe, which is why breakers trip at 30 or 50.It wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death.
Circuit breakers trip at 30A or 50A, right?
OK, GFCI.
So, is 600W (200V 3A) battery safe? I got shocked a few times, especially when my fingers are wet. It wasn't bad enough to kill me, or i would not be posting this.That should be able to kill you, but it has to pass through your heart, and you need a weak heart.
I try to be careful to touch it with only one hand.
What battery is 200V and 3A?!
Half of a 400V battery, fused to 3A. Slow charging into 400V 66Ah.
I plan to have banks of 200V batteries attached to either side of the car door. In addition to better weight distribution, nobody should touch both (400V) at the same time. Furthermore, i can eject the doors in case of fire.To stop a car theif, use kV.
How about 200V 10A, 20A or 30A?
To drive the car too. 200V is much safer to carry it around.
On Saturday, May 7, 2022 at 2:35:26 PM UTC-7, Commander Kinsey wrote:USB one in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
On Sat, 07 May 2022 19:56:42 +0100, Ed Lee <edward....@gmail.com> wrote:
On Saturday, May 7, 2022 at 11:45:21 AM UTC-7, Commander Kinsey wrote:
On Sat, 07 May 2022 19:01:35 +0100, Ed Lee <edward....@gmail.com> wrote: >> >>
On Saturday, May 7, 2022 at 10:09:46 AM UTC-7, Commander Kinsey wrote: >> >> >> On Fri, 06 May 2022 23:02:40 +0100, Commander Kinsey <C...@nospam.com> wrote:
On Fri, 06 May 2022 20:02:11 +0100, John Walliker <jrwal...@gmail.com> wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the
Yeah if you want to call it that weird name. Let's change earth to ground, leakage to fault, and breaker to interrupter. It's sure to sell more to gullible folk.mA, I was obviously talking about the earth leakage variety. The 30A/50A ones are overload breakers to stop fires when you melt wires.Strange way to measure it. If you took 9 joules over a period of 1 hour, it wouldn't kill you. Surely current is a better measure? 80mA stops the heart I believe, which is why breakers trip at 30 or 50.It wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death.
Circuit breakers trip at 30A or 50A, right?
OK, GFCI.
Everybody know it by that name here.
Then you get a warm hand, no big deal. I've done that with 240V mains (no not the pansy 120V USA shit).So, is 600W (200V 3A) battery safe? I got shocked a few times, especially when my fingers are wet. It wasn't bad enough to kill me, or i would not be posting this.That should be able to kill you, but it has to pass through your heart, and you need a weak heart.
I try to be careful to touch it with only one hand.
What is this used for? I've never heard of such high voltage batteries.What battery is 200V and 3A?!
Half of a 400V battery, fused to 3A. Slow charging into 400V 66Ah.
It's custom build.
with repeated fast charging.Use an inverter.I plan to have banks of 200V batteries attached to either side of the car door. In addition to better weight distribution, nobody should touch both (400V) at the same time. Furthermore, i can eject the doors in case of fire.To stop a car theif, use kV.
How about 200V 10A, 20A or 30A?
To drive the car too. 200V is much safer to carry it around.
It's more efficient that way. The batteries are charged off the vehicle, and load/unload in parallel with the main, without the need to charge/discharge the energy from the main. It would also keep the main batteries cooler, which is a real problem
On Sat, 07 May 2022 19:56:42 +0100, Ed Lee <edward....@gmail.com> wrote:USB one in action yet and I'm wondering if it will do anything useful. How much current is required to kill the insect? I know 80mA+ is needed to kill a human through the heart, but I get the feeling with insects the death requires evaporation, not just
On Saturday, May 7, 2022 at 11:45:21 AM UTC-7, Commander Kinsey wrote:
On Sat, 07 May 2022 19:01:35 +0100, Ed Lee <edward....@gmail.com> wrote: >>
On Saturday, May 7, 2022 at 10:09:46 AM UTC-7, Commander Kinsey wrote: >> >> On Fri, 06 May 2022 23:02:40 +0100, Commander Kinsey <C...@nospam.com> wrote:
On Fri, 06 May 2022 20:02:11 +0100, John Walliker <jrwal...@gmail.com> wrote:
On Friday, 6 May 2022 at 19:44:05 UTC+1, John Larkin wrote:
On Fri, 06 May 2022 17:40:45 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
On Fri, 06 May 2022 17:06:28 +0100, <jla...@highlandsniptechnology.com> wrote:
On Fri, 06 May 2022 13:44:03 +0100, "Commander Kinsey"
<C...@nospam.com> wrote:
I'm talking about the bug zappers. I have a mains one which makes 2000V. I have a USB one which makes 1700V. I can and have measured those. The mains one is very effective, I see it frying wasps. I haven't had the opportunity to see the
mA, I was obviously talking about the earth leakage variety. The 30A/50A ones are overload breakers to stop fires when you melt wires.Strange way to measure it. If you took 9 joules over a period of 1 hour, it wouldn't kill you. Surely current is a better measure? 80mA stops the heart I believe, which is why breakers trip at 30 or 50.It wouldn't be hard to measure. Or google.
It's energy, from a capacitor, not current that kills bugs.
The cap charging current is likely microamps.
Since when I unplug the USB cord, the voltage drops to 0 instantly, I doubt there's a cap in it.
That sounds lethal to bugs and to humans. And a fire hazard.
The mains one is just a 240V to 2000V transformer directly connected to the rails.
One outfit that I work with considers 9 joules the be the human
threshold of death.
Circuit breakers trip at 30A or 50A, right?
OK, GFCI.Yeah if you want to call it that weird name. Let's change earth to ground, leakage to fault, and breaker to interrupter. It's sure to sell more to gullible folk.
So, is 600W (200V 3A) battery safe? I got shocked a few times, especially when my fingers are wet. It wasn't bad enough to kill me, or i would not be posting this.That should be able to kill you, but it has to pass through your heart, and you need a weak heart.
I try to be careful to touch it with only one hand.Then you get a warm hand, no big deal. I've done that with 240V mains (no not the pansy 120V USA shit).
What battery is 200V and 3A?!
Half of a 400V battery, fused to 3A. Slow charging into 400V 66Ah.What is this used for? I've never heard of such high voltage batteries.
I plan to have banks of 200V batteries attached to either side of the car door. In addition to better weight distribution, nobody should touch both (400V) at the same time. Furthermore, i can eject the doors in case of fire.To stop a car theif, use kV.
How about 200V 10A, 20A or 30A?
To drive the car too. 200V is much safer to carry it around.Use an inverter.
On Saturday, May 7, 2022 at 3:04:51 PM UTC-7, Commander Kinsey wrote:with repeated fast charging.
On Sat, 07 May 2022 22:47:06 +0100, Ed Lee <edward....@gmail.com> wrote:
On Saturday, May 7, 2022 at 2:35:26 PM UTC-7, Commander Kinsey wrote:
On Sat, 07 May 2022 19:56:42 +0100, Ed Lee <edward....@gmail.com> wrote: >> >>
On Saturday, May 7, 2022 at 11:45:21 AM UTC-7, Commander Kinsey wrote: >> >> >> On Sat, 07 May 2022 19:01:35 +0100, Ed Lee <edward....@gmail.com> wrote:Use an inverter.
I plan to have banks of 200V batteries attached to either side of the car door. In addition to better weight distribution, nobody should touch both (400V) at the same time. Furthermore, i can eject the doors in case of fire.To stop a car theif, use kV.
How about 200V 10A, 20A or 30A?
To drive the car too. 200V is much safer to carry it around.
It's more efficient that way. The batteries are charged off the vehicle, and load/unload in parallel with the main, without the need to charge/discharge the energy from the main. It would also keep the main batteries cooler, which is a real problem
Ah, an electric car? But could someone not steal the batteries from there?
Only if they know what's inside. The doors are internally double locked. The windows are unbreakable lexan. The back (with the battery) is physically isolated from the front. I'll probably change the left rear window to metal with loading tubes.
There were several break-in attempts, but i have not lose much stuffs except for the first time.
On Sat, 07 May 2022 23:29:58 +0100, Ed Lee <edward....@gmail.com> wrote:problem with repeated fast charging.
On Saturday, May 7, 2022 at 3:04:51 PM UTC-7, Commander Kinsey wrote:
On Sat, 07 May 2022 22:47:06 +0100, Ed Lee <edward....@gmail.com> wrote: >>
On Saturday, May 7, 2022 at 2:35:26 PM UTC-7, Commander Kinsey wrote: >> >> On Sat, 07 May 2022 19:56:42 +0100, Ed Lee <edward....@gmail.com> wrote:
On Saturday, May 7, 2022 at 11:45:21 AM UTC-7, Commander Kinsey wrote:Use an inverter.
On Sat, 07 May 2022 19:01:35 +0100, Ed Lee <edward....@gmail.com> wrote:
I plan to have banks of 200V batteries attached to either side of the car door. In addition to better weight distribution, nobody should touch both (400V) at the same time. Furthermore, i can eject the doors in case of fire.To stop a car theif, use kV.
How about 200V 10A, 20A or 30A?
To drive the car too. 200V is much safer to carry it around.
It's more efficient that way. The batteries are charged off the vehicle, and load/unload in parallel with the main, without the need to charge/discharge the energy from the main. It would also keep the main batteries cooler, which is a real
Ah, an electric car? But could someone not steal the batteries from there?
Only if they know what's inside. The doors are internally double locked. The windows are unbreakable lexan. The back (with the battery) is physically isolated from the front. I'll probably change the left rear window to metal with loading tubes.
There were several break-in attempts, but i have not lose much stuffs except for the first time.Is this a car or a tank?
The mains one is just a 240V to 2000V transformer directly connected
to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
They are potentially. But the safety interlocks are quite good to stop
humans whilst still allowing flies and insects free access.
A stately home come country house hotel was seriously damaged by an
accumulation of dead flies in such a device a couple of years back.
You can smell burning insect it it gets a particularly big moth. UV
fluoro light trap and HT bars - looks to me like a neon driver
transformer soa couple of mA at a fairly high voltage.
https://www.bbc.co.uk/news/uk-england-tees-29702125
We have them in our VH. Emptying the dead fly trays was moved up the
important routine checks list after that fire.
I empty mine twice a year, whether it needs it or not.
On 5/7/2022 12:42 PM, Commander Kinsey wrote:
The mains one is just a 240V to 2000V transformer directly connected >>>>> to the rails.
That sounds lethal to bugs and to humans. And a fire hazard.
They are potentially. But the safety interlocks are quite good to stop
humans whilst still allowing flies and insects free access.
A stately home come country house hotel was seriously damaged by an
accumulation of dead flies in such a device a couple of years back.
You can smell burning insect it it gets a particularly big moth. UV
fluoro light trap and HT bars - looks to me like a neon driver
transformer soa couple of mA at a fairly high voltage.
https://www.bbc.co.uk/news/uk-england-tees-29702125
We have them in our VH. Emptying the dead fly trays was moved up the
important routine checks list after that fire.
I empty mine twice a year, whether it needs it or not.
BTW Dr. Frankenstein most states often have animal cruelty laws that if interpreted from an "originalist" POV apply even to insects.
That is to say you can vaporize an insect or let it go but if you hook
USB probes up to them while administering shocks on the regular someone
may at some point want to see a license for that, lol
On Saturday, May 7, 2022 at 4:24:56 PM UTC-7, Commander Kinsey wrote:problem with repeated fast charging.
On Sat, 07 May 2022 23:29:58 +0100, Ed Lee <edward....@gmail.com> wrote:
On Saturday, May 7, 2022 at 3:04:51 PM UTC-7, Commander Kinsey wrote:
On Sat, 07 May 2022 22:47:06 +0100, Ed Lee <edward....@gmail.com> wrote: >> >>
On Saturday, May 7, 2022 at 2:35:26 PM UTC-7, Commander Kinsey wrote: >> >> >> On Sat, 07 May 2022 19:56:42 +0100, Ed Lee <edward....@gmail.com> wrote:
On Saturday, May 7, 2022 at 11:45:21 AM UTC-7, Commander Kinsey wrote:Use an inverter.
On Sat, 07 May 2022 19:01:35 +0100, Ed Lee <edward....@gmail.com> wrote:
I plan to have banks of 200V batteries attached to either side of the car door. In addition to better weight distribution, nobody should touch both (400V) at the same time. Furthermore, i can eject the doors in case of fire.To stop a car theif, use kV.
How about 200V 10A, 20A or 30A?
To drive the car too. 200V is much safer to carry it around.
It's more efficient that way. The batteries are charged off the vehicle, and load/unload in parallel with the main, without the need to charge/discharge the energy from the main. It would also keep the main batteries cooler, which is a real
Is this a car or a tank?Ah, an electric car? But could someone not steal the batteries from there?
Only if they know what's inside. The doors are internally double locked. The windows are unbreakable lexan. The back (with the battery) is physically isolated from the front. I'll probably change the left rear window to metal with loading tubes.
There were several break-in attempts, but i have not lose much stuffs except for the first time.
Urban tank that looks like a car.
On Sun, 08 May 2022 01:08:19 +0100, Ed Lee <edward....@gmail.com> wrote:problem with repeated fast charging.
On Saturday, May 7, 2022 at 4:24:56 PM UTC-7, Commander Kinsey wrote:
On Sat, 07 May 2022 23:29:58 +0100, Ed Lee <edward....@gmail.com> wrote: >>
On Saturday, May 7, 2022 at 3:04:51 PM UTC-7, Commander Kinsey wrote: >> >> On Sat, 07 May 2022 22:47:06 +0100, Ed Lee <edward....@gmail.com> wrote:
On Saturday, May 7, 2022 at 2:35:26 PM UTC-7, Commander Kinsey wrote:
On Sat, 07 May 2022 19:56:42 +0100, Ed Lee <edward....@gmail.com> wrote:
On Saturday, May 7, 2022 at 11:45:21 AM UTC-7, Commander Kinsey wrote:Use an inverter.
On Sat, 07 May 2022 19:01:35 +0100, Ed Lee <edward....@gmail.com> wrote:
I plan to have banks of 200V batteries attached to either side of the car door. In addition to better weight distribution, nobody should touch both (400V) at the same time. Furthermore, i can eject the doors in case of fire.To stop a car theif, use kV.
How about 200V 10A, 20A or 30A?
To drive the car too. 200V is much safer to carry it around.
It's more efficient that way. The batteries are charged off the vehicle, and load/unload in parallel with the main, without the need to charge/discharge the energy from the main. It would also keep the main batteries cooler, which is a real
Is this a car or a tank?Ah, an electric car? But could someone not steal the batteries from there?
Only if they know what's inside. The doors are internally double locked. The windows are unbreakable lexan. The back (with the battery) is physically isolated from the front. I'll probably change the left rear window to metal with loading tubes.
There were several break-in attempts, but i have not lose much stuffs except for the first time.
Urban tank that looks like a car.Ah, so what yanks call a truck. Just a car. A truck weighs 50 tonnes.
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