• How much electricity do these things use when not in use?

    From micky@21:1/5 to All on Sun Mar 28 02:13:16 2021
    XPost: sci.electronics.repair, alt.home.repair

    I'd appreciate it any replies went to all three groups that this is
    posted to so I don't have to read all three to see all the replies.
    When I started in Usenet, that was considered the proper way.


    How much electricity do these things use when not in use?

    1) Laptop power supplies, when the laptop is not on? Is it different
    when the laptop is disconnected?

    2) Automobile Quick Charge 3.0 ports? My car is old so I have to add
    one, like this one, https://www.amazon.com/gp/product/B088HJPK7C/ref=ox_sc_act_title_1?smid=A3IBRCMNGJUPVG&psc=1
    Some come with a switch in them and some don't. I picked this one
    'cause it has a 1.1" hole saw, not for the switch. I suppose some new
    cars come with QC 3.0 installed?

    3) Radios, that have an on/off switch but the switch is not in the 110v.
    line. It's somewhere in the transistor circuitry, after the radio's
    power supply? Why don't they put the switch on the 110 volts?

    4) Same question about TV's but since they are bigger, do they waste
    even more? If they have to use a relay, they could use a relay. (Yes,
    I agree that the remote control receiver has to be on all the time, but
    I don't consider that a waste. It could be the only part that is on.)

    5) What have I left out? Especially something that is different in
    nature from the previous 4.


    WRT 1, I've noticed that the black box that's part of the charging cable
    is not hot, not even warm afaict, when I'm not charging anything. Does
    that imply I'm not using much current? That I'm using no current?

    WRT 2, cars, doesn't the alternator put out loads of extra electricity
    anyhow except that there is a regulator to stop that. If the charger I'm
    asking about or the lights or any accesorry (even maybe the heater fan)
    is using electricity, does it make the engine work harder? Is the
    amount significant? How many gallons an hour do all the accesories
    together use?
    Is the amount the engine would have to work to power a charger
    that's not charging anything even measurable with other than a
    galvanometer**?
    ** wikip doesn't say this but I was led to believe a galvanometer
    is an ammeter for very small currents. Was that true? Is it still?
    Anyhow, that's what I mean in the previous paragraph.

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  • From Rod Speed@21:1/5 to micky on Sun Mar 28 17:31:12 2021
    XPost: sci.electronics.repair, alt.home.repair

    micky <NONONOmisc07@fmguy.com> wrote

    I'd appreciate it any replies went to all three groups that this is
    posted to so I don't have to read all three to see all the replies.
    When I started in Usenet, that was considered the proper way.


    How much electricity do these things use when not in use?

    1) Laptop power supplies, when the laptop is not on?

    What the battery needs charging wise.

    Is it different when the laptop is disconnected?

    Yes, very little power is taken with a modern
    very small switching power supply/charger.

    2) Automobile Quick Charge 3.0 ports?
    My car is old so I have to add one, like this one, https://www.amazon.com/gp/product/B088HJPK7C/ref=ox_sc_act_title_1?smid=A3IBRCMNGJUPVG&psc=1

    Same as the laptop.

    Some come with a switch in them and some don't. I picked
    this one 'cause it has a 1.1" hole saw, not for the switch. I
    suppose some new cars come with QC 3.0 installed?

    3) Radios, that have an on/off switch but the switch is
    not in the 110v. line. It's somewhere in the transistor
    circuitry, after the radio's power supply?

    It doesn't actually switch anything, it tells the radio to turn off.

    How much power it takes when off varys with the design.

    Why don't they put the switch on the 110 volts?

    Because the other switch is cheaper.

    4) Same question about TV's but since
    they are bigger, do they waste even more?

    Yep, the worst designs can be quite bad.

    If they have to use a relay, they could use a relay. (Yes, I agree
    that the remote control receiver has to be on all the time, but
    I don't consider that a waste. It could be the only part that is on.)

    Yes with the best designs. But some of the smart ones
    allow the firmware to be remotely updated so that
    still needs to be active to know when to do that.

    5) What have I left out?

    Everything appliance wise except the most primitive now.

    Especially something that is different in nature from the previous 4.

    You can get power meters very cheaply.

    WRT 1, I've noticed that the black box that's part of the charging
    cable is not hot, not even warm afaict, when I'm not charging
    anything. Does that imply I'm not using much current?

    Yes.

    That I'm using no current?

    Nope, its never literally zero.

    WRT 2, cars, doesn't the alternator put out loads of extra
    electricity anyhow except that there is a regulator to stop that.

    There always is a regulator.

    If the charger I'm asking about or the lights or any
    accesorry (even maybe the heater fan) is using
    electricity, does it make the engine work harder?

    Yep. But it isnt a fan heater in car.

    Is the amount significant?

    Nope.

    How many gallons an hour do all the accesories together use?

    Bugger all.

    Is the amount the engine would have to work to power
    a charger that's not charging anything even measurable
    with other than a galvanometer**?

    It is measurable with a power meter.

    ** wikip doesn't say this but I was led to believe a galvanometer
    is an ammeter for very small currents. Was that true?

    Yes.

    Is it still?

    Nope, we do it electronically now.

    Anyhow, that's what I mean in the previous paragraph.

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  • From Adrian Caspersz@21:1/5 to micky on Sun Mar 28 10:37:34 2021
    XPost: sci.electronics.repair, alt.home.repair

    On 28/03/2021 06:13, micky wrote:

    I'd appreciate it any replies went to all three groups that this is
    posted to so I don't have to read all three to see all the replies.
    When I started in Usenet, that was considered the proper way.


    Yup - and *much* preference to multiposting. Cross-posting to completely different or trophy groups was the annoyance, mostly done by trolls.


    How much electricity do these things use when not in use?

    It's less than the electricity used when they are in use ;-)

    However less - this depends on age, construction, type, and how much
    power/cost you believe is significant.

    Find yourself an AC plugin power meter and measure?

    There are other metering methods for non-AC classes of equipment, a
    clamp meter is a non-invasive measurer of current (and them hall-types
    that also measure DC current are pretty useful in cars).

    --
    Adrian C

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  • From Jeff Liebermann@21:1/5 to All on Sun Mar 28 10:29:10 2021
    XPost: sci.electronics.repair, alt.home.repair

    On Sun, 28 Mar 2021 01:13:16 -0400, micky <NONONOmisc07@fmguy.com>
    wrote:

    How much electricity do these things use when not in use?

    1) Laptop power supplies, when the laptop is not on? Is it different
    when the laptop is disconnected?

    Using my P4460 Kill-a-watt meter, I tried a mixed collection of
    laptops and power supplies. Since the laptop is charging the battery
    while it is turned off, and I didn't want to wait for the battery to
    come to full charge, I simply removed the battery where possible:

    Acer Chromebook 14
    PS only 0 watts
    PS with laptop turned off 0 watts

    HP Pavilion dv8263dl
    PS only 0 watts
    PS with laptop turned off 3 watts

    HP Pavilion dv6-1253cl
    PS only 0 watts
    PS with laptop turned off 0 watts


    2) Automobile Quick Charge 3.0 ports? My car is old so I have to add
    one, like this one, >https://www.amazon.com/gp/product/B088HJPK7C/ref=ox_sc_act_title_1?smid=A3IBRCMNGJUPVG&psc=1
    Some come with a switch in them and some don't. I picked this one
    'cause it has a 1.1" hole saw, not for the switch. I suppose some new
    cars come with QC 3.0 installed?

    3) Radios, that have an on/off switch but the switch is not in the 110v. >line. It's somewhere in the transistor circuitry, after the radio's
    power supply? Why don't they put the switch on the 110 volts?

    4) Same question about TV's but since they are bigger, do they waste
    even more? If they have to use a relay, they could use a relay. (Yes,
    I agree that the remote control receiver has to be on all the time, but
    I don't consider that a waste. It could be the only part that is on.)

    5) What have I left out? Especially something that is different in
    nature from the previous 4.


    WRT 1, I've noticed that the black box that's part of the charging cable
    is not hot, not even warm afaict, when I'm not charging anything. Does
    that imply I'm not using much current? That I'm using no current?

    WRT 2, cars, doesn't the alternator put out loads of extra electricity
    anyhow except that there is a regulator to stop that. If the charger I'm >asking about or the lights or any accesorry (even maybe the heater fan)
    is using electricity, does it make the engine work harder? Is the
    amount significant? How many gallons an hour do all the accesories
    together use?
    Is the amount the engine would have to work to power a charger
    that's not charging anything even measurable with other than a >galvanometer**?
    ** wikip doesn't say this but I was led to believe a galvanometer
    is an ammeter for very small currents. Was that true? Is it still?
    Anyhow, that's what I mean in the previous paragraph.
    --
    Jeff Liebermann jeffl@cruzio.com
    PO Box 272 http://www.LearnByDestroying.com
    Ben Lomond CA 95005-0272
    Skype: JeffLiebermann AE6KS 831-336-2558

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  • From Tekkie⌐@21:1/5 to All on Wed Mar 31 15:18:14 2021
    XPost: sci.electronics.repair, alt.home.repair

    On Sun, 28 Mar 2021 01:13:16 -0400, micky posted for all of us to digest...


    I'd appreciate it any replies went to all three groups that this is
    posted to so I don't have to read all three to see all the replies.
    When I started in Usenet, that was considered the proper way.


    No, it wasn't.

    --
    Tekkie

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)