I put all the relays that would fit on the board.
https://www.dropbox.com/scl/fo/pz4axx3pmyl3a6fmyef8e/AOP8q-Z_KeMtiv8TgslL9CQ?rlkey=imu35x1qvt9j8j29if1b1vgm5&dl=0
The blue wires were my mistake. I put test points on both ends of two
signals on separate schematic sheets, and somehow that let it pass a >connectivity check. On the other hand, the test points make the
jumpering work nicely.
So far, that's all that seems to be wrong.
It's our FITS cable fault insertion module, for our P940 modular power >system.
On a sunny day (Fri, 06 Dec 2024 13:50:40 -0800) it happened john larkin ><jl@glen--canyon.com> wrote in <geq6ljdsa24e3kg8k1tk0p2hkvlcn7bnct@4ax.com>:
I put all the relays that would fit on the board.
https://www.dropbox.com/scl/fo/pz4axx3pmyl3a6fmyef8e/AOP8q-Z_KeMtiv8TgslL9CQ?rlkey=imu35x1qvt9j8j29if1b1vgm5&dl=0
The blue wires were my mistake. I put test points on both ends of two >>signals on separate schematic sheets, and somehow that let it pass a >>connectivity check. On the other hand, the test points make the
jumpering work nicely.
So far, that's all that seems to be wrong.
It's our FITS cable fault insertion module, for our P940 modular power >>system.
What happens when they no longer make those relais and you have to replace once?
On Sat, 07 Dec 2024 06:06:01 GMT, Jan Panteltje <alien@comet.invalid>
wrote:
On a sunny day (Fri, 06 Dec 2024 13:50:40 -0800) it happened john larkin
<jl@glen--canyon.com> wrote in <geq6ljdsa24e3kg8k1tk0p2hkvlcn7bnct@4ax.com>:
We spell it "relays" here in the developed world.
Is there anything else you think we did wrong?
On Sat, 07 Dec 2024 06:06:01 GMT, Jan Panteltje <alien@comet.invalid>
wrote:
On a sunny day (Fri, 06 Dec 2024 13:50:40 -0800) it happened john larkin >><jl@glen--canyon.com> wrote in <geq6ljdsa24e3kg8k1tk0p2hkvlcn7bnct@4ax.com>: >>
I put all the relays that would fit on the board.
https://www.dropbox.com/scl/fo/pz4axx3pmyl3a6fmyef8e/AOP8q-Z_KeMtiv8TgslL9CQ?rlkey=imu35x1qvt9j8j29if1b1vgm5&dl=0
The blue wires were my mistake. I put test points on both ends of two >>>signals on separate schematic sheets, and somehow that let it pass a >>>connectivity check. On the other hand, the test points make the
jumpering work nicely.
So far, that's all that seems to be wrong.
It's our FITS cable fault insertion module, for our P940 modular power >>>system.
What happens when they no longer make those relais and you have to replace once?
Certainly we considered that. Several people make the big black ones
and the small white ones and the SSRs. All are industry standards.
Some don't wash well in production, but there are workarounds for
that.
The poyfuses and some software protections are there to protect the
relay contacts and current shunts and stuff. We specify max voltages
and currents, but you never know if a customer will respect that.
We drop the coil voltages from 12 to 8 when we're not transitioning,
to keep the relays a bit cooler. There is guaranteed air flow too.
We spell it "relays" here in the developed world.
The Efinix FPGA is cheap, about $10, so we could buy a zillion if it
goes EOL.
As one might imagine, the PCB layout was tough on that one.
Is there anything else you think we did wrong?
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