• brickwalled relays

    From john larkin@21:1/5 to All on Fri Dec 6 13:50:40 2024
    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.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to jl@glen--canyon.com on Sat Dec 7 06:06:01 2024
    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?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to All on Sat Dec 7 08:18:48 2024
    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?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Bill Sloman@21:1/5 to john larkin on Sun Dec 8 12:17:09 2024
    On 8/12/2024 3:18 am, john larkin wrote:
    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>:

    <snip>

    We spell it "relays" here in the developed world.

    You mean English-speaking. Jan lives in the Netherlands, which is
    probably more "developed world" than the US. At least it has got
    universal health care. Jan isn't a great advertisement for the Dutch
    universal education system - most speakers of Dutch can spell English
    better than he can, but you aren't a great advertisement for the US
    education system either

    <snip>

    Is there anything else you think we did wrong?

    We can absolve you of voting for Trump - we know that you don't bother
    to vote.

    --
    Bill Sloman, Sydney

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to JL@gct.com on Sun Dec 8 06:05:12 2024
    On a sunny day (Sat, 07 Dec 2024 08:18:48 -0800) it happened john larkin <JL@gct.com> wrote in <ses8ljd91oq73c7svqmfhr78d4cllcdk9v@4ax.com>:

    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.

    Zorry, I jam but a neutral net



    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?

    Use relays?

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