Comment on 9 Pole 1 Throw Switch?
partial_accumen@lemmy.world 1 week ago
If I understand what you’re describing, I’d probably use a relay board:
You could wire all of the control circuits to one wire, and with the flip of one switch on the control circuit turn on/off all 10 relays on their load circuits.
nilloc@discuss.tchncs.de 1 week ago
Using the NC side of the relays would be the best way too, but I’m not sure how to find one of these with name brand relays that id actually trust in a commercial setting.
partial_accumen@lemmy.world 1 week ago
I suppose that comes down to “what is the worst case scenario assuming the board fails”. If you simply can’t have it fail the design should have redundancies built in. If you’re looking for build quality/established MTBF ratings then piggyback on top of someone elses regulatory approvals where those tolerances are built in. I just did a quick google search for “relay board FAA approved” not even knowing what the regulatory rules are of aircraft. Apparently those are FAA-PMA and TSO. Plugging that in with “relay board” and you get something like this:
Sandia Aerospace 12 Pole Switching Relay
Image
This level of build quality and certification comes at a much higher price of $524 for one board though.