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[Others] How to trigger a low volt relay coil from 120VAC?

I have a 120VAC system that, when it switches on, needs to power a 5v board for a subsystem, such as a common shield relay. Ideally it should isolate both systems, I looked for an optoisolator 120v-&g...
  • answered Jul 30,2020
    by Joson
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1 PCBWay Team 10
2 Marcell Feher 2
3 Engineer 1
4 Brandon Weatherly 1
5 Rayan Bayan 1