A microcontroller in another circuit I want to monitor controls a relay. I had thought of using a current switch to detect when the switch had been made, but because it's got a cord and doesn't expose enough of the active wire inside, I won't be able to. However what might work is the other side o…

Relay switch

Grumpy_Mike April 29, 2012, 4:14am 4

It almost certainly will be at or less than 5V - PIC MCU controls it.

I would be surprised if the relay is being directly powered from the PIC chip pins. There is not enough current available.

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