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Are 4N35 optocouplers clamped at 22V?
I am trying to detect mains with an ESP32, for that I started testing this circuit:
I bought a 4N35 optocoupler and 110kΩ resistors.
My first test was using 2 resistors in series, so R1 = 220kΩ.
The ...
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Sense 230V - voltage
Brief sum up (you can go directly to the end if you already read the sum up in the other question)
For a home project I'm making a controller to drive a two-direction 230V motor. For those unfamiliar ...
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