In my house, I have some GFCI breaker plugs with what appear to be indicator LEDs that are on when the circuit is hot.
How could I build a circuit to do the same thing and also give me an isolated TTL level output?
A quick diagram would be most helpful.
Later edit: I should say that I am only interested in the indicator LED here and not in the function of the GFCI.
How could I build a circuit to do the same thing and also give me an isolated TTL level output?
A quick diagram would be most helpful.
Later edit: I should say that I am only interested in the indicator LED here and not in the function of the GFCI.
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