Forrest Christian wrote:
> I'm struggling with coming up with a circuit which I actually like for=20
> measuring AC line voltage and current.   The goal is to be able to read=20
> the voltage of AC line within a volt or two within a microchip PIC....  =
=20
> For obvious reasons I'd like something where in normal operation the AC=20
> line is isolated from the PIC side of the circuit.
>  =20

Neon and a photo transistor? Should work at about 200uA on  mains side?
Voltage varies the current thus brightness due to large series resistor.=20
Better suited maybe to 230V AC than 110V AC.

Hall effect sensor to measure line current.


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