Step down the 115 V through a transformer.

Use precision rectifier to convert the AC to DC and feed to PIC.

You are lucky, you will be able to get HALF volt resolution, where as we
( in INDIA ) are able to get only 1 volt resolution.

Bye

Pailoor



Andres Tarzia wrote:

> I am interested in making an AC volt meter for monitoring the 115V
> power
> line.
> But I don't know how to use the A/D converter, which only accepts DC.
>
> Can someone suggest a technique to do just that?
>
> Thank you.
>
> Regards,
> Andres Tarzia
> Technology Consultant, SMART S.A.
> e-mail: atarzia@smart.com.ar



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