Ehlers Riaan wrote :

> I need to measure the following with a pic-micro controller:
>
>   - DC voltage range from 0Vdc to 230Vdc with at least 1V intervals.
>   - AC voltage range from 0Vac to 440Vrms with at least 1V intervals.

Maybe this might help ? :

http://focus.ti.com/docs/prod/folders/print/iso122.html

"Precision Lowest Cost Isolation Amplifier"

Best Regards
Jan-Erik.

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