Dilan Amarasinghe wrote:

> Hi, every body,
>
> I'm in the stage of developing some power controllers. I want to convert 3
> phase, 400V supply to manageble levels. It should be able to be fed into a
> A/D channel of a PIC16F877.
>
> In the process got it to 20VAC. Rectification and filtering would make it
> DC. I need an idea as to how to get the values down to 0 ~ 1.25V or 0 ~
> 5.0V range. Stable and Linear operation is highly regarded.

How abut a simple 6:1 resistor divider?
(20 VAC rectified will be almost 30 volts DC.)
50K and 10K.

>
>
> Best Regards
>
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  |  __O    Thomas C. Sefranek   tcs@cmcorp.com
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