>----- Original Message -----
>From: "Roberts II, Charles K." <robertsck@ORNL.GOV>
>To: <PICLIST@MITVMA.MIT.EDU>
>Sent: Friday, March 12, 2004 8:29 PM
>Subject: [EE:] Measuring Current in a High Voltage Circuit
>

>Hello All
>
>I am working on a PIC based High Voltage module....

Chuck,

If at all possible, put the current sensing resistor in the negative return
of the power supply. That way you will have a much simpler amplifier / level
shifter circuit, and the whole thing should be safer to work on.

Failing that, I would use an optical isolater to do the 3kV isolation.

All the best...Mike.

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