AVR-Chat

On Monday 30 July 2007 01:21, magzky02 wrote:

> I am going to measure the current (0-500mA) on a system. i will be 
> using a current sense resistor, and an op-amp then i use ADC to 
> measure the opm-amp output. But my problem is that the the line is 
> high voltage (70 V).

"Seminar 1200 Topic 1 - Current Sensing Solutions"
http://focus.ti.com/lit/ml/slup114/slup114.pdf

http://focus.ti.com/analog/docs/gencontent.tsp?familyId=57&genContentId=28018

TI INTRODUCES TWO-STAGE CURRENT SENSE MONITORS FOR FILTERED CURRENT SENSING
http://focus.ti.com/docs/pr/pressrelease.jhtml?prelId=sc07083

AN39  Current measurement applications handbook.
http://www.zetex.com/3.0/appnotes/apps/an39.pdf


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