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Op-amp calibration problem

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imranahmed

imranahmed

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Please let me know that about calibration of opamp,

I am designing Current Transformer operated ATmega8 based Ammeter.
But the problem is occured, I used 40m-ohm resistor for 60/5A CT
the output voltage when 5A is 200mV ,how to convert exactly for ATmega8 10-bit ADC.

Can anyone interested to tell me?
 

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