Created by
Created July 24, 2013
Last modified July 24, 2013
Tags adc   ammeter   arduino   current-transformer  


The circuit to interface a current transformer to an Arduino analog input pin.

The burden resistor needs to be chosen based on the specifications of the CT and the expected amperage range for measurement.

R2 and the two zener diodes protect the controller from out-of-range input. Circuitlab doesn't "stock" them, but they're 1N5221Bs.


Not provided.


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