high resistance voltmeter circuit diagram

Posted on Feb 7, 2014

A high-input-resistance op-amp, a bridge rectifier, a microammeter, and a few other discrete components are all that are required to realise this versatile circuit. This circuit can be used for measurement of dc, ac rms, ac peak, or ac peak-to-peak voltage by simply changing the value of the resistor connected between the inverting input terminal

high resistance voltmeter circuit diagram
Click here to download the full size of the above Circuit.

of the op-amp and ground. The voltage to be measured is connected to non-inverting input of the op-amp.

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