Q. A positive small signal half wave rectifier can

A
Rectify signals with value of few milli volts only
B
Rectify signals with peak value only
C
Rectify signals with both peak value and down to few millivolts
D
None of the mentioned
Solution:

A positive small signal half wave rectifier can rectify signals with peak values down to few milli volts, because the high open loop gain of the op-amp automatically adjusts the voltage drive to the diode, so that the rectified output peak is the same as the input.

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