Question

Choose the correct option for the relation between the two circuits.

(a) Circuit (a) is a voltage doubler circuit, while Circuit (b) does not double the voltage

(b) Both are similar and double the voltage to 2Vm

(c) Circuit (a) is a doubler circuit with output +2Vm and Circuit (b) is a doubler with output -2Vm

(d) Circuit (a) is a doubler circuit, while Circuit (b) is a clipper

I had been asked this question by my college professor while I was bunking the class.

This interesting question is from Clamper Circuit topic in section Diode Circuit of Analog Circuits

Answer 1

Correct answer is (c) Circuit (a) is a doubler circuit with output +2Vm and Circuit (b) is a doubler with output -2Vm

Explanation: Both circuits are half-wave voltage doublers, in which capacitor C2 charges up to twice the positive (or negative for Circuit (b)) peak for one half of the wave. Neither of the circuits acts as a clipper.