A half-wave rectifier is equivalent to:

Explanation

Option B is correct since a clipper works to remove either the positive or negative half cycles of the input voltage. Since the diode most commonly allows the positive half cycles to pass through and not the negative, it acts as a positive clipper.Option A is incorrect since clamping circuits place the negative and positive peaks of the waveform at the desired DC level. In other words, these circuits shift the input signal by an amount defined by the independent voltage source.Option C is incorrect since a negative clamper circuit is biased with some negative reference voltage, that voltage will be added to the output to raise the clamped level.Option D is incorrect since a positive clamper circuit is one that consists of a diode, a resistor, and a capacitor and that shifts the output signal to the positive portion of the input signal.