The ripple frequency produced by a half-wave power supply connected to a normal household circuit is:

A half-wave rectifier works by allowing only one half of the incoming alternating current (AC) cycle to pass while blocking the other half. Because of this, it produces exactly one pulse of direct current (DC) for every full AC cycle. In North America, standard household AC power operates at a frequency of 60 Hz. Since the half-wave rectifier outputs one pulse per cycle, the resulting ripple frequency is exactly the same as the input frequency, which is 60 Hz. By contrast, a full-wave rectifier flips the negative half of the cycle into a positive pulse, producing two pulses per AC cycle and resulting in a 120 Hz ripple. Therefore, options suggesting 120 Hz are incorrect for a half-wave supply.