A half-wave rectifier is a simple circuit that converts alternating current (AC) into pulsating direct current (DC) using a single diode. In this configuration, the AC input is applied through a transformer or directly to the diode. During the positive half-cycle of the AC signal, the diode becomes forward biased and conducts, allowing current to pass through the load. During the negative half-cycle, the diode is reverse biased and blocks current, resulting in no output. The output is therefore a series of positive pulses. Half-wave rectifiers are basic and inexpensive but produce a less smooth DC compared to full-wave rectifiers.
