Half Wave Rectifier Waveform. To understand the operation of a half wave rectifier perfectly you must know the theory part really well. The dc current is unidirectional but the dc voltage may have either polarity.
A half wave rectifier is defined as a type of rectifier that only allows one half cycle of an ac voltage waveform to pass blocking the other half cycle. And a diode works and allows current in only one direction and blocks it in another one. Half wave controlled rectifiers controlled rectifiers or converters as they are generally called are broadly classified into full controlled and half controlled types.
As show in above diagram half wave rectifier have one pn junction diode.
Half wave rectifiers are used to convert ac voltage to dc voltage and only require a single diode to construct. Working of half wave rectifier. However look at the input waveform and output waveform. Firstly one pn junction diode and secondly one load resister.