**This post tells about the single-phase half-wave rectifier, it waveforms and characteristics. A single-phase half-wave rectifier circuit is depicted below. This rectifier has a resistive load. This rectifier is the simplest form of diode single-phase rectifiers.**

Figure 1. Single-phase half-wave rectifier circuit.

During the positive part the sinus signal diode conducts, during the negative part the sinus signal diode stops conducting. Let’s assume that the voltage transformer is ${v}_{T}={v}_{max}\mathrm{sin}\left(\omega t\right)$, and the resistor voltage and resistance are ${v}_{R}$ and $R$, diode voltage is ${v}_{d}$. Then the wave forms for the diode are the following:

Figure 2. Voltage and current for the diode of the single-phase half-wave rectifier.

The resulting voltage and current of single-phase half-wave rectifier is ${v}_{DC}=\frac{1}{T}{\int}_{0}^{T}{v}_{max}\mathrm{sin}\omega tdt=0.318{v}_{max}$, $\frac{{v}_{DC}}{R}={I}_{DC}$.

**Digi-Key Electronics**offers a great selection of single-phase half-wave rectifiers.