Full-wave rectifier
A fully rectified sine wave is the modulus of the sine wave. The circuit for a full-wave rectifier is shown in Figure 2.44 together with the input and output waveforms. The input signal is v_{in} and the output signal is v_0. Ignoring the voltage drops across the diodes gives
v_{\mathrm{o}}=\left|v_{\text {in }}\right|