Half Wave Rectifier: The half wave rectifier is a type of rectifier that rectifies only half cycle of the waveform. Half Wave Rectifier can be used to obtain the desired level of dc voltage by using Step up or Step down Transformer. For half wave rectifier circuits, be sure to use an op amp with a high slew rate. Current flows in the circuit for all half of the input cycle. Fig-4b: Half-wave Rectifier Negative Cycle. Half Wave Rectifier; Full Wave Rectifier; We will discuss here Full Wave Rectifier. During the positive half cycle, when the secondary winding of the upper end is positive with respect to the lower end, the diode is under forwarding bias condition and it … In full wave rectifier, if we consider a simple sinusoidal a.c voltage, both the negative half cycle or the positive half cycle of the signal is allowed to move past the rectifier circuit with one of the halves flipped to the other halve such that we now have two positive or negatives halves following each other at the output. Half Wave and Full Wave Rectifier In Half Wave Rectifier, when the AC supply is applied at the input, a positive half cycle appears across the load, whereas the negative half cycle is suppressed.This can be done by using the semiconductor PN junction diode. The only dissimilarity is half wave rectifier has just one-half cycles (positive or negative) whereas in full wave rectifier has two cycles (positive and negative). So no current is conducted and hence no voltage appears across the load. This article describes the half wave rectifier circuit working. The major disadvantage of half wave rectifier is we get large fluctuations. Negative Cycle: Whereas during negative cycle diode becomes reverse bias and doesn’t allow current to flow towards load. Peak inverse voltage is given as PIV >= V m. If, at any point, PIV