Full-Wave Rectifier circuit

Posted on Feb 6, 2014

A circuit that uses both positive and negative alternations in an alternating current to produce direct current. There are two types of Full-Wave Rectifier circuits; one that only uses two diodes but requires a center tapped transformer [shown below], and one that uses four diodes and does not require a center tapped transformer; The schematic shows the direction of current flow during each cycle of the alternating AC waveform.

Full-Wave Rectifier circuit
Click here to download the full size of the above Circuit.

The positive cycle of the AC input flows through CR2, while the negative AC cycle flows through CR1. The DC output voltage is shown for both AC cycles, as is the combination of the combined cycles. This schematic shows the same 2-diode rectifier using an LC Choke. The inductor of the filter attempts to keep the current constant while the capacitor attempts to keep the output voltage steady.

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