What is full wave rectification? Explain the working of a full wave rectifier. Indicate the wave forms of input and output voltage.

Explanation

Full wave rectification: The process in which both the halves of a.c. are rectified to obtain a pulsating direct current is known as full wave rectification.
A transformer with a centre tap is used for a full wave rectification. Input contains ac. A minimum of two diode are used at the secondary of the transformer. A load resistor is connected between the junction of the N type semiconductor and the centre tap.
During the first half cycle, diode `D_(1)` will be forward biased and `D_(2)` will be reverse biased so that the current flows from B to centre tap.
During the second half cycle, diode, `D_(2)` will be forward biased while `D_(1)` will be reverse biased.
The current once again takes the same direction from B to centre tap. The I/P and the O/P
Waveforms are shown in fig. the average DC is `2((V_(p))/(pi))`