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What is full wave rectification? Explain the working of a full wave rectifier. Indicate the wave forms of input and output voltage. |
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Answer» <P> Solution :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. Duringthe 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))`  
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