What is a rectifier ? With suitable circuit describe the action of a full wave rectifier by drawing input and output waveforms.

Explanation

For diagram See S.A.T.Q.-I. 8.For positive half cycle of input a.c., one of the two diodes gets forward biased and conducts and output current is obtained across the load `R_L`, For negative half cycle of input a.c., the other diode gets forward biased and thus output current is obtained due to it. Therefore, output is obtained for both the cycles of input a.c.