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

Explanation

Detailed Answer:
.A. device which converts alternating current a.c. into direct current d.c. is known as rectifier.
The process of converting a.c. in to d.c. is known as rectification.
Working: When a positive half cycle of input a.c. signal flows through the primary coil, induced e.m.f. is set up in the secondary coil due to mutual induction. the direction of induced e.m.f. is such that the upper end of the secondary coil becomes positive while the lower end becomes negative. thus diode `D_(1)`, is forward biased and diode `D_(2)` is reverse biased, so the current due to diode `D_(1)` flows through the circuit in a direction shown by arrows above `(R_(1))`. the output voltage which varies in accordance with. the input half cycle is obtained across the load resistance `(R_(1))`. during negative half cycle of input a.c. signal, diode `D_(1)` is reverse biased and diode `D_(2)` is forward biased. the current due to diode `D_(2)` flows through the circuit in a direction shown by arrows (below `R_(1)`). the output voltage is obtained across the load resistance `(R_(L))_(B)`.