Diode - Diode is a component use in all electronics circuits. It has two leads named as cathode and anode.It conducts electric current only in one direction that is from anode to cathode.This property of diode make it suitable for use as a rectifier. A rectifier mean a circuit which converts ac current to dc current.All electronics devices and equipment work on dc supply.
   There are  three type of rectification circuit
1. Half wave rectifier
2. Full wave rectifier
3. Bridge rectifier