Diode is two-terminal semiconductor devices with a p-n junction or an alternative junction.
They are classified into rectifier diodes, zener diodes, etc, by structure and usage.
Symbols of diodes:-
There are several types of diodes are available for use in electronics design, namely; a Backward diode, BARITT diode, Gunn Diode, Laser diode, Light emitting diodes, Photodiode, PIN diode, PN Junction, Schottky diodes, Step recovery diode, Tunnel diode, Varactor diode and a Zener diode.
