Draw the symbols of following diodes:

i) Varactor diode,

ii) Schottky diode,

iii) p-i-n diode

iv) Tunnel diode

Explain the origin of negative resistance in Gunn diode with the help of appropriate E-k diagram. What are the applications of Gunn diode?

1. Symbols of Diodes:

i) Varactor diode:  
A varactor diode is represented as a symbol with a triangle pointing towards a vertical line, with two opposite arcs (representing the junction) placed near the triangle on both sides, and a reverse polarity marking on the junction.

ii) Schottky diode:  
The Schottky diode symbol looks like a standard diode symbol but with a "metal-semiconductor" junction, which is represented by a vertical line next to the triangle with a "circle" or "dot" at the end of the line (indicating the metal contact).

iii) p-i-n diode:  
The p-i-n diode symbol ______ _____ __________ ________ ___.
______ __________ ___ _____ ___ ___.
___ ___ _________ ____ ____ _______ ______ ____ _________.
______ ____ _______ ________ _______ ____ ____ __________ ______ _________.
________ ___ _______ _____ __________ ____.
________ ___ __________ ____ ___ ______ _____ ____.
_______ ____ ____ ________ ________ ______ ____.
__________ ________ ___ __________ ________ __________ _______ ________ ________ _________ ________.
__________ _______ _____ __________ ____ ____ _____ __________ _________ __________.
______ _______ _________ _____ ______ ________ ______ _______.
________ _________ _________ ________ ______.
_____ _____ ___ ________ ____.
____ __________ ___ ________ _____ _____ ________ _______ __________ ___.
_______ _____ ____ ________ ____ _______.
_______ __________ __________ ____ ______ ____ ________.
_____ _______ ___ ____ ___ ________ ___.
__________ ____ ______ _____ _____ _______.
_____ ____ _____ __________ _______ ____ _________ __________ ________.
__________ ______ ________ _______ ______.
___ _______ ________ ________ ______ __________ ______ __________ ___.
_________ ________ _______ ______ __________ _______ _____.
__________ __________ ______ ________ _______ ________ _____ __________.
___ _____ _________ ________ ________ ______ ______ __________ _____ ____ ______.
________ ___ __________ __________ ________ __________.
___ __________ _____ ____ ______ _____ ________ _____ ____ _____.
_____ __________ ________ ______ _____.
______ _____ _____ _________ __________ _________ ______ ________ ______ ________ ________.
_____ _____ _________ _________ ________ ____ _______.
____ ________ ____ __________ _________ ________ ____.
_________ ________ ______ __________ ___ ______ _____ ________ _______ ______.
___ _______ ______ ______ ________ _________ _________ __________ ________.
______ ____ _____ ________ __________ __________ _______ ___.
________ ______ __________ ______ ________ ___ ____ ____ _________.
___ __________ ______ ________ _________ ______ _________ __________ _____ _____.
_________ ___ _____ ____ ________ ___ _____ _________ _______.
_____ ____ ____ _____ _____.
__________ _________ _______ ____ ______ ____ ______ ______ ________ _______ ______ ______.
_____ _________ ____ __________ ____ ___ ___ ____ _________.
____ _________ _________ ___ _______ _________.
Get Full Answer on WhatsApp