The document provides an overview of diodes, describing their definition, construction, and operation under different bias conditions. It covers various types of diodes such as LED, Zener, and photodiodes, along with their applications and the I-V characteristic curve. The discussion emphasizes the importance of biasing and how it impacts diode performance in electronic circuits.

1. Diodes
Presented by Atheena Pandian

2. Content
Summary
Discussion Overview
What is Diode?
Electronic Symbol
Construction of Diode
Depletion Region and Junction
Volatage
Reverse bias and Forward Bias
Types of Diodes
I-V Characteristic Curve
Application of Diode
1.
2.
3.
4.
5.
6.
7.
8.

3. What is
diode?
A diode is an
electrical component desi
gned to conduct electric
current in only one
direction.
It has two ends (or
terminals), each with an
electrode of a different
charge.

4. Symbol
DIODE

5. A diode is
formed by
joining two
equivalently
doped P-Type
and N-Type
semiconductor.
Constuction

6. Biasing
Biasing in electronics means establishing
predetermined voltages or currents at
various points of an electronic circuit for
the purpose of establishing proper
operating conditions in electronic
components.
Forward Biasing
Reverse Biasing
1.
2.

7. Forward and
Reverse Bias

8. FORWARD BIAS

9. REVERSE BIAS

10. FORWARD AND REVERSE
BIAS
Forward biasing means
putting a voltage across a
diode that allows current to
flow easily, while reverse
biasing means putting
a voltage across a diode in the
opposite direction.

11. V-I Charecteristics
Using V-I
characteristics
of the diode, it
is easy to find
the voltage
and current in
the circuit
which
contains
the diode.

12. VARIOUS
DIODES
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.

13. VARIOUS DIODES

14. Application of Diodes
Power Diode

15. Application of Diodes
Signal Diode

16. Application of Diodes
Zerner Diode

17. Application of Diodes
Light Emitting Diode (LED)

18. Application of Diodes
Tunnel Diode

19. Application of Diodes
Varactor Diode

20. Application of Diodes
Photo Diode

21. Application of Diodes
Laser Diode

22. Thank You