This document discusses diodes, including their basic concepts, circuit models, applications, and types. It begins by defining a diode as a semiconductor device that only allows current to flow in one direction. Diodes are made from silicon, germanium, or gallium arsenide. The document then examines the ideal diode model and two improved models that include a barrier potential and forward resistance. It explores applications of diodes in various circuits and different types of diodes like Zener diodes and light-emitting diodes. In conclusion, the document summarizes key aspects of diodes and their uses.

1. Diode and their Applications
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2. AGENDA
 Introduction to the Basic concepts of
Diodes
- Whats a diode?
- What are diodes made out of?
- Diode Circuit Models
 Applications of diodes in various
circuits
 Getting into:
- Types of diodes
- Their uses
 Conclusion
 Bibliography

3. Introduction- Basic Concepts
 Whats a diode?
- Di+Ode
- A semiconductor device with
two terminals allowing the flow
of current in one direction
only.

4. Introduction- Basic Concepts
 What are diodes made
out of?
 Silicon
 Germanium
 GaAs

5. Introduction- Basic Concepts
 What are diodes madeout of?
 Diamond lattice and Zinc Blende
Structure

6. Introduction- Basic Concepts
 Diode Circuit
Models
Lets Browse through the three important diode circuit models

7. The Ideal Diode
Model
The diode is designed to allow current to flow in only one
direction. The perfect diode would be a perfect conductor in
one direction (forward bias) and a perfect insulator in the
other direction (reverse bias). In many situations, using the
ideal diode approximation is acceptable.
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Introduction- Basic Concepts
 Diode Circuit
Models

8. Introduction- Basic Concepts
 Diode Circuit
Models
The Ideal Diode
with Barrier
Potential
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V
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9. Introduction- Basic Concepts
 Diode Circuit
Models
The Ideal Diode with
Barrier Potential & Linear
Forward Resistance
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V RF

10. Applications- Diodes & their uses
 Applications of Diodes in various
Circuits
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11. Getting into- Diodes & their uses
 Types of Diodes and their
applications
A K
Schematic Symbol for a PN
Junction Diode
P n
Representative Structure for a
PN Junction Diode

12. Getting into- Diodes & their uses
 Types of Diodes and their
applications
Schematic Symbol for a Zener
Diode
A K

13. Getting into- Diodes & their uses
 Types of Diodes and their
applications
A K
Schematic Symbol for a Light-
Emitting Diode
The arrows in the LED
representation indicate
emitted light.

14. Getting into- Diodes & their uses
 Types of Diodes and their
applications
A
A
Schematic Symbols for
Photodiodes
K
K

15. Getting into- Diodes & their uses
 Types of Diodes and their
applications

16. Getting into- Diodes & their uses
 Types of Diodes and their
applications

17. Conclusion- Summing up
 Summing up all about diodes…!!!
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18. Bibliography- References
 Thanks to the sources…!!!
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19. THE END…