Presenation on Bipolar Junction Transistors

1. Understanding Transistors
• The Heart of Modern Electronics
• Presented by: [Your Name]

2. Introduction to Transistors
• • A semiconductor device used to amplify or
switch signals.
• • Invented in 1947 by John Bardeen, Walter
Brattain, and William Shockley.
• • Building block of modern electronics.

3. Structure of a Transistor
• • Made of semiconductor material
(Silicon/Germanium).
• • Three terminals:
• - Emitter (E)
• - Base (B)
• - Collector (C)

4. Types of Transistors
• 1. Bipolar Junction Transistor (BJT)
• - NPN & PNP types
• 2. Field Effect Transistor (FET)
• - JFET & MOSFET

5. Working of a BJT
• • NPN Transistor: Small base current allows
large collector-emitter current.
• • PNP Transistor: Small base current allows
emitter-collector current.

6. Working of a MOSFET
• • Enhancement & Depletion Mode
• • Acts as a voltage-controlled switch.
• • Used in microprocessors & power
electronics.

7. Applications of Transistors
• • Amplifiers – Radios, TVs, Audio systems.
• • Switches – Digital circuits.
• • Microprocessors – Billions in modern CPUs.
• • Power Electronics – Motor control, power
supplies.

8. Importance of Transistors
• • Miniaturization – Enables compact devices.
• • Efficiency – Improves power management.
• • Innovation – Basis for AI, IoT, and quantum
computing.

9. Future of Transistors
• • Moore’s Law & scaling challenges.
• • Nano-scale Transistors – FinFETs, Quantum
Transistors.
• • Optical Transistors – Ultra-fast computing.

10. Conclusion
• • Transistors revolutionized electronics.
• • Advances continue to shape future tech.
• • Essential for engineers and tech enthusiasts.