Other Components

• Three layers of doped semiconductor (either PNP or NPN) are sandwiched together to form a bipolar transistor
• The layers are called the collector (C), base (B) and emitter (E)
• The B-E junction is forward biased; the C-E is reverse biased
• The transistor can be used as an amplifier or switch

Course Guide Topics

1. Diode
2. Characteristics
3. Uses (1)
4. Uses (2)
5. Diodes
6. Transistor (1)
7. Transistor (2)
8. Field Effect Transistor (FET)
9. Thermionic devices (Valves)
10. Integrated Circuits
11. Transformers
12. Types of transformer
13. Characteristics
14. Sources of Electricity (1)
15. Sources of Electricity (2)
16. Series/Parallel Connection
17. Quartz Crystals (1)
18. Quartz Crystals (2)
19. Crystal Filters