description
Topics covered: 1. Introduction, band theory, semiconductors, fermi level. 2. Rectifier, half wave and full wave. 3. Special purpose pn junction: LED, LDR, Photodiode, zener diode. 4. Transistor, BJT 5. Energy band diagrams 6. Transistor as amplifier, oscillator. Not covered: Transistor as Switch, pn junction.