Unit I Semiconductor diode
Theory of PN junction diode, Band structure of open circuited PN junction, Volt
Ampere Characteristics, Temperature Dependence of PN diode, LED, LCD and Photo- diodes, Tunnel diode,
Zener diode as Voltage Regulator.
Unit II Transistors
, Characteristics and Biasing Transistor, Types of Transistor, Transistor current
components, Transistor as an Amplifier, Transistor characteristics in CB, CE and CC modes. Operating point, bias
stability, various biasing circuits, stabilization against Ico, VBE and beta, Construction, Characteristics &
applications of Junction Field Effect Transistor (JFET), UJT and MOSFET.
Unit III Large Signal Amplifiers:
Class A direct coupled with resistive load, Transformer coupled with
resistive load, harmonic distortion, variation of output power with load, Push-Pull Amplifiers, operation of
class- B push-pull amplifier, crossover distortion, transistor phase inverter, complementary- symmetry
amplifier.
Unit IV Feedback Amplifiers and Oscillator:
Feedback Concept, Effect of negative feedback on gain,
bandwidth, stability, distortion and frequency Response, Sinusoidal Oscillators, Sinusoidal oscillators; criterion
for oscillation, Different types of oscillators: RC Phase Shift, Wein Bridge, Hartley, Colpitts and Crystal
Oscillators. Derivation of expression for frequency and amplitude of these oscillators.
Unit V Low & High Frequency Transistor Model:
Transistor Hybrid Model, h parameter equivalent circuit
of transistor, Analysis of transistor amplifier using h-parameters in CB, CE and CC configuration, The high
frequency T model, hybrid pi CE transistor model, hybrid pi conductance in terms of low frequency h
parameters.