1. HIGH FREQUENCY TRANSISTOR
The high frequency T model, common base short circuit current frequency response, alpha cutoff
frequency, common emitter short circuit current frequency response, hybrid pi CE transistor
model, hybrid pi conductance in terms of low frequency h parameters, CE short circuit current
gain obtained with hybrid pi model, current gain with resistive load.
2. LARGE SINGAL AMPLIFIERS
Class A direct coupled with resistive load, Transformer coupled with resistive load, design
theory, power amplifier design, harmonic distortion, power output, variation of output power with
load, thermal runaway, output transformer saturation, push-pull amplifiers, operation of class- A
push-pull amplifier, class- B push-pull amplifier, crossover distortion, class AB push-pull
amplifier, transistor phase invertor, conversion efficiency of class B amplifiers, design of ClassB
push-pull amplifier, complementary- symmetry amplifier.
3. MULTISTAGE AMPLIFIERS
Coupling of transistor amplifiers, frequency response of coupled amplifiers, cascading of RC
coupled amplifiers and their analysis. Tuned Amplifiers: single tuned, double tuned and stagger
tuned amplifiers and their analysis.
4. FEEDBACK IN AMPLIFIERS
Types of feedback, effect of negative feedback on gain, bandwidth, stability, distortion and
frequency response etc. Voltage series, current series, voltage shunt, current shunt feedback
circuits and their analysis.
5. OSCILLATORS
Conditions of oscillations. Different types of oscillators: RC Phase Shift, Wein Bridge, Hartley,
Colpitts and Crystal Oscillators. Derivation of expression for frequency and amplitude of these
oscillators.
6. REGULATED POWER SUPPLIES
Zener diode as Voltage Regulator, Transistor Series and Shunt Regulators, Current limiting, Line
and Load Regulation.