AE2 (Diploma Electronics and Communication Engineering 3rd)

1. Multistage Amplifiers (06 hrs)

a) Need for multistage amplifier

b) Gain of multistage amplifier

c) Different types of multistage amplifier like RC coupled, transformer coupled, direct

coupled, and their frequency response and bandwidth

2. Large Signal Amplifier (06 hrs)

a) Difference between voltage and power amplifiers

b) Importance of impedance matching in amplifiers

c) Class A, Class B, Class AB, and Class C amplifiers, collector efficiency and Distortion in

class A,B,C

d) Single ended power amplifiers, Graphical method of calculation (without derivation) of

output power; heat dissipation curve and importance of heat sinks. Push-pull amplifier,

and complementary symmetry push-pull amplifier

3. Feedback in Amplifiers (06 hrs)

a) Basic principles and types of feedback. b) Derivation of expression for gain of an amplifier employing feedback. c) Effect of feedback (negative) on gain, stability, distortion and bandwidth of an amplifier. d) RC coupled amplifier without emitter bypass capacitor. e) Emitter follower amplifier and its application.

4. Sinusoidal Oscillators (06 hrs)

a) Use of positive feedback

b) Barkhausen criterion for oscillations

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c) Different oscillator circuits-tuned collector, Hartley, Colpitts, phase shift, Wien’s bridge,

and crystal oscillator. Their working principles (no mathematical derivation but only

simple numerical problems)

5. Tuned Voltage Amplifiers (04 hrs)

a) Series and parallel resonant circuits and bandwidth of resonant circuits

b) Single and double tuned voltage amplifiers and their frequency response characteristics

6. Wave Shaping Circuits (06 hrs)

a) General idea about different wave shapers

b) RC and RL integrating and differentiating circuits with their applications

c) Diode clipping and clamping circuits and simple numerical problems on these circuits

7. Multivibrator Circuits (06 hrs)

a) Working principle of transistor as switch

b) Concept of multi-vibrator: astable, monostable, and bistable and their applications

c) Block diagram of IC 555 and its working and applications

d) IC 555 as monostable and astable multi-vibrator

8. Operational Amplifiers (06 hrs)

a) Characteristics of an ideal operational amplifier and its block diagram

b) Definition of differential voltage gain, CMRR, PSRR, slew rate and input offset current

c) Operational amplifier as an inverter, scale changer, adder, subtractor, differentiator, and

integrator

d) Concept of Schmitt trigger circuit and sample/hold circuit using operational amplifier and

their application

9. Regulated DC Power supply (02 Hrs.)

a) Concept of d.c. Power supply.

b) Line and load regulation.

c) Concept of fixed Voltage, IC regulators like 78