UNIVERSITY OF MADRAS
B.Sc. DEGREE COURSE IN Physics
SEMESTER SYSTEM WITH CREDITS
(Effective from the Academic Year 2003-2004)

SYLLABUS

Semester V - Paper VII - Basic Electronics

Duration of Examination: 3 hrs
Maximum Marks: 100
Credits: 4

Unit I

Semiconductors:

Pure semiconductor, recombination of electrons and holes, electron energy bands in crystals, classification of solids in terms of forbidden energy gap, Fermi level, junction diode.

Rectifiers:

Half wave and full wave rectifiers - Bridge rectifier-d.c current, r.m.s current, power, efficiency and ripple factor for half wave and full wave rectifiers - Zener diode- Zener regulated power supply.

Unit II

Transistors:

Transistor construction-different modes of operation - Alpha and Beta of a transistor - characteristics in CE and CB modes-transistor biasing.

Transistor amplifier:

Two port representation of a transistor - h-parameters-AC equivalent circuit using h-parameters-Analysis of an amplifier using h-parameters - common emitter only expressions for current gain, voltage gain, input impedance, output impedance and power gain.

RC coupled amplifier-frequency response - analysis of low, mid and high frequency regions-classification of amplifiers-class A power amplifier - Push-pull, class-B power amplifier - Emitter follower.

DC amplifier-Operational Amplifier fundamentals - characteristics - Inverting amplifier - non-inverting amplifier - unity follower

Unit III

Feedback and oscillators:

Feed back in amplifier - effect of negative feed back - concept of feed back oscillators. Hartley, Colpitt's, phase shift and Wien's bridge oscillators - expressions for frequency of oscillation and condition for oscillation in each case.

Unit IV

Wave shaping circuits and multivibrators:

Clipping and clamping circuits - biased clipper-integrating and differentiating circuits - RC time constants. Multivibtrators - Astable - monostable and bi-stable multivibrators - using transistors.

Unit V

Radio and Television:

Radio communication and Television - Modulation - amplitude modulation, frequency modulation and phase modulation-detector-Radio transmitter-receiver-concepts of television system-Image orthicon-scanning-synchronization-TV transmitter - TV receiver-TV channel width- Principles of colour TV- Satellite communication

Books for Study

1. Principles of Electronics by V.K. Mehta, S.Chand & Co., 6^th edition, 2001.
2. Elements of Electronics by Bagde and S.P. Singh
3. Functional Electronics by Ramanan.
4. Monochrome and color TV by Gulati

Books for Reference:

1. Electronics principles by Malvino

2. Electronic devices and circuits by Allen Mottershed

3. Monochrome and color TV by Gulati

4. Basic television and videosystems by B,Grob.

5. Solid State Electronics by Manna, Tata, McGraw Hill.

6. Basic Electronics, 6^th Edition by B. Grob, McGraw- Hill, NY, 1989