Electronics

course outline

Topics

• Types of Electron Emission

  Qualitative treatment should include: Thermionic emission; photoemission; secondary emission and field emission.

• Concepts of Measuring Instrument

  Qualitative treatment only which should include: Classification – analogue and digital.

• Semiconductor Diodes - Biasing of Diodes

  Practical demonstration of I-V characteristics of P-N junction diode in the forward and reverse bias modes.

• Electric Circuit - Circuit Arrangement

  Series, parallel, series-parallel; includes practical wiring of different circuit arrangement.

• AC Circuits - R-L-C Circuits

  Qualitative and quantitative treatments including concepts of capacitive reactance, inductive reactance, impedance, RL and RC circuits, calculations of capacitive reactance (Xc) and inductive reactance (XL), and resonance frequency.

• Power Amplifiers - Classification

  Class A, Class B, Class AB, Class C, application, power gain, methods of biasing and efficiency.

• Rectification - Types of Voltage Regulator

  e.g. diac, triac, thyristor, series voltage regulator, transistorized electronic voltage regulator.

• Oscillators - Positive vs. Negative Feedback

  Difference between positive feedback (oscillator) and negative feedback (amplifier).

• Digital Basics - Number System

  Different number systems (binary, octal, hexadecimal), simple calculations in binary, conversions between bases, addition and subtraction of binary numbers.

• Digital Basics - Logic Gates (Combinational)

  Qualitative treatments of AND, OR, NOT, NOR and NAND; includes logic gates using switching arrangements, truth table and Boolean expression.

• Principles of Radio Waves

  Relationship between velocity, frequency, wavelength; meaning of radio communication; modulation and demodulation; advantages of F.M. over A.M.; phase modulation (mention only).

• Stages of Radio Receiver

  Types of radio receivers; advantages of superheterodyne over direct input receiver.

• Fault Detection in Radio Receiver

  Use faulty radio to detect and repair fault; project work on construction and designing of a simple radio receiver.

• Transmitters and Receivers

  Block diagrams of A.M. and F.M. transmitters, A.M. and F.M. superheterodyne radio receivers, mono and colour T.V. chrome receivers; functions of each block and direction of signal flow; qualitative treatment of T.V. standard (NTSC, PAL, SECAM, BIG).

• Methods of Communication

  Fibre optics, microwave, satellite, cellular phone, digital communication network, etc.

• Transducers and Sensors - Types and Uses

  Includes acoustic, dynamic electrostatic, electromagnetic, capacitive, pressure sensor, photoelectric, proximity sensor etc. Also, thermistor as a temperature sensing device.

• Transducers and Sensors - Acoustic Transducer

  Qualitative treatments only; types include loudspeaker, microphone, earphone; principles of operation, function, and application.

• Control System - Qualitative Treatment

  Types of control circuits (open and closed loop); principle of operation of open loop and closed loop.

• Control System - Servo Mechanism

  Qualitative treatment only including meaning, principle of operation, types, uses and application e.g. in car, doors, booths etc.

• Electromagnetic Field

  Trace magnetic lines of force in a current-carrying conductor; Lenz's and Faraday's laws.

• Self and Mutual Induction

  Definitions only; calculations involving energy stored in a coil; applications of electromagnetism including electric bell, solenoid, loudspeaker, buzzer, moving-coil instrument, moving-iron instrument, earphone and microphone.