(Timing: Monday and Tuesday, 08:00 AM – 09:00 AM)
Circuit analysis: Networks-some important definitions, loop and nodal equations based on DC and AC circuits (Kirchhof's Laws).
Four terminal network: Ampere-volt conventions, open, close and hybrid parameters of any four terminal network; Input, Output and mutual impedence for an active four terminal network.
Various circuit theorems: Superposition, Thevenin, Norton, reciprocity, compensation, maximum power transfer and Miller theorems.
Semi-conductors and rectifications: Charge densities in N and P materials; Conduction by drift and diffusion of charge carriers, PN diode equation; capacitance effects.
Rectifiers: Half-wave, full wave and bridge rectifier: calculation of ripple factor, efficiency and regulation; Filters: series inductor, shunt capacitor, L section and π section filters.
Voltage regulation: Voltage regulation and voltage stabilization by Zener diode, voltage multiplier.
Transistor and transistor bias circuits: Notations and volt-ampere characteristics for bipolar junctions, transistor; Concept of load line and operating point, Hybrid parameters.
Transistor as amplifier: CB, CE, CC configurations; Analysis of transistor amplifiers using hybrid parameters and its gain-frequency response; Cascade amplifiers, basic idea of direct coupled and R-C coupled amplifiers; Differential amplifiers.
Need of bias and stability of Q point: stability factors, various types of bias circuits for thermal bias stability: fixed bias, collector to base feed back bias and four resistor bias.
Amplifier with feed back: Concept of feed back, positive and negative feed back, voltage and current feed back circuits.
Advantages of negative feed back: Stabilization of gain, effect of negative feed back on output and intput resistance, reduction of nonlinear distortion, effect on gain - frequency response.
Oscillators: Criteria for self excited and self sustained oscillations, circuit requirement for build-up of oscillation; Basic transistor oscillator circuit and its analysis: Colpitt's and Hartely oscillators, RC Oscillators, crystal oscillators and its advantages.
Field effect transistors and logic circuits: Junction field effect transistor (JFET) and metal oxide semiconductor field effect transistor (MOSFET): circuit symbols, biasing and volt-ampere characteristics, source follower operation of JFET, FET as variable voltage resister.
Logic circuits: Logic fundamentals: AND, OR, NOT, NOR, NAND, XOR gates, Boolean algebra, De Morgan's theorem, positive and negative logic, logic gates circuit realization using DTL and TTL logic, simplification of Boolean expressions.