Electronic Circuits and Analysis

EC25C05:

Electronic Circuits and Analysis

Course Objective:

Covers diode, BJT, and MOSFET circuits for designing amplifiers, feedback systems, and waveform generators using simulation and application-based problem solving.

Diode and Filter Circuits:

Diode circuits - clipper, clamper, voltage doubler, voltage quadrupler, half-wave rectifier, centre-tapped full-wave rectifier, and bridge rectifier circuits. Power supply design. Regulators – Voltage regulator circuits using Zener diode. Passive filters – analysis of RC, RL, RLC filters.

BJT Circuits:

Load-line analysis, different biasing techniques of BJT, bias stabilization, and early effect, RC-coupled and transformer-coupled multistage amplifiers, and current mirror circuits.

MOSFET Circuits:

Biasing by fixing VGS, biasing by fixing VG, and connecting a resistor in the source, Biasing using a drain-to-gate feedback resistor, and biasing using a current source. Analysis and design of common source, common drain, common gate amplifier configurations.

Frequency Response of Amplifiers:

Frequency response of amplifiers – Low frequency response of BJT and FET amplifiers, lower cut off frequency - hybrid π equivalent circuit of BJT - high frequency response of BJT amplifiers –upper cut off frequency – transition frequency - Miller effect, high frequency response of FET amplifiers. Wide band amplifiers - Wide banding techniques – CC–CE /CD-CS cascade, cascode amplifier, Darlington pair.

Feedback Amplifiers and Waveform Generators:

Feedback and stability- negative and positive feedback in amplifiers, analysis of four feedback topologies, loop gain. Oscillators - Barkhausen criterion, effect of feedback on amplifier poles, Bode plots, gain and phase margins; positive feedback and sinusoidal oscillators using BJT - Wein bridge oscillator, RC phase shift oscillator, Hartley and

Colpitts oscillators. Multivibrators using BJT – Astable, Monostable, and bistable circuits.

Power Amplifiers and Wideband Techniques:

Power amplifiers –Analysis of Class A, B, AB, C, D & S power amplifiers, Conversion efficiency and relative performance, Total Harmonic Distortion (THD), Relationship Between Total Power and THD, Heat sinks.

Suggested activities: Quiz, problem-solving assignments, circuit simulation using

SPICE tools.

Weightage: Continuous Assessment: 40%, End Semester Examinations: 60%.

Assessment Methodology: Assignment (20%), Software activity (20%), Quiz (20%),

Internal Examinations (40%).

References:

1. Sedra, A. S., & Smith, K. C. (2020). Microelectronic circuits (8th ed.). Oxford University Press.

2. Neamen, D. A. (2021). Microelectronics: Circuit analysis and design (5th ed.). McGraw-Hill Education.

3. Razavi, B. (2016). Fundamentals of microelectronics (2nd ed.). Wiley.

4. Bell, D. A. (2008). Electronic devices and circuits (5th ed.). Oxford University Press.

5. Boylestad, R. L., & Nashelsky, L. (2021). Electronic devices and circuit theory.

Pearson Education.