DC Biasing – BJT’s
Introduction, operating point, Fixed-Bias configuration, Emitter-bias configuration, Voltage-Divider Biasing, Emitter Follower Configuration. Relevant problems.
DC Biasing – FET’s
Introduction, Fixed-Bias Configuration, Self-Bias Configuration, Voltage-Divider biasing, Numerical.
BJT AC Analysis
BJT modeling, re transistor model: Common Emitter fixed Configuration, Voltage-Divider Bias, CE Emitter- Bias Configuration (Excluding P-spice Analysis), Emitter Follower Configuration, Cascaded Systems. The Hybrid Equivalent model, Approximate Hybrid Equivalent Circuit, Fixed bias configuration, Voltage-Divider configuration. Hybrid λ Model.
FET Amplifiers
Introduction, JFET Small Signal Model, JFET AC equivalent Circuit, Fixed- Bias Configuration, Self-Bias Configuration (with bypassed Rs only), Voltage-Divider Configuration, Source Follower Configuration.
BJT and JFET Frequency Response:
Introduction, General Frequency Considerations, Low Frequency Response of BJT Amplifier, Low Frequency Response of FET Amplifier, Miller Effect Capacitance, Multistage frequency effects.
Power Amplifiers:
Introduction: Definitions and Amplifier Types, Series Fed Class A Amplifier, Transformer Coupled Class A Amplifier, Class B Amplifier operation.
Class B amplifier circuits:
Transformer-Coupled Push-Pull Circuits, Complementary–Symmetry Circuits only, Amplifier Distortion, Class C and Class D Amplifier.
Feedback and Oscillator Circuits:
Feedback concepts, Feedback connection types, effects of negative feedback, practical feedback circuits: - FET based voltage series Feedback, BJT based current series, and FET based voltage shunt feedback.
Oscillator operation:
Barkhaunsen’s criteria, Tunedoscillator Circuits: BJT based Colpitts, Hartley and Crystal oscillator. Unijunction transistor oscillator
Note:-Relevant problems on all topics
Course Outcomes:
After studying this course, students will able to:
• Explain the biasing of BJT and FET
• Model BJT/FET for ac/dc analysis
• Design Single stage, Multistage amplifier, with and without feedback
• Analyze Frequency response of BJT and FET.
• Acquire the knowledge of classifications of Power amplifier, operation, and able to design power amplifier.
• Apply the knowledge gained in designing of BJT/FET/UJT based Oscillators.
Question Paper Pattern:
• The question paper will have TEN questions.
• Each full question carry 20 marks
• There will be TWO full questions (with maximum of THREE sub questions) from each module.
• Each full question will have sub questions covering all the topics under a module.
• The students will have to answer FIVE full questions, selecting ONE full question from each module.
Textbook:
Robert L. Boylestad and Louis Nashelsky, “Electronics devices and Circuit theory”, Pearson, 10th Edition, 2009, ISBN:9788131727003
Reference Book:
David A. Bell, “Electronic Devices and Circuits”, Oxford University