JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Basic Electrical and Electronics Engineering

Course Objectives:

• To explain the operation, design and Analysis of single stage amplifiers using BJT and MOSFET.
• To analyze feedback amplifiers, large signal and oscillators.
• To explain the operation of linear and non linear wave shaping circuits
• To understand the switching characteristics of diode and transistor

Course Outcomes

After completion of this course the student is able to

• Apply the knowledge of BJT to design practical amplifier circuits.
• Design electronic sub systems such as feedback amplifiers, oscillators and power amplifiers to meet the required specifications.
• Design linear and non linear wave shaping circuits with different inputs.
• Analyze multi vibrators using transistors.

UNIT - I

Single Stage Amplifiers: Analysis of CE,CB,&CC Amplifiers Classification of Amplifiers Distortion in Amplifiers, Comparison of CE, CB, CC Amplifiers Low frequency Analysis, Low frequency response of BJT Amplifiers ,Low frequency response of FET Amplifiers Miller Effect Capacitance, High Frequency response of BJT amplifiers, Square Wave Testing.

UNIT - II

Feedback Amplifiers: Concept of feedback Amplifiers, General characteristics of negative feedback amplifiers, Effect of Feedback on Amplifier characteristics, Voltage series, voltage shunt ,Current series and current shunt Feedback configurations, Illustrative problems Oscillators: Conditions for oscillations, Frequency and Amplitude Stability of Oscillators, Generalized analysis of LC Oscillators, Quartz, Hartley, and Colpitt’s Oscillators, RC –phase shift and Wein Bridge oscillators.

UNIT - III

Large Signal Amplifiers: Class A Power Amplifier, Maximum Efficiency of Class –A Amplifier, Transformer Coupled Amplifier, Push Pull Amplifier complimentary Symmetry Class-B Power Amplifier, Phase Inverters, Transistor Power Dissipation, Thermal Runway, Heat Sinks

UNIT - IV

Wave Shaping: High Pass, Low Pass RC Circuits, their response for Sinusoidal, Step, Pulse and Ramp Inputs. Clippers and Clampers: Diode Clippers, Transistor Clippers, Clipping at Two Independent Levels, Transfer Characteristics of Clippers, Comparators, Clamping Operation, Clamping Circuits using Diode with different inputs, Clamping Circuit Theorem, Practical Clamping Circuits.

UNIT - V

Switching Characteristics of Devices: Diode as a Switch, Piecewise Linear Diode Characteristics, Transistor as a Switch, Breakdown Voltage Consideration of Transistor, Design of Transistor Switch, Transistor Switching Times. Multivibrators: Analysis and Design of Bistable, Monostable, Astable, Multivibrators and Schmitt Trigger using Transistors.

TEXT BOOKS:

• 1. “Robert L Boylestead and Louis Nashelsky”, “Electronic Devices and circuit theory”, Pearson, Tenth edition 2009
• 2. “S. Salivahanan, N. Suresh Kumar and A. Vallava Raj”, “Electronic Devices and circuits”, TMH, 2 nd Edition 2008.
• 3. “David A. Bell”, “Solid state Pulse Circuits”, PHI ,4th Edition 2007.

REFERENCE BOOKS:

• 1. “Robert T. Paynter”, “Introductory Electronic Devices and Circuits”, PEI,7 Edition, 2009.
• 2. “Anil. K. Maini, Varsha Agarwal”, “Electronic Devices and Circuits”, Wiley, 1 st Edition 2009.
• 3. “Jacob Milliman, Harbert Taub and Mothiki S Prakash Rao”, “Pulse Digital & Switching Waveforms”, TMH, 2nd Edition 2008.