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4G curriculum (older)

For students clearing pending subjects of the 4G scheme (7-digit subject codes, e.g. 4341602). Students admitted under the current scheme study the 5G curriculum.

4321103 · Semester 2 · 4G scheme

Electronic Circuits & Applications

Notes and solutions following the Gujarat Technological University (GTU) syllabus for 4321103. Independent material — not issued by the university.

Electronics & Communication Engineering

Materials

Syllabus

The official syllabus this material follows.

  • Syllabus

    8 pages

    FreeRead

Complete Book

The whole syllabus, unit by unit, written for the exam.

Problem Solver

Step-by-step solutions to typical problems.

PYQ Solutions

Past university papers, fully solved.

  • Solved past papers — detailed answers

    192 pages · English + ગુજરાતી

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  • Solved past papers — short answers

    94 pages · English + ગુજરાતી

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Syllabus units

Unit 1: Transistor Biasing circuits And Thermal stability10 h · 16 marks
  • Biasing of Amplifier and Definition of Operating Point
  • The Load Lines
  • Biasing Methods
  • Stability Factor
  • Compensation techniques for bias stability
  • Thermal Runaway, Thermal Resistance & Thermal Stability
  • Heat Sink and its types
Unit 2: Frequency Response of Transistor Amplifier8 h · 14 marks
  • Gain, Bandwidth and Gain Bandwidth product
  • Effect of Emitter Bypass Capacitor and Coupling Capacitor on frequency response
  • Frequency Response of Single Stage Amplifier
  • Different Coupling Techniques for cascading
  • Frequency Response of Two Stage RC Coupled amplifiers
Unit 3: Hybrid Parameters4 h · 8 marks
  • Two port network, h – parameters and its equivalent circuits
  • h - Parameters for Transistor amplifier
  • Transistor Amplifier parameters- Av, Ai, Ap, Ro, Ri using h- parameters (No Derivations)
Unit 4: Applications of Diodes and Transistors10 h · 16 marks
  • Different types of Clipper Clamper circuits, Voltage Multiplier circuits
  • Seven Segment Display, Infrared (IR) LED, OLED, AMOLED, Freewheeling (fly back) diode, switching diode, opto-coupler
  • Transistor used as a Tuned Amplifier
  • Darlington Pair and its applications
  • A relay driver circuit using transistors and ICs(TIP122, ULN2003, ULN 2803)
Unit 5: Regulated Power Supply10 h · 16 marks
  • Regulated power supply
  • Shunt voltage regulator
  • Transistorized series voltage regulator (basic and with feedback, without derivation)
  • Three Terminal Fixed/ variable voltage regulator
  • Switch mode power supply(SMPS)
  • Uninterruptible power supply (UPS)
  • Solar battery charger circuits

About this course

Electrical, Electronic, Instrumentation and allied engineering diploma holders are required to use and maintain various types of electronically controlled equipment. The fundamental principles of electronics are to be applied in most of the situations to arrive at the probable solutions which is faced in the world of work, therefore the knowledge of the functions of various basic electronic devices and components and practical skills acquired through the laboratory experiments will help them, when they work with electronic equipment and its sub-circuits. This course is designed to develop the skills to use the basics electronic components and apply the knowledge to maintain the various types of electronic circuits.