4G curriculum (older)
1323202 · Semester 2 · 4G scheme
Electronics Devices & Circuits
Notes and solutions following the Gujarat Technological University (GTU) syllabus for 1323202. Independent material — not issued by the university.
Materials
Complete Book
The whole syllabus, unit by unit, written for the exam.
Complete Book
187 pages
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Problem Solver
Step-by-step solutions to typical problems.
Problem Solver
35 pages
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PYQ Solutions
Past university papers, fully solved.
Solved past papers — detailed answers
240 pages · English + ગુજરાતી
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96 pages · English + ગુજરાતી
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Syllabus units
Unit 1: Transistor Biasing circuits5 h · 12 marks
- Biasing of Amplifier and Definition of Operating Point
- The Load Lines: D.C. Load Line and A.C. Load Line
- Stability Factor: Definition and features
- Biasing Methods - fixed bias, collector to base bias and voltage divider bias (without analysis)
- Thermal Runaway, Thermal Resistance & Thermal Stability
- Heat Sink , types and applications of heat sinks
Unit 2: Transistor applications6 h · 16 marks
- Gain, Bandwidth and Gain Bandwidth product
- Frequency Response of Single Stage Amplifier
- RC Coupling Techniques for cascading
- Frequency Response of Two Stage RC Coupled amplifier
- Negative feedback and positive feedback (only types , and block diagram without analysis )
- Voltage series negative feedback
- List advantages and disadvantages of negative feedback on the parameter of amplifiers
- The Barkhausen's criterion for oscillator
- Hartley oscillators, Colpitt oscillator , Crystal oscillator
- working of transistor as switch and relay driver
Unit 3: Thyristors5 h · 14 marks
- SCR: symbol ,construction, working, characteristics
- Working of SCR using two transistor analogy
- Gate Triggering method of SCR
- Natural Commutation techniques of SCR
- Characteristics of DIAC and ,TRIAC
- Optocoupler TRIAC driver : MOC 3041 and MOC 3083
- TRIAC applications as fan regulator and ON-OFF control of AC power
- SCR application for DC power control
Unit 4: Integrated circuits9 h · 20 marks
- Brief introduction to integrated circuits
- Block diagram of typical operational amplifier
- Op-Amp: Open loop, Close loop
- Op-Amp parameters: Input Offset voltages, input offset current, input bias current, CMRR, slew rate, frequency response
- Op-amp applications such as Voltage follower, Inverting amplifier, non-inverting amplifier, summing amplifier, integrator, differentiator, comparator, D-A converter, Wein bridge oscillator
- IC 555: block diagram, working , Pin diagram
- Application of IC 555: Mono stable Multivibrator, Bistable Multivibrator, Astable Multivibrator
Unit 5: Regulated Power Supply3 h · 8 marks
- Regulated power supply
- Three Terminal Fixed and Adjustable voltage regulator IC: 78xx, 79xx, LM317
- Switch mode power supply(SMPS)
- Solar based battery charger circuits
About this course
Electrical, Electronic and communication, Information and communication technology 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 devices and apply the knowledge to maintain the various types of electronic circuits.