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We are very happy to hand over this text book of S.Y.B.Sc. PHY-202(A)- MJ : Electronics to S.Y.B.Sc. students. This book has been presented to you according to the revised...

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Electronics
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We are very happy to hand over this text book of S.Y.B.Sc. PHY-202(A)- MJ : Electronics to S.Y.B.Sc. students. This book has been presented to you according to the revised syllabus of Savitribai Phule Pune University implemented from June 2025. An attempt is made to give more emphasis on essential modern concepts in physics. The concepts are illustrated and elaborated with necessary examples. Sufficient exercise is given at the end of each of each topic for the practice of the students. We hope that the book will fulfil the expectations of the students and teachers. We hope that this book will cater the exact requirements. We are thankful to our vibrant publisher Shri Rangrao Patil and all staff of Prasant Publications for their efforts and keen interest in publishing this book in a very limited span of time. Any comment, criticism and suggestions from the readers for improving the book will be highly appreciated.

1. Semiconductor Devices…………………………………………………………………… 7
1.1. Introduction to Diodes
1.2. Transistors: Symbol, Construction, and its types
1.3. Bipolar Junction Transistor (BJT):
1.3.1. Operation of NPN Transistor
1.3.2. PNP Transistor (Diagram and Symbol only)
1.3.3. Transistor Circuit Configuration
1.3.4. Input and Output Characteristics of CE
1.3.5. Transistor Biasing
1.3.6. Applications:
1.4. Unijunction Transistor (UJT):
1.4.1. Symbol, Types, Construction, and Working
1.4.2. Application of UJT (states the list)
Numerical Problems
2. Operational Amplifiers ………………………………………………………………… 44
2.1. Introduction to OP-amp:
2.1.1. Symbol and Internal Block Diagram of an Op-amp,
2.1.2. Op-amp Parameters,
2.1.3. Pin configuration, feedback (meaning and name only) and operation.
2.1.4. Characteristics of an Ideal Op-amp (List only)
2.2. Concept of:
2.2.1. Virtual ground,
2.2.2. Real ground,
2.2.3. Difference between virtual and real ground.
2.3. Applications of Op-Amp:
2.3.1. Inverting Amplifier,
2.3.2. Non-Inverting Amplifier,
2.3.3. Op-Amp as an Adder,
2.3.4. Op-Amp as subtractors
Numerical Problems

3. Digital Electronics ……………………………………………………………………….. 66
3.1. Introduction to Analog and Digital Signals:
3.1.1. Logic Levels and
3.1.2. Digital Waveforms
3.2. Number System and Interconversion:
3.2.1. Binary,
3.2.2. Decimal,
3.2.3. Octal, and
3.2.4. Hexadecimal
3.3. Binary Arithmetic:
3.3.1. Addition
3.3.2. Subtraction (1’s and 2’s complement only)
3.4. Boolean Algebra and Logic Gates:
3.4.1. Basic Operations: AND, OR, NOT.
3.4.2. Truth Tables
3.4.3. Boolean Algebra Laws
3.4.4. Universal Gates (NAND, NOR, EXOR, EXNOR)
3.5 De Morgan Theorem (First and Second)
Numerical Problems
Reference Books………………………………………………………………………………. 103