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Electronics Devices & Circuits

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प्रस्तावना

6.2 Dual Tracking Power Supply using IC 78XX, IC 79XX
1. Transistor
1. Introduction
1.1 Construction and Symbols
1.2 Transistor Operation
1.3 Transistor Amplifying Action
1.4 Transistor Configurations
1.5 Transistor as Switch
2. BJT Biasing
2.1 Need for Biasing
2.2 Concept of DC Load Line
2.3 Selection of Operating Point (Q-point)
2.4 Need of Stabilization of Q-point
2.5 Thermal Runaway
2.6 Methods of Transistor Biasing
Solved Examples 33
2. Field Effect Transistor (FET)
1. Introduction
1.1 Types of Field Effect Transistor
1.2 JFET (Junction Field Effect Transistor)
2. Biasing of JFET
2.1 FET as Voltage Variable Resistance (VVR)
2.2 Common Source FET Amplifier
3. MOSFET
3.1 Depletion MOSFET
3.2 N-channel Enhancement Type MOSFET
3.3 Advantages of MOSFET
3.4 Disadvantages of MOSFET
3.5 Applications
3.6 Depletion MOSFET as an Amplifier
3.7 E-MOSFET as a Switch
3. Amplifier
1. Introduction
2. Small Signal and Large Signal Amplifiers
2.1 Small Signal Amplifiers
2.2 Large Signal Amplifiers
2.3 Small Signal Amplifier Using BJT
2.4 Classification of Amplifiers
2.5 Graphical Analysis
2.6 Determination of Current, Voltage and Power Gain, Input and Output Resistance, Phase Shift between Input and Output
2.7 AC Load Line
2.8 AC Equivalent Circuit of Transistor CE Amplifier
2.9 Single Stage CE Amplifier with Voltage Divider Bias
2.10 Cascade Amplifiers / Multistage Amplifier
2.11 Types of Amplifier Coupling
Solved Examples
3. FET Amplifier
4. Power Amplifier
4.1 Comparison of Voltage Amplifiers and Power Amplifiers
4.2 Performance Parameters of Power Amplifiers
4.3 Classification of Power Amplifiers
4.4 Class A Power Amplifier
4.5 Class B Power Amplifier
4.6 Class AB Power Amplifier
4.7 Class C Power Amplifier
4.8 Comparison of Different Power Amplifier
4.9 Amplifier Distortion
4.10 Push Pull Power Amplifiers
4.11 Distortion in Push Pull Amplifier
5. Tuned Amplifier
5.1 Necessity of Tuned Amplifier
5.2 Classification of Tuned Amplifier
Solved Examples
4. Feedback Amplifiers and Oscillators
1. Concept of Feedback
1.1 Principle of Feedback Amplifiers
1.2 Types of Negative Feedback
1.3 Advantages of Negative Feedback (Effects of Negative Feedback)
1.4 Comparison of Feedback Amplifier
1.5 Applications of Negative Feedback
Solved Examples
2. Introduction to Oscillators
2.1 Difference between an Amplifier and Oscillator
2.2 Classification of Oscillators
2.3 Nature of Sinusoidal Oscillations
2.4 Requirement of Oscillation - Barkhausen Criterion
2.5 Tuned Circuit Oscillators
2.6 RC Oscillators
2.7 Comparison of RC and LC Oscillators
2.8 Comparison of Different LC Oscillator
Solved Examples
5. Time Base Generators
1. Unijunction Transistor (UJT)
1.1 Basic Construction of UJT
1.2 Working Principle of UJT
1.3 Intrinsic Standoff Ratio
1.4 V-I Characteristic of UJT
2. Time Base Generators
2.1 General Time Base Signals
2.2 Errors in Generation of Sweep Signals
2.3 Parameters of Time Base Generator
2.4 Types of Time Base Circuits
2.5 Methods of Generating a Time Base Waveform
2.6 Applications of Time Base Generators with Reference to TV, CRO
2.7 Comparison of Miller Sweep and Bootstrap Circuit
Solved Examples
6. Voltage Regulators
1. Introduction
2. Basic Block Diagram of DC Power Supply
3. Basic Zener Diode Voltage Regulator
4. Voltage Linear Regulators
4.1 Transistorized Series Voltage Regulator
4.2 Transistorized Shunt Voltage Regulator
5. Regulator IC’s
5.1 Block Diagram of IC Voltage Regulator
5.2 Advantage of IC Voltage Regulators
5.3 Linear Voltage Regulator IC 723 (Series Regulator)
5.4 Specification and Rating of IC 723
5.5 Salient Features of IC 723
5.6 Applications of IC 723
6. Three Terminal Voltage Regulator IC’s (78XX, 79XX)
6.1 Block Diagram of 3 Pin Fixed Voltage Regulator IC’s
solved paper of winter 2013