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Electronic Circuits II Scanned Lecture Notes - Charles Edition
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Electronic Circuits II Premium Lecture Notes by Charles Michael John, Specially for ECE Candidates. Syllabus Covered based on Anna University R2008 Regulation.

Content :
UNIT-I

FEEDBACK AMPLIFIER
  • Feedback
  • Types
  • 1. Positive feedback (or) regenerative feedback
  • 2. Negative feedback (or) degenerative feedback
  • Effect of negative feedback
  • 1. Sensitivity of gain
  • 2. Desensitivity of gain
  • 3. Cut-off frequency
  • 4. Distortion
  • 5. Noise
  • 6. Input impedance
  • 7. Output impedance
  • Types of negative feedback connection
  • a. Voltage series feedback connection
  • b. Voltage shunt feedback connection
  • c. Current series feedback connection
  • d. Current shunt feedback connection
  • Equivalent circuit
  • Block diagram
  • Transfer ratio (Av)
  • Input resistance
  • Output resistance
  • Method of identifying feedback topology and feedback factor
UNIT-II

OSCILLATOR
  • Colpitt’s oscillators
  • Clap oscillator
  • Advantages
  • Franklin oscillators
  • Armstrong oscillators
  • Tuned collectors oscillators
  • Problems
  • RC oscillators
  • i. RC phase shift oscillators
  • ii. Wein bridge
  • iii. Twin-T oscillators
  • Piezo electric effect
  • Quartz crystal construction
  • X – Cut
  • Y - Cut
  • Symbol of crystal and equivalent circuit
  • Frequency response curve
  • Crystal oscillators
  • Miller crystal oscillators
  • i. Serial resonant frequency
  • ii. Parallel resonant frequency
  • Pierce crystal oscillators
  • Application
  • LC- oscillator
  • Frequency stability of oscillation
UNIT-III

TUNED AMPLIFIER
  • Introduction
  • Types of tuning amplifier
  • 1. Small signal tuned amplifier
  • 2. Large signal tuned amplifier
  • Q-factor
  • Q-factor of capacitors
  • Loaded and unloaded Q
  • Types of coil losses
  • 1. Copper loss
  • 2. Eddy current loss
  • 3. Hysteresis loss
  • Parametric diagram for transistor
  • Classification
  • i. Single tuned amplifier
  • ii. Double tuned amplifier
  • iii. Stagger tuned amplifier
  • Effective quality factor
  • Response of single tuned amplifier
  • Problems
  • Conduction angle
  • Efficiency of class c amplifier
  • Neutralization
  • Types
  • 1. Hazeltine neutralization
  • 2. Neutrodyne
  • 3. Neutralization ring coil
  • 4. Rice neutralization
  • Double tuned amplifier
  • Stability
UNIT-IV

WAVERHAPING AND MULTIVIBRATOR CIRCUITS
  • RC circuit
  • 1. High pass
  • 2. Low pass
  • Ramp input waveform
  • Pulse waveform
  • Square wave form
  • RL circuits
  • a. High pass RL network
  • b. Low pass RL network
  • Integrator and differentiator
  • Integrator RC
  • Rise time
  • Duty cycle
  • Turn on time
  • Fall time
  • Turn off time
  • Wave shaping
  • Clipper clamper
  • i. Positive clipper
  • ii. Negative clipper
  • Biased negative clipper
  • Biased negative clipper with neverse polarisg
  • Combinational clipper
  • Two level slicer
  • Clamper
  • 1. Positive clamper
  • 2. Negative clamper
  • Application
  • Multivibrator
  • Classification
  • 1. Astable multivibrator
  • 2. Monostable multivibrator
  • 3. Bistable multivibrator
  • Collector coupled astable multivibrator
  • Modified astable multivibrator
  • Emitter coupled astable multivibrator
  • Application
  • Triggering method for bistable multivibrator
  • 1. Unsymmetrical
  • 2. Symmetrical
  • 3. Application of Schmitt trigger
UNIT-V

BLOCKING OSCILLATOR AND TIME BASE GENERATOR
  • 1. UJT relaxation oscillator
  • 2. Pulse transformer
  • Characteristics
  • Coupling coefficient
  • Transformer ratio
  • Application of pulse transformer
  • Blocking oscillator
  • Astable blocking oscillator
  • Magnetizing current
  • Advantages
  • Disadvantages
  • Push-pull astable blocking oscillator
  • Voltage across R1 and C1
  • Frequency control using core saturation
  • Trigger blocking oscillator
  • Monostable blocking oscillator with emitter timing
  • Current waveform and voltage waveform
  • Application of blocking oscillator
  • 1. Voltage time base circuit
  • a. Miller integration
  • b. Boot strap
  • 2. Current time base generation
  • problems
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