EC6401 Electronic Circuits II Important Questions

Unit 1

 Feedback Structure

 Feedback amplifiers

 Series

 Shunt, Series

 Determining the Loop Gain

 Stability Problem

 Nyquist Plot

 Frequency Compensation

Unit 2

 Barkhausen Criterion

 General form of an Oscillator

 Hartley, Colpitts, Armstrong Tuned collector oscillators

 RC oscillators

 phase shift

 Wienbridge

 Frequency range of RC and LC Oscillators

 Quartz Crystal Construction

 Miller and Pierce Crystal oscillators

Unit 3

 Unloaded and loaded Q of tank circuits

 small signal tuned amplifiers

 double tuned amplifier

 large signal tuned amplifiers

 Class C tuned amplifier

 Efficiency and applications of Class C tuned amplifier

 Neutralization

 Hazeltine neutralization method

Unit 4

 RC & RL Integrator and Differentiator circuits

 Speed-up Capaitor

 Diode clippers and Comparator

 Monostable and Bistable multivibrator

 Triggering methods for Bigtable multivibrators

 Schmitt trigger circuit

Unit 5

 UJT saw tooth waveform generator

 Pulse transformers

 Blocking Oscillator

 Astable Blocking Oscillators with base timing

 Triggered blocking oscillator

 Monostable blocking oscillator with base and emitter timing

 Time base circuits

 Voltage-Time and Current-Time base circuit

 Linearization through adjustment of driving waveform

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