EC8452 ELECTRONIC CIRCUITS II (EC-II)
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Important questions
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3. 3 pole feedback amplifiers
2. Neutralization method Full topic
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4. Double tuned amplifier
4. Schmitt trigger
Unit -5
1. Dc/dc converters
2. Boost ,buck ,buck boost analysis and design**
**Very important questions are bolded and may be asked based on this topic
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*These questions are expected for the exams This may or may not be asked for exams All the best.... from admin Santhosh
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Feedback Concepts — gain with feedback — effect of feedback on gain stability, distortion, bandwidth, input and output impedances; topologies of feedback amplifiers — analysis of series-series, shunt-shunt and shunt-series feedback amplifiers-stability problem-Gain and Phase-margins-Frequency compensation.
UNIT II OSCILLATORS
Barkhausen criterion for oscillation — phase shift, Wien bridge — Hartley & Colpitt?s oscillators — Clapp oscillator-Ring oscillators and crystal oscillators — oscillator amplitude stabilization.
UNIT III TUNED AMPLIFIERS
Coil losses, unloaded and loaded Q of tank circuits, small signal tuned amplifiers — Analysis of capacitor coupled single tuned amplifier — double tuned amplifier — effect of cascading single tuned and double tuned amplifiers on bandwidth — Stagger tuned amplifiers — Stability of tuned amplifiers — Neutralization — Hazeltine neutralization method.
UNIT IV WAVE SHAPING AND MULTIVIBRATOR CIRCUITS
Pulse circuits — attenuators — RC integrator and differentiator circuits — diode clampers and clippers –Multivibrators — Schmitt Trigger- UJT Oscillator.
UNIT V POWER AMPLIFIERS AND DC CONVERTERS
Power amplifiers- class A-Class B-Class AB-Class C-Power MOSFET-Temperature Effect- Class AB Power amplifier using MOSFET –DC/DC convertors — Buck, Boost, Buck-Boost analysis and design
UNIT I FEEDBACK AMPLIFIERS AND STABILITY
Feedback Concepts — gain with feedback — effect of feedback on gain stability, distortion, bandwidth, input and output impedances; topologies of feedback amplifiers — analysis of series-series, shunt-shunt and shunt-series feedback amplifiers-stability problem-Gain and Phase-margins-Frequency compensation.
UNIT II OSCILLATORS
Barkhausen criterion for oscillation — phase shift, Wien bridge — Hartley & Colpitt?s oscillators — Clapp oscillator-Ring oscillators and crystal oscillators — oscillator amplitude stabilization.
UNIT III TUNED AMPLIFIERS
Coil losses, unloaded and loaded Q of tank circuits, small signal tuned amplifiers — Analysis of capacitor coupled single tuned amplifier — double tuned amplifier — effect of cascading single tuned and double tuned amplifiers on bandwidth — Stagger tuned amplifiers — Stability of tuned amplifiers — Neutralization — Hazeltine neutralization method.
UNIT IV WAVE SHAPING AND MULTIVIBRATOR CIRCUITS
Pulse circuits — attenuators — RC integrator and differentiator circuits — diode clampers and clippers –Multivibrators — Schmitt Trigger- UJT Oscillator.
UNIT V POWER AMPLIFIERS AND DC CONVERTERS
Power amplifiers- class A-Class B-Class AB-Class C-Power MOSFET-Temperature Effect- Class AB Power amplifier using MOSFET –DC/DC convertors — Buck, Boost, Buck-Boost analysis and design