EC8452 – NOTES & QP
| NOTES | CLICK HERE |
| SEMESTER QP | CLICK HERE |
EC8452 – SYLLABUS
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