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Upon completion of the course, the student should be able to: • Analyze different types of amplifier, oscillator and multi vibrator circuits. • Design BJT amplifier and oscillator circuits • Analyze transistorized amplifier and oscillator circuits • Design and analyze feedback amplifiers • Design LC and RC oscillators, tuned amplifiers, wave shaping circuits, multi vibrators, power amplifier and DC convertors. UNIT I FEEDBACK AMPLIFIERS AND STABILITY 9 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 9 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 9 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 9 Pulse circuits-attenuators-RC integrator and differentiator circuits-diode clampers and clippers-Multivibrators-Schmitt Trigger-UJT Oscillator.
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