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Unit1.
FEEDBACK AMLIFIERS: Classification, Feedback concept, transfer gain
with feedback. General characteristics of negative feedback amplifiers.
Analysis of voltage series, voltage shunt, current series and current
shunt feedback amplifiers. Stability criterion.
Unit2. OSCILLATORS: Classification of oscillators and Criterion for
oscillation. RC-phase shift, Hartley, Colpitts, tuned collector, Wein
Bridge and crystal oscillators. Astable, monostable and bistable
multivibrators. Schmitt trigger.
Unit3. OP-AMP AND ITS APPLICATIONS: Operational amplifier:
inverting and non-inverting modes. Characteristics of ideal op-amp. Offset
voltage and currents. Basic op-amp applications. Differential Amplifier
and common mode rejection ratio. Differential DC amplifier and stable ac
coupled amplifier. Integrator and differentiator. Analog computation,
comparators, sample and hold circuits, logarithmic & antilog Amplifiers
and Analog multipliers.
Unit4. INTEGRATED CIRCUITS: Precision AC/DC converters-precision
limiting, Precision half wave and full wave rectifiers. Active average and
peak detectors, A to D and D to A converters. IC 555 timer and its
application. Regulated power supplies, Series and shunt voltage
regulators, Brief idea of Monolithic regulator.
Unit5. POWER AMPLIFIERS: Class –A large signal amplifiers, second
harmonic distortion, higher order harmonic generation, Transformer coupled
audio power amplifier, collector efficiency. Pushpull amplifier: Class A,
Class B and Class AB operations. Comparison of performance with single
ended amplifiers
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