Electronic Circuit Analysis Notes – ECA Notes
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SINGLE STAGE AMPLIFIERS
Classification of amplifiers- distrotion in amplifiers, analysis of CE, CC and CB configurations with simplified hybrid model, analysis of CE amplifier with emitter resistance and emitter follower, Miller’s Theorem and its dual, Design of Single stage RC coupled amplifier using BJT.
MULTI STAGE AMPLIFIERS
Analysis of Cascaded RC coupled BJT amplifiers Cascode amplifier, Darlington Pair, Different Coupling Schemes used in amplifiers- RC Coupled Amplifier, Transformer Coupled amplifier, Direct Coupled amplifier.
BJT AMPLIFIERS – FREQUENCY RESPONSE
Logarithms, Decibles, General frequency considerations, Frequency response of BJT amplifiers, Analysis at Low and High Frequencies, Effect of coupling and bypass capacitors. The hybrid pi – common emitter transistor model, CE short circuit current gain, Current gain with resistive load, single stage CE transistor amplifier response, gain-bandwidth poduct, emitter follower at higher frequencies.
Basic concepts, MOS small signal model, common source amplifier with resistive load, diode connected load and current source load, source follower, common gate stage cascode, folded cascode amplifier, and their frequency response.
Concepts of feedback, classification of feedback on amplifier characteristics, general characterstics of negative feedback amplifiers, effect of feedback on amplifier characteristics, voltage seriesm voltage shunt, current series and current shunt feedback cofigurations, Illustrative problems.
Classification of oscillators, conditions for oscillatorsm RC Phase shift oscillator , Generalized analysis of LC oscillator- Hartley and colpitts Oscillators, Wein Bridge & Crystal Oscillator, Stability of Oscillators.
LARGE SIGNAL AMPLIFIERS
Classification, Class A Large Signal Amplifiers, Transformer coupled class A Audio power amplifierm Efficiency of Class A Amplifier, Class B Amplifier, Efficiency of CLass b Amplifier, Class B Pushpull amplifier, Complimentary symmetry Class B Push-Pull amplifier, Distortion in Power Amplifiers, Thermal Stability and Heat sinks.
Introduction, Q- Factor , small signal tuned amplifier, effect of cascading single tuned amplifiers on bandwidth, effect of cascading double tuned amplifiers on bandwidth, stagger tuned amplifiermm stability of tuned amplifiers.
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