MULTISTAGE AMPLIFIERS

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Presentation transcript:

MULTISTAGE AMPLIFIERS

Classification of Amplifiers Type of Signal Based on No.of Stages Type of Configuration Classification based on Frequency of conduction angle Operation Small Signal Large Signal Single Stage Multistage Common Emitter Common Base Common Collector Class A Amplifier Direct Current (DC) Class B Amplifier Audio Frequencies (AF) Class AB Amplifier Radio Frequencies (RF) VHF, UHF and SHF Class C Amplifier Frequencies

Need For Cascading

Block diagram of 2-Stage Cascade Amplifier Gain of 2-Stage Cascade Amplifier

Frequency Response of 2-Stage RC Coupled Amplifier

whenever there is a feedback connection in the circuit Miller’s Theorem Millers theorem is used o simplify the analysis of a circuit whenever there is a feedback connection in the circuit

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