In multi stage RC coupled amplifier the coupling capitor
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Answer:
The coupling capacitor prevents the voltage or current biasing of one amplifier stage from modifying (upsetting) the biasing of another stage, while allowing the signal to pass from one stage to another. ... The coupling capacitor, in combination with the resistances in stages being coupled, forms a high-pass filter.
Answer:
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Explanation:
Construction of a Two-stage RC Coupled Amplifier
The constructional details of a two-stage RCķ coupled transistor amplifier circuit are as follows. The two stage amplifier circuit has two transistors, connected in CE configuration and a common power supply VCC is used. The potential divider network R1 and R2 and the resistor Re form the biasing and stabilization network. The emitter by-pass capacitor Ce offers a low reactance path to the signal.
The resistor RL is used as a load impedance. The input capacitor Cin present at the initial stage of the amplifier couples AC signal to the base of the transistor. The capacitor CC is the coupling capacitor that connects two stages and prevents DC interference between the stages and controls the shift of operating point. The figure below shows the circuit diagram of RC coupled amplifier.
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