Describe the operation of double tuned amplifier with the help of neat circuit diagram and mention its applications.

Describe the operation of double tuned amplifier with the help of neat circuit diagram and mention its applications.
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1 Answer

Answer :

Circuit diagram:

image

Operation: 

*The signal to be amplified is applied at the input terminal through the coupling capacitor CC 

*The resonant frequency of the tuned circuit L1 C1 is made equal to that of tuned circuit L2 C2 

*Under these conditions the tuned circuit offers avery high impedance to the input signal. As a result of this, a large output appears across the tuned circuit L1C1which is inductively coupled to the L2C2 tuned circuit.


Applications:

(i) Radio and T .V broadcasting as tuning circuit.

(ii) Wireless communication system.

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