Advantages of automatic gain control and AM Wave

Q.  Automatic gain control is
- Published on 13 Oct 15

a. Provides controlled signal amplitude at the output
b. Adjusts the input to output gain to a suitable value
c. Is used in AM radio receiver
d. All of the above

ANSWER: All of the above
 
Automatic gain control provides controlled signal amplitude at the output even if there are amplitude variations at the input. This controlled output adjusts the input to output gain to a suitable value so that the system may work properly even for wide range of variations at the input.

The AGC is used in AM radio receivers for controlling the weak and strong sound signals.

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