Squelch Circuit & Automatic gain control of the AM receiver
Q. Squelch circuit is- Published on 13 Oct 15a. Suppresses output audio
b. Works when there is insufficient desired input signal
c. Is used to suppress the unwanted channel noise when there is no reception by the receiver
d. All of the above
ANSWER: All of the above
Squelch circuit suppresses the output audio when there is insufficient desired input signal at the receiver. The circuit is used to suppress the unwanted channel noise when there is no reception by the receiver. Squelch circuits may be used in wireless microphones stay away from replicating the noise when enough signal is not received. Regulating squelch is provided in some systems for the receiver.
