Explain briefly the following terms used in communication system: (i) Transducer
Explain briefly the following terms used in communication system:
(i) Transducer
(ii) Repeater
(iii) Amplification
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(i) Transducer: Any device which converts one form of energy into another.
(ii) Repeater: It is a combination of a receiver and a transmitter. A repeater, picks up the signal from the transmitter, amplifies and retransmits it to receiver sometimes with a change in carrier frequency.
(iii) Amplification: It is the process of increasing the amplitude of a signal using an electronic circuit. (i.e., amplifier). It is necessary to compensate for attenuation of signal in communication system.
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