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Explain briefly the following terms used in communication system : (i) Transducer (ii) Repeater (iii) Amplification |
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Answer» (i) Transducer : Any device that converts one form of energy into another can be termed as a transducer. An electrical transducer may be defined as a device that converts some physical variable in the electrical signals. (ii) Repeater : A repeater is a combination of a receiver and a transmitter. A repeater picks up the signal from the transmitter, amplifies and retransmits it to the receivers sometimes with a change in carrier frequency. (iii) Amplification : It is the process of increasing the amplitude of a signal using an electronic circuit called the amplifier. Amplification is done at a place between the source and the destination. |
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