Draw the TRF receiver block diagram and explain its working. 

1 Answer

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Explanation:- 1. TRF receivers are simple and having high sensitivity. The AM transmission takes place in MW band and SW band. MW frequency range is 540KHz to 1640KHz. 2. The receiving antenna receives and collect signals from various transmitting stations. 3. 1 st and 2nd RF amplifiers are tuned simultaneously to select and amplify the desired signal and reject all other signals. 4. Ganged tuning means simultaneous tuning of tuned circuits in all the RF amplifier stages using gang capacitor. 5. The detector is used to demodulate the amplified signal that means it converts modulated signal into original modulating signal. 6. The detected signal is amplified to a adequate power level to drive the loudspeaker. 7. The loudspeaker converts electrical signal into original sound information.

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