Radio intermediate frequency amplifier circuit

Published:2011/6/13 8:20:00 Author:Christina | Keyword: Radio, intermediate frequency, amplifier | From:SeekIC

The intermediate frequency amplifier circuit of the general semiconductor radio is as shown. The 465kHz intermediate frequency signal which is produced by the frequency changing circuit is sent to the VT2 by the secondary stage of the intermediate frequency transformer T2 to be amplified, the amplification signal is sent to VT3 by the T3 intermediate frequency transformer to be amplified again, then it is sent to the wave detector by the T4 intermediate frequency transformer to be detected, the detected signal is sent to the low frequency amplification stage to be amplified. The CN is the neutralizing capacitance of the circuit that can be used to inhibit the intermediate frequency parasitic oscillation. Figure The radio intermediate frequency amplifier circuit



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