Ceramic filter radio amplifier circuit diagram
Source: InternetPublisher:zht24 Keywords: radio circuit diagram ceramic filter Updated: 2020/08/05
The figure shows the application of two-terminal and three-terminal ceramic filters in the amplifier circuit of AM semiconductor radio . Ceramic filters B1 and B2 are used for 465kHz IF bypass, and B1 is used for IF coupling. B1 uses a narrow-band filter, which is connected in parallel to the emitter resistor of VT1 to help eliminate interference and noise. MA is a wide-band filter, which is beneficial to improving the sound quality of the radio.
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