Single valve direct radio circuit diagram

Published:2011/3/30 22:14:00 Author:Ecco | Keyword: Single valve , direct radio | From:SeekIC

Input tuning loop: It is consisted of magnetic aerial T and 2 changeable capacitance, and its function is receiving electromagnetic wave and choosing broadcasting station. High frequency amplification and demodulation: The TA7642 is a miniature integrated circuit, the shape is similar to the triode which is shown as chart. There are 10 triodes, including third stage high amplifier, one stage demodulation and one stage. Low frequency amplification: The low frequency amplification is completed by two triode VT1, VT2 to hit the speaker of collecting electrode connecting, which converts the low frequency current as sound, the potential machine RP is used as controlling volume.



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