CRYSTAL_CONTROLLED_AUDIO_GENERATOR

Published:2009/7/21 2:06:00 Author:Jessie | From:SeekIC

In this circuit, two signals from crystal oscillators operating at nearly the same frequency are mixed in Q2 and the audio difference frequency is used. C3 is a small air padder capacitor of 3 to 40 pF and can be fitted with a dial that is calibrated in the audio frequency producedi C2 is used for an initial calibration of the fixed oscillator to exactly 10.000 MHz.



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