the relaxation oscillation circuit with 300MHZ frequency modulation

Published:2011/9/8 6:16:00 Author:Ariel Wang | Keyword: relaxation oscillation , 300MHZ, frequency modulation | From:SeekIC

The oscillation circuit signals come from UA2 or UA1.LK is one turn within 300MHZ.L' is about 10% of L's turns.You can do frequency fine adjustment to UD using varactor CD.And you can do frequency modulation to UNF.If you want to choose the capacitor CS,you can refer to the frequency range and the varactor based on the frequency offset required.The capacitor C in oscillating circuit can be chosen as the way above.



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