You may wish to look at using a "Varactor" (Voltage controlled capacitor) http://forum.allaboutcircuits.com/th...pacitor.48678/ The voltage applied would indicate the frequency.
You may wish to look at using a "Varactor" (Voltage controlled capacitor) http://forum.allaboutcircuits.com/th...pacitor.48678/ The voltage applied would indicate the frequency.
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