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Adjustable Vfo Temperature Compensator Circuit

2017-09-02 06:23  
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Use of a differential capacitor allows temperature compensation of LC circuit using an NFO and N1500 ceramic. C6 is a differential capacitor that has two stators and one common rotor. When one capacitance (stator) is maximum, the other is minimum.
Adjustable Vfo Temperature Compensator Circuit

LI, CI, C2, and C3 are tuning, trimming, and fixed capacitors, respectively.

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