Adjustable Vfo Temperature Compensator Circuit

Posted on Jan 5, 2013

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
Click here to download the full size of the above Circuit.

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

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