VOLTAGE_TUNED_HARTLEY_JFET_VFO

Published:2009/7/21 2:15:00 Author:Jessie | From:SeekIC

This voltage-tuned JFET Hartley oscillator can be made to sweep its entire frequency range by applying a sawtooth waveform that rises from 0 to 12 V to the Vt input. In this circuit, a varactor is used for the tuning element instead of an air-core inductor. The frequency range is around 5 MHz.



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