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Voltage-Tuned Vhf Oscillator

2016-08-22 06:30  
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This VHF VCO circuit is suitable for 30 to 200 MHz. Q1 can be replaced by a 2N3563 for operation above 100 MHz
Voltage-Tuned Vhf Oscillator

. LI is chosen to resonate to the desired frequency with the varactor capacitance of 40 pF. Other varactors can be substituted or two back-to-back varactors can be used for better linearity, depending on the application.

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