VOLTAGE CONTROLLED OSCILLATOR

 

Schematic:

 

 

 

 

Notes:

 

The VCO circuit, which has a nonlinear transfer characteristic, will operate satisfactorily up to 200 kHz. The VCO input range is effective from 1/3 Vcc to Vcc - 2 V, with the highest control voltage producing the lowest output frequency.

 

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