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Circuits designed by David Johnson, P.E.
Last Updated on: Wednesday, November 30, 2011 01:58 PM

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More Voltage Controlled Oscillators (VCO); 
Voltage to Frequency Converter Circuits

40KHz Voltage to Frequency Converter


This circuit was designed to frequency modulate a 40KHz carrier, using human voice frequencies.  A common flip/flop is used at the core of the circuit.
 

Click on Drawing Below to view PDF version of Schematic

Circuit VCO for Voice Audio FM designed by David Johnson, P.E. (Dec 12, 2004)

More  Voltage Controlled Oscillators (VCO);  
Voltage to Frequency Converter Circuits

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