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Circuits designed by David Johnson, P.E.
Last Updated on: Wednesday, April 28, 2010 03:53 PM

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 Voltage Controlled Oscillators (VCO)

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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)

Master Schematic Category List  -  David A. Johnson, P.E.
Voltage Controlled Oscillators (VCO)
 
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