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Dave's Circuits
Circuits designed by David Johnson, P.E.

Master Category List - Dave's Circuits
Last Updated on: Monday, April 21, 2008 04:18 AM

Astable Oscillators Circuits    Audio Oscillators    Square Wave Oscillators
 Voltage Controlled Oscillators (VCO)
 
CMOS SCHMITT TRIGGER IC MAKES VCO
By changing the supply voltage fed to a classic 4584 Schmitt trigger type oscillator, the oscillator frequency can be changed over a range of 50:1.  A 74HCU04 inverter is used at the output of the 4584 to maintain a constant TTL logic level signal.

Click on Drawing Below to view PDF version of Schematic

4548 Voltage Control Oscillator designed by Dave Johnson, P.E. (March 12, 2002)

Astable Oscillators Circuits    Audio Oscillators    Square Wave Oscillators
 Voltage Controlled Oscillators (VCO)
Master Schematic Category List - David A. Johnson, P.E.
 

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