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

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Last Updated on:  06/17/2009 03:29:15 PM

Astable Oscillators Circuits    Audio Oscillators   
Square Wave Oscillators   Voltage Controlled Oscillators (VCO)

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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.

Circuit 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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