VCO

278

06:11:36

Nice VCO circuit that do not need any extra diodes or transistors only op-amps.
Voltage source that is set for 8V controls VCO frequency (CV range 0Vmin..15Vmax) and Pot serves as primitive way of changing duty cycle.

published 6 years ago

hurz

6 years ago

i think the main advantage is the output is symetrical, this with a single OpAmp/comparator can also me done as VCO, but not with a nice symetrical output

kiani

6 years ago

Suggest to adf a 100k (or so) across the 22nf, to helo reset cap. http://everycircuit.com/circuit/5412667150565376

hurz

6 years ago

@kiani, the integrator is in a loop and wont have this zero aligement problem. A free running integrator does cause this problem and would need a while to settle

gasboss775

6 years ago

Nice circuit Securure

kiani

6 years ago

@hurz, right i get what you say but somehow it helps the EC stop crashing when and if the 8v dc control voltage is replaced with a varying voltsge such ss sine or sawtooth..

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