modified 9 years ago

Tim Escobedo QD VCF in Chaotic mode

01:18:26

Tim Escobedo designed this voltage controlled frequency modulator by putting a tweakable, slightly unbalanced Twin-T notch filter in the feedback path of an Op-Amp. Unexpectedly, the thing, when suitably tweaked and fed a square wave displays chaotic behaviour. @hurz : slightly less boring than the last one, hopefully 😃

published 9 years ago

hurz

9 years ago

I dont think it is chaotic. Check it at a slower simulation speed and wait 3 or 4 cycles http://everycircuit.com/circuit/5646584137646080

emogenet

9 years ago

@hurz : to be fair, I havent gotten around to building this, but some people have : http://www.sdiy.org/pinky/chaos/chaos.html

emogenet

9 years ago

Ian Fritz has a great page on chatic osc http://ijfritz.byethost4.com/Chaos/ch_over.htm?i=1

emogenet

9 years ago

Also: I ran your sim. Seems chaotic to me. It's just that the trace vanishes too quickly to show the density of the phase space trajectory.

HexOpus

8 years ago

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