Fet VCA Elliott Sound Products.

121

01:59:28

Green are control voltage blue are output and orange are input. Change the pot for make the CV go higher than the FET VTO.

published 7 years ago

eekee

7 years ago

Make the control voltage low level 400mV, there's no point going lower. In fact there's probably no point going lower than the threshold (VTO) of the FET. It's easier to see if you speed up the simulation, slow down the control voltage and make it more of a triangle wave, and make the output a brighter color. (Try width=0% rise=fall =40%.) Response seems to be logarithmic, which is cool.

eekee

7 years ago

I made a volume control out of it: http://everycircuit.com/circuit/6254412367659008

jimithiesen

7 years ago

@eekee thx for your comments and yes of course there is no point of goin under the VTO of the FET. The idea are to rectify the signal and send that to the FET gate and you have a audio compressor/limiter.

jimithiesen

7 years ago

I made an rectifier as example.

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