[sdiy] Rene Schmitz's CV BBD clock circuit

René Schmitz uzs159 at uni-bonn.de
Sat Dec 13 12:12:47 CET 2008


Hi Karl and all,

Karl Ekdahl schrieb:

> Due to how the paia is built i'm powering it the standard +15V / GND
> instead of the said -15 / GND, now this works and all but it seems to
> mess up the CV control. Right now i've got to bias the two input
> diodes to the positive supply via 3.3K resistor to make the input
> work, and even then input range is really small. I'm using two
> circuits since the paia has a dual chorus and on one of the circuits
> i've gotta use a 4.7K bias resistor instead and the CV range is
> *really* tiny.

You moved the voltages all up by 15V, so that you'd need 15 to 30V or so 
as a CV. One thing you could try is to reverse the diodes, and work with 
a negative CV.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159



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