[sdiy] Rene Schmitz CD4007 VCF Problem w/ Resonance

[René Schmitz]

Hi Bill!

>I just finished building rene's cd4007 vcf.. it sounds pretty good to me.. 
>i'm happy with it..  one problem, if it turn the resonance up all the way, 
>it stalls..  this may be because of the pot i used.. all i had were 100k..  
>how can i fix this?   anyone, anyone? ?

You should raise the resistor which is in series with the cap, to delimit the maximum Q to safe values. 

For those who haven't seen the schemo: http://www.uni-bonn.de/~uzs159/vcf4007s.gif
I merely built it on breadboard once, so I don't have a version built here. Also thats the reason why 
it isn't properly linked from my homepage.

Cheers,
 René

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