[sdiy] Serge VCA, was LT1228 / 13700 for VCA

[jhaible at debitel.net]

No, I don't think Serge used this.

Serge made some comments in Electronotes on the LM13600 and CA3280 when these 
chips were new (!). (I think Ian has posted a link to this article recently.)

Much later, when I was browsing thru old EN issues, I found Serge's comments 
and tried one of his ideas to improove the linearity of the LM13600. It turned 
out to be no improovement, but actually made linearity worse. Because the 
original idea was Serge's and not mine, and I like to give credit to my 
sources, this circuit became known as "Serge VCA idea". Apparently the name 
stuck even after it turned out to be not such a good idea. Please note that 
Jörgen Bergfors has set quotation marks around the word "Serge".

Hope this helps to clarify,

JH.



> > Our own Jörgen Bergfors has a rather interesting "VCA Shootout" page
> > http://hem.bredband.net/bersyn/vca.htm
> 
> I noticed that on his reviews, the Serge recommended VCA got extremely poor
> marks.  Does anyone know if this is the design that is actually used in the
> Serge modulars or just one that was proposed and printed in Electronotes by
> Serge? Thanks!
> 
> James
> 
> 
> 
> 
> 




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