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

[rfahl at pdx.edu]

The serge VCA in the shootout is a very early design that was replaced with a 4
transistor core, a design patented by David Blackmer of dbx fame.  EDN has a
nice little article on it at:

http://www.edn.com/article/CA236413.html

See figure 3 to get an idea of what the core looks like.

RF.



Quoting James Coplin <moog at qwest.net>:

> > 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
>
>
>
>