[sdiy] CV-vactrol circuit

mskala at ansuz.sooke.bc.ca mskala at ansuz.sooke.bc.ca
Fri Jul 3 20:43:36 CEST 2015

> mutual respect.  However, general vactrol circuit schematics have been in
> public circulation for so long that I doubt that anyone has a compelling
> moral claim to them.

I think it's unlikely that there'd be any real money in IP rights to a
vactrol circuit today, even with a current patent.  They're banned in a
lot of places, especially when used in commercial products, and they're
hard to find and expensive even where not banned.

Design a circuit with modern components that does exactly what a vactrol
did, and that would be worth some money... but some of your customer base
will convince themselves it doesn't sound the same, especially if it
sounds the same.

Matthew Skala
mskala at ansuz.sooke.bc.ca                 People before principles.

More information about the Synth-diy mailing list