Tube Challenge!!

Paul Perry pfperry at melbpc.org.au
Sat Nov 20 22:39:07 CET 1999


At 02:27 PM 20/11/99 -0500, MARK media at mail1wrote:

>The bugbear of solid-state analog VCO design is building a stable
>exponential converter.  Can you build an exponential converter out of
>tubes?? 
 
.cerainly you can.
This is treated in any book on analog computer design.
See the books by G.Korn for more than you want to know.

Everything in a modular synth existed to some degree before Moog.
His contribution was standardising everything, and making it
voltage controlled in a matching way.

I have heard that it was john Simonton at PAiA who first called them
'analog synths' after the analog computers. The transistorised 
analog computers of the day look like a modular synthesist's wet dream.
paul perry Melbourne Australia




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