[sdiy] Buchla Dodecamodule docs?

Paul Perry pfperry at melbpc.org.au
Thu Nov 11 07:40:28 CET 2010


I don't know what kind of random voltage generator is in there, but if
it is based on a zener diode, there is always a chance that the zener is
going open circuit when heated. I have seen zeners go open when hot before.

paul perry melbourne australia

----- Original Message ----- 
From: "Byron G. Jacquot" > Howdy all,
>
> A friend has a Buchla electronic music box.  He brought it to me for a 
> little TLC.  I've been able to suss out and solve a few issues, but I've 
> got one remaining that's not been so forthcoming:  The Random Voltage 
> Source quits working as the machine warms up.  It runs fine when it's 
> cool, but stalls after a few minutes.
>
> I've seen Magnus' schematic collection, but there's no 212.  Does anyone 
> have any documentation for this guy, or any idea where I should be 
> looking?
>
> Thanks,
>
> Byron Jacquot
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> Synth-diy at dropmix.xs4all.nl
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