triangle VCOs and Buchla designs

[mark verbos]

buchla stuff uses them like crazy. I saw a serge board or two with them as well.
i think they were just the generic NPN of that time. At least to Don and
Serge....

mark

Alan Podjursky wrote:

> At 04:22 AM 11/11/00 +0100, Mark Verbos wrote:
> >i also just found a reference to the fact that a 3080 can ONLY use a PNP
> >based exponential converter. the Buchla actually uses NPN. So this limitation
> >is only in the 3080 not the triangle design in general. I think I will try to
> >use an SSM matched PNP and 2 2n3565 in there and see how it goes. The
> >original used an Analog Devices AD821 and an AD811 as the exponential
> >converter. That is a little too  obsolete for my taste, but i guess a 2210
> >and a 2220 will work. right?
>
> I've been meaning to ask this for a week or so -- I've got about twenty or
> so 2N3565's lying around from school (asked nicely, and got seventh form
> electronics boards from last year). What are they useful for? What popular
> 'synth' tranny's can I use them instead of?
>
> -alanp

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mark verbos

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