[sdiy] AN299 and all that !

[Paul Maddox]

Pete,

> new subscriber here ! - just re-kindling my interests in building a
Modular
> - which began over twenty years ago - but which still haven't come to
> fruition ..!. Maybe this time. Anyone remember a Babani book of
sysnthesiser
> projects from about 20 years ago by a certain M.K Berry ? (thats why my
> stuff got shelved !!)

yep, I got that one :-)

> I'm fairly new to the Web DIY synth resources - there does seem to be some
> really excellent material out there, which is great news in a world where
> analogue design is ever more marginalised.

more of it now than 7 years ago when I started, good to see!

> At my last attempt , I knocked up something based on the Nat Semi AN299
VCO
> - had a lot of trouble with the integrator reset circuit ( that 'SCR'-like
> thing). Did anyone ever get that to work reliably ? Got a few ideas of my
> own I'll be trying soon.

This was my FIRST VCO!!
Built on my cooker in my flat, worked a treat, had a usefull range of about
4 octaves though :-(
The joints around the double transistor I found had to be REALLY good, else
it wouldn't fire..

> Whats best ?  - heated CA3046 / heated MAT04 / LM394 or SSM with Q81 ??

personally I prefer DCOs (Http://www.Modulus.wavesynth.com/Monowave/ ) but
then Im in the minority here :-)

Paul
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