AW: tri2saw (was:commercial synth circuits)

[Tim Cockram]

In message <1BF5E20E0C4DD111BBAB00805FE2D58297A780 at nbgm336a.nbgm.siemens
.de>, Haible Juergen <Juergen.Haible at nbgm.siemens.de> writes
>
>       >The Aries modular used this method quite succesfully.
>
>I knew it *must* have been done before (;->).
>What does their expo converter look like ?
>
>JH.
>
Aries use what appears to be the Dynasyn DY-1210-P Temperature
compensated module which consists of a NPN transistor (loging element)
with a trad three input tempco potential divider, the collector and
emitter are available at pins.  The emitter is also connected to the
base's of 2 PNP transistors whose collector and emitters are available
at pins.

All of the transistors are matched.........


For more data see electronotes #45 pp16-17

Regards

Tim

-- 
Tim Cockram