Cgs synth

i should check the archives ....something that i didnt think of ...i
am sure that many of my unanswered questions are there ... i am a bit
new to the DIY scene so pardon me if i am oblivious


On Fri, 25 Mar 2005 21:31:09 -0500, Richard Brewster
<pugix@...> wrote:

> The sawtooth is +/-5V (10V p-p) with the mod I made. I found this old
> post in the archives:
>
> The sawtooth buffer amp shows a 330K feedback resistor and a 240K bias
> on the schematic. I inserted pots and adjusted to get a +/-5V sawtooth.
> The values turned out to be exactly 200K / 600K, just like the ASM-1.
> This is also just what you would expect to convert the 0-5V signal out
> of the CA3140. Double the voltage (200K/100K), then offset the 0 to -10V
> result back to +/-5.
>
> -Richard
>
> charlesosthelder wrote:
>
> >--- In cgs_synth@yahoogroups.com, dustin sedlacek
> ><dustin.sedlacek@g...> wrote:
> >
> >
> >>speaking of the VCO - anyone made any mods to it ?
> >>Dustin
> >>
> >>
> >
> >Check the archives, Dustin. Both Ken and Richard
> >Brewster have made some suggestions.
> >
> >I'll be using Richard's resistor mod for a sawtooth output centered
> >on zero volts. Mostly, I'll be removing things - the second CV
> >processor input, the extra V/oct ins, the 0-10v sine - but keeping
> >everything else.
> >
> >I have another question, though. Is the sawtooth only 5Vp-p with
> >Richard's resistor mods?
> >
> >Thanks!
> >
> >Chub
> >
> >
> >
> >
> >
> >
> >See the following URLS for the CGS Modular Synth home page:
> >Main: http://www.cgs.synth.net/
> >Secondary: http://otherunicorn.0catch.com/synth/
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
> See the following URLS for the CGS Modular Synth home page:
> Main: http://www.cgs.synth.net/
> Secondary: http://otherunicorn.0catch.com/synth/
>
>
>
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--
Dustin