[sdiy] VC Lag, was Re: more sh-101 mods?

[john mahoney]

Thanks for the reply, Harry. I've been doing a lot of DIY this weekend -- 
DIY kitchen remodeling, that is. I doubt that my experience with help with
the capacitor / integrator leakage question, but I used both Teflon tape and
plumber's putty to prevent leakage...


I had written:
> > So, how do you make a voltage controlled slew limiter? I really want
> > Harry's Morph Lag
> > (http://www.wiseguysynth.com/larry/schematics/Morph-Lag/Morph-Lag.gif)
> > with voltage control.

Harry wrote:
> The MorphLag relies on the fact that a potentiometer can be used for a
> really good er... potentiometer.

LOL! I take that to mean, "The MorphLag can not easily be made VC-able."


> It is VERY easy to make a lag that works with independant rise / fall
times.

Heck, yeah, just build a MorphLag. ;-)


> Check
> out Jurgen Haible's VC_HADSR schematic....
> ... You can just use the core and delete all the
> control logic. This will have expo (log) response.

Nice idea!


> Another version with voltage control can be hoisted out of  "Muffy III"
hex
> guitar that is still (at last look) at www.wiseguysynth.com (the late
Larry
> Hendry's site - may he be long remembered !). ...

Yes, here's to Larry! And yes, your schemos are there:
    http://www.wiseguysynth.com/larry/guitar.htm

> ... This uses a 3080 in a feedback loop [snip]

Between that and JH's circuit, I should be able to find a solution.
(Meanwhile, the MOTM VC Lag kit keeps calling to me.)
--
john