Modular Synth Panels

Sounds good! : )

The SEM VCF uses just one op-amp and four resistors, the pot having the 
CV straight to one side of the pot, the inverted CV to the other. Maybe 
a buffer on the output would be good, but that's still pretty darn 
tiny. NanoPolarizer?
Doesn't Peter Grenader's Gizmotron do that, though?
Are those still available?

Scott Deyo
The Bridechamber
contact@...
http://www.bridechamber.com
Jealous Edison Record Kompany
http://www.jealousedison.com


On Jul 8, 2008, at 6:41 PM, Samppa Tolvanen wrote:

> Hi all,
>
>  On Sun, Jul 6, 2008 at 7:28 PM, Scott Deyo <contact@...> 
> wrote:
>  > I believe the prob w/ normal center-detent pots, is that w/ 20% 
> typical pot
>  > tolerance, you need to place a trimmer in there, to make sure 
> center is
>  > really 'off'.
>  > With a center tap to ground, the center is 'bigger', and should 
> definitely
>  > be 'off'.
>  > Or something.
>
>  Amen!
>
>  > Someone else may not design circuits around these pots, but they'd 
> work well
>  > in my optic cv processor, and an other modules down the line. I'll 
> hog 'em
>  > to myself!
>  > ; )
>  >
>
>  I might have to take some words back.. Ok, 3 opamps (1 quad with the
>  infamous "Ground Follower"), 2 caps, 2 resistors, about 1 square inch
>  of PCB and this pot - You'll have an universal bipolar attenuator,
>  that follows modular I/O impedance requirements and can be fitted
>  nearly everywhere.. would that be next Bridechamber "module"? ;)
>
>  If someone just forgets to use this wonderful toy in the design.. just
>  add it. Maybe some panel designs might also come with +/-5 scales and
>  this Wonderful Gadget :D As seen on TvShop: "Finally I can leave My
>  VCOs bipolar modulation input connected, without having to hunt down
>  why Pitch wanderers, Thanks to this perfect solution! Order Now.."
>
>  Samppa
>  
>