[sdiy] little phatty question

[Steve Ridley]

> I have heard about such circuits, but I've never actually seen a schematic or had a chance to hear one in 
> action.  I am very curious as to how it sounds.  I fear that it may not be a very dramatic effect, especially
> compared to modulating the pitch of a synced VCO, but who knows?  I'm guessing that these circuits use some 
> kind of comparator circuit that is similar to our typical saw-to-pulse converter, with the pulse output then 
> turned into a fast sync pulse.

The Moog 921 had variable position "waveform clamping", which looks like the same sort of thing.

> If anyone has a circuit for one of these, I'd love to see it.  

Moog Modular Service manual has the basic 921/921B board schematic, but there appears to have been a
small sub-board in the 921 which has some of the clamping circuitry.  Can't see that in the manual. 



Steve