[sdiy] (diy) MS 20 Ringmod

[modlar at gmx.de]

> I don't understand; are you saying that the original four NAND gate
> circuit is not an XOR?  It's a classic XOR implementation.
Answered by Rene already !
> 
> And I don't understand the point of your extra circuitry.  Why square
> up inputs that are already square?  
Because there are VCO's which give Saw waves, and/or Triangular Waves and/or
also Sine waves. So the input is NOT allways a square, and I want to feed
the
XOR with a Square with 50:50 relation, if possible (thats also the reason
for the 
trimpot, as you can easily read in the schematic).

>Why buffer the output?
Its not only a buffer, its for centering the ringmod output around 0V, thats
a
better input signal for most of the VCF's I use. Thats the reason for the
second
trimpot, BTW.
  
>Why the trimpots?  
------

>Why invert the output?  
Why not ? Do you hear a difference between a normal or an inverted ringmod
output ? You must be lucky, if !!!

Jörg


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