[sdiy] Triangle to saw conversion in triangle-core VCOs

René Schmitz synth at schmitzbits.de
Wed Nov 13 14:31:48 CET 2019

Hi Florian,

On 13.11.2019 14:09, Florian Anwander wrote:
> Hello,
> can somebody tell me how the triangle to saw conversion in 
> triangle-core-vcos works?
> I am thinking especially about the CEM3340. In the datasheets 
> blockdiagram the converter is a kind of a blackbox with an comparator 
> outside that controls something in the box, but that is - at least for 
> me - not enough to infer from it the detailled function of the converter.

Flip the sign on the backwards slope.

/\/\ -> ////

Then your frequency is an octave up, so
you then add a squarewave:

//// + _-_- -> / /
               / /

That "sign-flip and add" squarewave is typically also coming straight 
from the core as that is what is integrated.


synth at schmitzbits.de

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