Do It Yourself
My Modular Synth


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I let you look at Ian Fritz website to understand the circuit. As I say earlier I just did some modifications. If you have some difficulties with your VCA you can go back to the original with 2 capacitors instead of the 2 diodes to eliminate the DC components.


The input is a -5V+5V triangle. PW and Timbre play on the double pulse width and height. Mix is here to input some part of the triangle and this allows to decrease the amplitude of the fundamental harmonic.

A video is available in the download section. PW and Timbre could be modulate with LFO or envelop.


There is one trimmer to adjust the final offset.


Drawing :           

Pcb :                  

Layout :             

Bom :               

Creation date : 2014.07.19 - 19:06
Last update : 2014.07.20 - 12:37
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