CGS35 1.3 wiring layout

roman_f

1) Anyone can provide a wiring layout for CGS35 PCB 1.3?
the website is for the older design

2) What should i do to make a CV input for resonance?

thank you

andrewF · Posted: Fri Sep 02, 2011 9:56 am Post subject:

Hi
The wiring diagram on Ken's page is for vers 1.3

Posted Image, might have been reduced in size. Click Image to view fullscreen.

There is another thread on adding VC resonance. Not sure if anybody has actually done it. Probably would involve either a vactrol, OTA or a FET as a variable resistor.
Resonance on these filters is quite excitable so whatever method used would have to be quite precise.

roman_f · Posted: Sun Sep 04, 2011 8:22 am Post subject:

thank you andrew
it seems that ken has updated his page

any tips about the trimpot? how it should be trimmed?

andrewF · Posted: Sun Sep 04, 2011 4:48 pm Post subject:

roman_f · Posted: Sun Sep 04, 2011 4:52 pm Post subject:

yes, i have already figured out "0-5" issue today while testing the pcb
i will try changing the resistor and measure the voltage at centre pin tomorrow
thanks again for the tip!