VCS and Ringmodulator NEW at CGS :)

Dego · Joined: Apr 22, 2008 Posts: 139 Location: Sweden

http://www.cgs.synth.net/

CGS 67 and CGS 75

andrewF · Posted: Thu Jun 11, 2009 6:08 am Post subject:

blino83 · Joined: Apr 02, 2009 Posts: 11 Location: italy

I don't find any cgs75!!!
Question

Dego · Joined: Apr 22, 2008 Posts: 139 Location: Sweden

a_guy_called_tom · Joined: Jun 21, 2008 Posts: 31 Location: mountains

this is great news, hopefully they will be in stock soon again. I really need a VCS or two.

wmonk · Posted: Wed Jun 17, 2009 10:27 am Post subject:

And there is a page Very Happy

http://www.cgs.synth.net/modules/cgs75_vcs.html
Schematics and BOM are on the page, no pictures of the pcb yet. This is probably one of the coolest designs. Good news for us DIYers! Smile

widdly · Posted: Thu Jun 18, 2009 6:57 pm Post subject:

Whooot!!! I didn't think there would be schematics for this one. Great news.

andrewF · Posted: Fri Jul 10, 2009 2:33 am Post subject:

from the CGS Yahoo group -
re VCS
Ken wrote - "
On the Euro version there is a capacitor that is 2n2, when in the original
designs it was 22n. My mistake. Increasing the corresponding resistor to
220k solved the issue without me ever realising the mistake - I thought it
was due to the higher gain of the transistors used.
This 6 x 2 board has the capacitor correctly marked at 22n BUT the resistor
is still 220k, where it should probably need to be 22k. It is the resistor
connected to the four emitters of the transistor core.

Keep this in mind when assemblin it. There is a spare 22k resistor in the
parts list for this reason."

a_guy_called_tom · Joined: Jun 21, 2008 Posts: 31 Location: mountains

both seem to be in stock now. Nice!

TekniK · Joined: Aug 10, 2008 Posts: 1059

andrewF · Posted: Fri Aug 21, 2009 10:59 am Post subject:

the only issue now is that you should install a 22k resistor in a place marked on the PCB as 220k.

TekniK · Joined: Aug 10, 2008 Posts: 1059