Yahoo Groups archive

Cgs synth

Index last updated: 2026-04-28 23:16 UTC

Message

Re: CGS114 Not working correctly

2015-06-12 by Jorgen Van De Burgt

It's 3904 and 3906s all round as specified. I used a component kit from Elby.

Coincidentally, the one problematic jack is the only different one from all the others. Still, that's not what is giving me the other issues...



Op 12 jun. 2015 om 13:51 heeft Ken Stone otherunicorn@... [cgs_synth] <cgs_synth@yahoogroups.com> het volgende geschreven:

It is almost certainly a construction error on both counts. It's hard for me to say what is going on when I have never seen the fault condition myself. "Transistors all in backwards" worries me because you did not specify the type of transistors you are using. They may not need to be in backwards. Correctly built, the circuit should not be able to short out a power rail.

On Fri, Jun 12, 2015 at 9:03 PM, jorgen.vandeburgt@... [cgs_synth] <cgs_synth@yahoogroups.com> wrote:

Ok this is interesting. Problem #2 persists after I disconnect the wire from D to the problematic jack. Since only the ground line is connected, what's going on? None of the other jacks that are on the same ground line show this behaviour :S


Any input on the lack of oscillating BTW?




--
Ken Stone otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.