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CGS48 VCO VER 1.0 WIRING DIAGRAM

CGS48 VCO VER 1.0 WIRING DIAGRAM

2010-08-08 by ALFREDO

Please guys, for many weeks I´m loocking for the wiring diagram and there´s nothing in the net, I don´t know how to read the schematics and theres nothing about in the cgs web. Mister Ken Stone told my : ``It is something I intend to do in the near future´´, but there´s nothing at the moment, so I have two populated vco boards and front pannels waiting.
Please, Any of you have that wiring diagram?
Thanks a lot mates.
Alfredo.

Re: CGS48 VCO VER 1.0 WIRING DIAGRAM

2010-08-09 by sasami@hotkey.net.au

You may like to try http://www.muffwiggler.com/forum/viewforum.php?f=17
the DIY section of MuffWiggler too.

A partial diagram is up on my site.
Show quoted textHide quoted text
>Please guys, for many weeks I´m loocking for the wiring diagram and there´s
nothing in the net, I don´t know how to read the schematics and theres
nothing about in the cgs web. Mister Ken Stone told my : ``It is something I
intend to do in the near future´´, but there´s nothing at the moment, so I
have two populated vco boards and front pannels waiting.
>Please, Any of you have that wiring diagram?
>Thanks a lot mates.
>Alfredo.
>
>
>
>
>------------------------------------
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>Yahoo! Groups Links
>
>
>
>
_______________________________________________________________________
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

Re: CGS48 VCO VER 1.0 WIRING DIAGRAM

2010-08-10 by ALFREDO

Hello, thanks for your answer.
I implemented the partial diagran in one of my boards and the sound of the sine is very low compared with square and saw waves out, there's no sound at the saw to sine out.
Any idea what´s wrong?
Thanks a lot.

Re: CGS48 VCO VER 1.0 WIRING DIAGRAM

2010-08-10 by sasami@hotkey.net.au

Sine waves by their very nature will sound a lot quieter. They don't have as
much harmonic content.

The Saw to Sine doesn't have any initial voltage being sent to it from that
partial diagram, so it is too early to panic.

Ken
Show quoted textHide quoted text
>Hello, thanks for your answer.
>I implemented the partial diagran in one of my boards and the sound of the
sine is very low compared with square and saw waves out, there's no sound at
the saw to sine out.
>Any idea what´s wrong?
>Thanks a lot.
>
>
>
>------------------------------------
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>Yahoo! Groups Links
>
>
>
>
_______________________________________________________________________
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

Re: CGS48 VCO VER 1.0 WIRING DIAGRAM

2010-08-10 by ALFREDO

Hi Mister Ken, many thanks for your pront answer and yes is too early to panic. The first chapter of the wiring diagram it´s done and we are ready and impatient waiting for next chapter of your wonderful VCO.
Thanks a lot Sir.
Best regards.
Alfredo.

Re: CGS48 VCO VER 1.0 WIRING DIAGRAM

2010-08-12 by ALFREDO

Hi Ken, thanks for second wiring diagram.
I implemented everithing included in that two diagrames and there's no sound at the saw to sine out and S to S shape pot doesn´t do nothing.
I think everithing is correctly wired and all components have the correct value etc etc...
Any other diagran left (third) to up at your site ?
Any idea what I´m doing wrong or where´s the problem?
Thanks a lot.
Alfredo.

Re: CGS48 VCO VER 1.0 WIRING DIAGRAM

2010-08-12 by sasami@hotkey.net.au

Hi Alfredo,
There is no third diagram.
Check for solder bridges, or an accidental break/lifting of a track from
soldering or wire trimming. Make sure the transistor really is in the right
way. Sometimes the transistor will have a different pin-out to what is
expected, depending on manufacturer. If you have a transistor tester, use
that to work out which lead is which. The highest reading will be when the
transistor is the correct way around. You'd need to remove it from the board
to do this - or test an identical one from the same batch.
The sine circuit and the sine to saw circuit are almost the same, so if the
sine output is working, you will have a reference.
Using an amplifier with a 100k resistor in series with the input, probe
around that part of the circuit to see where the signal stops. The shield of
the lead from the amp will need to be connected to 0V of the power supply of
the VCO, and make sure the amp is set at it's LOWEST volume when you start.
Ken
Show quoted textHide quoted text
>Hi Ken, thanks for second wiring diagram.
>I implemented everithing included in that two diagrames and there's no
sound at the saw to sine out and S to S shape pot doesn´t do nothing.
>I think everithing is correctly wired and all components have the correct
value etc etc...
>Any other diagran left (third) to up at your site ?
>Any idea what I´m doing wrong or where´s the problem?
>Thanks a lot.
>Alfredo.
>
>
>
>
>
>------------------------------------
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>Yahoo! Groups Links
>
>
>
>
_______________________________________________________________________
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

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