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Cgs synth

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Message

Re: CGS48 VCO 0.4 PWM mod

2007-05-17 by sasami@hotkey.net.au

Hi Mike - the 100k is there to protect the op-amp input in the event you
accidently plug two outputs together. Chances are you would survive without
the 100k, but these days I like to make things as bullet proof as I can.

Ken

>Hi Ken - yeh tried the mod and voila all problems solved. You wrote
>
>Cut the track between Pin 5 of the TL072 in the bottom right corner.
>Jumper pin 5 to the Saw AC output terminal via a 100k
>
>I just used a jumper - is the 100k necessary between the saw AC output and
pin 5 - it is not on the schematic. I have not checked it with a scope yet
but it sounds ok without the 100k
>
>thanks for looking into it.
>
>cheers
>Mike
>
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>[Non-text portions of this message have been removed]
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>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
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>
_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

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