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Cgs synth

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Message

Re: CGS13 Gated Comparator troubleshooting advice . .

2011-06-21 by sasami@hotkey.net.au

>1 - Whenever the CV "SENS" knob is turned counter clockwise below 2-
>oclock.... the "COMP OUT" LED turns on and a voltage is produced at
>the "COMP OUT" jack.

You are merely setting the detection point below the range of the incoming
signal (or 0V if there is not signal). It is not a fault.

>2 - If an external clock is patched into the "CLOCK" input and you
>turn the CV "SENS" knob below 2-oclock.... then each of the 8x stages
>will light in turn sequentially following the clock pulse.

Not surprising. See above. You are simply clocking a High into all the stages.

>3 - If you create a "Loop Sequence".... then whenever "Stage 8" lights
>up - the "COMP OUT" light/jack will light up along with it (at the
>same time)

Correct, as the COMP OUT is now connected to Stage 8, and mimmicing it.

>SO basically COMP OUT & Stage 8 seemed linked somehow - and the CV
>SENS knob seem too sensitive (100k lin)

If you want to change the sense, increase the value of the resistor between
the CCW end of the pot and the negative rail.
_______________________________________________________________________
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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