Cgs synth

Wow, spot on! I feel dumb for not seeing it before. 10k resistor on IC5b was not connected.

Thank you so much!

--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>
> Also check the input resistors along this chain. A too low a value or a
> short would also have this effect.
> Ken
>
> >CA3080 is the same chip as LM3080.
> >
> >You have a problem with a feedback resistor somewhere. One of them is too
> >high a value, or has a bad joint. It could be the 100k around IC5a, any of
> >the 10ks on IC5b,c,d, and possibly, but not likely, the 10k around IC4c. I
> >would start with the 100k and work backwards along the chain.
> >
> >Ken
> >
> >>The main folder section triangle and pulse outputs are identical. They are
> >both outputting what I think is a 'squared' output. I don't have an
> >oscilloscope, but with a fixed voltage or an lfo on the triangle input, the
> >output switches between +/- 15 volts, nothing in between.
> >>
> >>The pulse width modulation section doesn't effect the output. The offset
> >and folds cv sections are working correctly, which is what tricked me at
> >first. The output voltage just switches between +/- 15 volts, but it does
> >fold the original waveform, so that switching occurs at different points of
> >the waveform. if that makes any sense
> >
> >_______________________________________________________________________
> >Ken Stone sasami@... otherunicorn@...
> >Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> >Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
> >
> >
> >
> >------------------------------------
> >
> >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/>
>