OK here is some more info.
Most people seem to have difficulty with the transistor pin-outs not matching the circuit. I don't think this is the problem here. The module functions perfectly (except for hot output), and the transistors were supplied in an Elby kit. I have emailed Laurie to see if the transistors he supplied are correct (can't seem to find a datasheet for them).
Also the calibration trimmer does offset the hot output voltage, but no where near enough. I was wondering if a 20 turn trimmer here would allow me to drop the voltage of the output right down whilst still maintaining the correct triangular waveshape?
Like I said it only outputs high voltages when its being triggered.
It's completely useful as it is, I just have to attenuate the output. Not comfortable send 15v signals around the modular. Or do I not need to worry about this at all? I know it distorts my VCAs pretty quick.
Any help much appreciated!
- Kevin
Most people seem to have difficulty with the transistor pin-outs not matching the circuit. I don't think this is the problem here. The module functions perfectly (except for hot output), and the transistors were supplied in an Elby kit. I have emailed Laurie to see if the transistors he supplied are correct (can't seem to find a datasheet for them).
Also the calibration trimmer does offset the hot output voltage, but no where near enough. I was wondering if a 20 turn trimmer here would allow me to drop the voltage of the output right down whilst still maintaining the correct triangular waveshape?
Like I said it only outputs high voltages when its being triggered.
It's completely useful as it is, I just have to attenuate the output. Not comfortable send 15v signals around the modular. Or do I not need to worry about this at all? I know it distorts my VCAs pretty quick.
Any help much appreciated!
- Kevin
--- In cgs_synth@yahoogroups.com, "scozbort" <kevin.babbage@...> wrote:
>
> Hi!
>
> Can't believe I only just found this place...
>
> I'm having an issue with my VCS build and hoping someone has come across it before.
>
> When I use the trigger in and slow fall times the module outputs very hot voltages - I think it would go to 15v if I let it.
>
> But in cycle mode it outputs normal voltages.
>
> I suspect a wiring fault but I can't see any mistakes, unless of course I have misunderstood how to wire it up - which is likely!
>
> Hoping its an easy fix and thanks in advance
> - Kevin
>