cgs29 wave multiplier problem
2012-11-13 by nikmisnikmis
Hello,
I was wondering if anyone might give advice on my cgs29 Wave Multiplier build. It's a Version 1 Rev 2 board. I got it together this weekend, and I thought it was working correctly on the first power up. Now that I have played with it a bit, I realize there is something probably wrong, maybe. The grinder and lockhart sections are working perfectly. The main folder section is doing something, but its not what I think its supposed to be doing.
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
All the ICs are getting correct voltages and my wiring seems correct. I have probably done something really stupid. The only other thing is, I am using a CA3080 instead of a LM3080, but I think that doesn't matter.
Can you guess what I did wrong?
thanks
I was wondering if anyone might give advice on my cgs29 Wave Multiplier build. It's a Version 1 Rev 2 board. I got it together this weekend, and I thought it was working correctly on the first power up. Now that I have played with it a bit, I realize there is something probably wrong, maybe. The grinder and lockhart sections are working perfectly. The main folder section is doing something, but its not what I think its supposed to be doing.
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
All the ICs are getting correct voltages and my wiring seems correct. I have probably done something really stupid. The only other thing is, I am using a CA3080 instead of a LM3080, but I think that doesn't matter.
Can you guess what I did wrong?
thanks