Need some help with the Wavemultiplier CGS29 REV 2
2006-01-02 by fonik2000
Hi all,
I am new to this forum and I am relatively new to SDIY, too. I
started building a modular synth about one year ago, knowing nothing
at all. The first module I ever built was the Psycho LFO a great,
easy to build and very effective circuit.
Now I run into some problems with the Wavemultiplier CGS29 REV 2. It
seems to work but with a very, very low output. The PWM doesn´t work
at all.
So I checked all traces and values against the schematic and found
that the schematic differs from the pcb layout?!.
On the schematic pin1 of IC5 is connected to pin5 of IC4 (positive
input) and pin1 of IC4 is connected to pin6 of IC4 (negative input),
while on the pcb layout pins 5 and 6 of IC4 are interchanged. Might
this be the cause of the circuit malfunction?
Any comment is appreciated for I am willing to learn more about these
things.
Thank you all in advance
Matthias Herrmann
Germany
I am new to this forum and I am relatively new to SDIY, too. I
started building a modular synth about one year ago, knowing nothing
at all. The first module I ever built was the Psycho LFO a great,
easy to build and very effective circuit.
Now I run into some problems with the Wavemultiplier CGS29 REV 2. It
seems to work but with a very, very low output. The PWM doesn´t work
at all.
So I checked all traces and values against the schematic and found
that the schematic differs from the pcb layout?!.
On the schematic pin1 of IC5 is connected to pin5 of IC4 (positive
input) and pin1 of IC4 is connected to pin6 of IC4 (negative input),
while on the pcb layout pins 5 and 6 of IC4 are interchanged. Might
this be the cause of the circuit malfunction?
Any comment is appreciated for I am willing to learn more about these
things.
Thank you all in advance
Matthias Herrmann
Germany