Clicking Electric mistress....

[Urban Osterman]

Hi All
I have just build a DIY Electric Mistress.
I sounds very good, but there is one problem.

There is a click on the output together with the sound.
I have found out that it comes from the Osccillator
When the squarewave shifting status from hi to low and viceversa.
A spike appears on the output that sounds as a click
When setting the speed to fast it sounds like ...click..click..click..click

a very annoying sound

I have tride to add lots of capacitors around the Osccillator part
of the schema, I have also tried to separate the Osccillator ground
from the analog ground...but.....

Question:
Do anybody has any experience of a similar problem?
Do anybody figured out a way to get rid of it..

Urban Osterman  

[saxtim]

Have you tried adjusting the balance trim?  (r12 at the GGG schematic).  I think that's the one you want - the clicking sound is the clock signal I think.  It puts out to out of phase signals, by getting the balance trim in the right spot you should be able to get the clock sound back to nearly nothing as the out of phase signals will cancel

tim