Power switching?

[w!ll]

I recently finished a 4ms mini-swash and there's a really irritating audible oscillation when the effect is off that basically makes it useless, I can use the noise gate on it to turn it down, but i don't really like the way it sounds like that. I thought perhaps i could use a switch to turn the power on/off , with the effect always on, as it's truebypass and that would get rid of the irritating osicallation. Is  this recommended? Would turning the power on and off like that damage anything? Perhaps someone has a swash and has an easier solution that i've overlooked? Any ideas?

Will.

[Joe]

This probably has a lot to do with the power supply. Are you using a battery or external supply? In the case of the battery, a filter capacitor across the terminals should help. Maybe 100uF or so. External supplies should be regulated, not just a simple wall-wart type.

A circuit like this really needs a ground plane, which is already there if you've mounted it in a metal box with spacers, and if the negative battery terminal shows continuity to the box. Plastic boxes etc get more complicated.

If the power supply solutions don't help, maybe try some 470pF caps:
-stage 1, between - and output
-stage 2, between + and output
-stage 3, between - and output

The 470pF is just a starting value to see if the oscillation stops, then try going lower and see if you can make it sound good without the oscillation.

[chalk]

The "regular" swash has the option for tame/trouble for this very reason. It switches in a smaller capacitor so that when you cut the power, and then turn it back on, it doesn't take any time to charge. In this mode you can cut the power when you bypass the swash, and it will kill the background oscillations.

However, with a swash tweaked right... You shouldn't need this mod.

Make sure your power regulator is mounted offboard and use TWO 100uf capacitors one for power into the regulator and one out.

If you can't fix it with this, the commonsound page has the tame/trouble mod, should be obvious as the miniswash has only one 10uf cap.

I'd work with it more though... tame mode is....  , IMHO