Cgs synth

> Advise is given at your pages for BurstGen, SuperPsycho and
>GateSeq. Any other modules should be includded on the "dirty
>PSU" list? (: GatedComp, DigitalNoise, PulseDivider...?)

Yes, though the Gated Comp also has an analog section, so it needs a "clean
dirty" supply :)

Master Divider, V8 sim, gate sequencer are also all dirty supply contenders.

> Using low current LEDs for the SuperPsycho would help? or
>even eliminate the problem?

If you reduced the corresponding resistors, it would help some, but not
eliminate the problem. Another way to create a "dirty" supply is via
decoupling. Place a 10R in each power rail, followed by say 100uF. Maybe do
this twice in a row even, if fluctuations are still noticed. A DC filter
choke could be put in line, if you have something like that handy.

> What can be the bad effect from using a switched type PSU for
>the BurstGen and the SuperPsycho?

Mostly switchmodes are notorious for putting out noise, electrical,
magnetic, and sound. They will not damage the synth modules.

> Last one: are chokes=ferrite beads?

Ferrite beads are very small chokes. Other chokes can be somewhat larger,
and where I refer to a choke, I mean something larger. Perhaps a DC
resistance of around 10 ohms, and an impedence of 470 milliHenry or greater.


Ken
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Ken Stone sasami@...
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