Cgs synth

Thank you Ken.

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...?)

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

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

Last one: are chokes=ferrite beads?

Many thanks in advance!
Fernando

--- In cgs_synth@yahoogroups.com, sasami@h... wrote:
>
> >You suggest using a separate PSU for digital modules (burst
> >gen, gate seq, etc)
> >
> >I wonder if a separate ground for all of them coming from the
> >main PSU is enough to avoid noise on audio and CV circuits.
>
> The noise is also put on the power rails by digital modules, so
a separate
> ground is not enough.
>
> >I wonder also about another solution: a high quality (very well
> >regulated/low ripple) switched type PSU can be used for the
> >digital modules -they are very little and light, so one could put
> >one on each cabinet. Or a linear PSU is still needed?
>
> A switcher is possibly okay, though remember that some of the
"digital"
> modules contain analog portions as well.
>
> At the very least, run two sets of power wiring back to the one
supply, and
> put chokes in line with each rail, and additional capacitors
between 0 and
> each rail to help suppress the noise.
>
> Ken
>
>
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