[sdiy] Suitcase synth updates

[harrybissell]

Would decoupling...?

No. at least not guaranteed. There is Ohmic and capacitive coupling
INSIDE
a quad package because of the shared power supply layout. A lot of folk
perfer duals for this reason (or singles).

I will use quad packs in circuits I don't NEED to be totally isolated...
or I carefully
choose which function is in which package.

The moral is... "the more separate it the more...uhh... seperate it
is"   ;^P

H^) harry

Tim Ressel wrote:

> Yo,
>
> Would not some stout bypass caps eliminate most of
> this problem?? The TL series are kinda low power, at
> least compared to LM324s.
>
> --tr
>
> --- Neil Johnson <nej22 at hermes.cam.ac.uk> wrote:
> > Mike,
> >
> > > Any ideas/thoughts/comments/suggestions/criticisms
> > would be greatly
> > > appreciated.
> >
> > Just a few late-night comments before bed:
> >
> > 3819 VCO -- it would be better to run each VCO on
> > its own TL084, rather
> > than have each VCO use two halves, otherwise you'll
> > get soft-syncing
> > between the two (caused by the common supply
> > connections within each chip
> > to the two oscillators, and susceptable to glitches
> > on the output of the
> > comparator).
> >
> > Nope, sorry, run out time before I drift off to
> > sleee...... zzzzzzzz
> >
> > Neil
> >
> > --
> > Neil Johnson :: Computer Laboratory :: University of
> > Cambridge ::
> > http://www.njohnson.co.uk
> > http://www.cl.cam.ac.uk/~nej22
> > ----  IEE Cambridge Branch:
> > http://www.iee-cambridge.org.uk  ----
> >
>
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