[sdiy] dare I say - decoupling?

[Magnus Danielson]

From: "Paul Schreiber" <synth1 at airmail.net>
Subject: Re: [sdiy] dare I say - decoupling?
Date: Sat, 3 Sep 2005 10:46:59 -0500
Message-ID: <006901c5b09e$b8cd49b0$0301a8c0 at bilbo>

> Rail-to-ground.
> Rail-to-rail doesn't do *anything* worthwhile. In fact, it can actually add
> noise :)

I would not be that drastic, it really depends on the circuits dynamic
current-dumping behaviour. If you have strong rail-to-rail dynamic current
dumping, then doing decoupling rail-to-rail in the neighborhood of such a
source is definitly a good idea. So, the rule is rather to decouple between the
power rails (ground included) seing the dynamic load connected between them.

Cheers,
Magnus


> Paul S.
> 
> 
> ----- Original Message ----- 
> From: "Michael Ruberto" <frankentron at hotmail.com>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Saturday, September 03, 2005 10:28 AM
> Subject: [sdiy] dare I say - decoupling?
> 
> 
> > Well we know who the decoupling experts are here, and they do shine so 
> > brightly. At the risk of sounding like the moron I am I must pose 2 
> > questions to the decoupling kings.
> > 
> > which is better, decoupling caps from each rail to ground, from rail to 
> > rail, or both?
> > what's the difference?
> > 
> > what is the air-speed velocity of an unladen swallow?
> > 
> > thanks in advance oh wise ones ;-)
> > 
> > M. A. Ruberto
> > 
> >