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Eeyore  
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  More options Jul 6 2008, 4:12 am
Newsgroups: sci.electronics.design
From: Eeyore <rabbitsfriendsandrelati...@hotmail.com>
Date: Sun, 06 Jul 2008 00:12:26 +0100
Local: Sun, Jul 6 2008 4:12 am
Subject: Re: PCB power planes?
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Martin Griffith wrote:
> Eeyore wrote:
> >John Larkin wrote:

> >> Splitting grounds is usually a bad idea. Except when it's a terrible
> >> idea.

> >Except when it's audio of course and you don'y want digital return
> >currents you can hear in the audio ground. In which case pkysically
> >separated but carefully linked planes are the way to go in order to
> >direct the currents where you want them to go rather than randomly
> >anywhere.

> Ha.. I remember a student who said he could make a small audio desk
> with the equalisers using MF10's.
> Never saw him again....I wonder why?

Was that the NatSemi ? switched capacitor filter ?

No surprise there !

Graham


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