REFLECTOR:Buss material

Douglas Holub reflector@tvbf.org
Tue, 27 Apr 2004 09:34:32 -0500


What can I say?
----- Original Message ----- 
From: "Nolan Frederick" <nvincent@idcomm.com>
To: <reflector@tvbf.org>
Sent: Tuesday, April 27, 2004 9:31 AM
Subject: Re: REFLECTOR:Buss material


> Good Grief Doug,  If you're an EE you know about "Skin Effect and Skin
> Depth" and how skin depth depends of frequency.  You also SHOULD know
about
> D C resistance of conductors. conductivity, resistivity, etc. If you've
> forgotten this stuff,  look in an encyclopedia.
> nolan
>
> ----- Original Message ----- 
> From: "Douglas Holub" <doug.holub@comcast.net>
> To: <reflector@tvbf.org>
> Sent: Tuesday, April 27, 2004 7:06 AM
> Subject: Re: REFLECTOR:Buss material
>
>
> > I'll admit I'm a little confused. I'm an electrical engineer, and I
> remember
> > learning that electrons move mostly on the surface of a conductor. I
> thought
> > stranded wire could carry more current than solid wire for that reason.
> But
> > I looked at Belden's web site yesterday, and that doesn't seem to be
true.
> > So out of curiosity I looked in some texts and on the web and saw that,
at
> > least electrostatically speaking, free electrons will be mostly on the
> > surface of a conductor. I'm still not sure what happens when the current
> > starts flowing.
> > http://www.physics.ubc.ca/~janis/Courses/354/lectures/PHYS354.lect7.pdf
> >
> > One spelling note: a buss is a kiss.  A bus carries people or electrical
> > current.
> >
> > Doug
> >
> > ----- Original Message ----- 
> > From: "Dave Black" <dvblack@comcast.net>
> > To: <reflector@tvbf.org>
> > Sent: Monday, April 26, 2004 8:51 PM
> > Subject: Re: REFLECTOR:Buss material
> >
> >
> > > David,
> > >
> > > > It must be a misunderstanding. The only time I've heard of the skin
> > > > effect - were it's the outer surface that carries the current - is
at
> > very
> > > > high frequencies.
> > >
> > > That's my understanding as well.
> > > At DC or low AC frequencies, it's the wire cross-sectional area that
> > matters.
> > > Skin effect only comes into play at high (RF) frequencies. Might be an
> > issue
> > > for our transponder antenna, but not for our electrical buss.
> > >
> > > Dave Black
> > > _______________________________________________
> > > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> > >
> > > Visit the gallery!  www.tvbf.org/gallery
> > > user:pw = tvbf:jamaicangoose
> > > Check new archives: www.tvbf.org/pipermail
> > > Check old archives:
http://www.tvbf.org/archives/velocity/maillist.html
> > >
> >
> >
> > _______________________________________________
> > To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery
> > user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail
> > Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> >
>
>
> _______________________________________________
> To change your email address, visit
http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery!  www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>