The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: firstname.lastname@example.org (Roy McCammon)
Subject: Re: Deriving H for magnetic cores
Date: Wed, 18 Dec 2002 12:15:50 -0600
References: <3DFF8FA6.4593A00A@mmm.com.DELETETHIS> <3DFFE9DB.1BEFBBE3@earthlink.net> <3E008AB8.141E41D5@mmm.com.DELETETHIS>
X-Mailer: Mozilla 4.5 [en]C-CCK-MCD 3M/NCP 4.5 (WinNT; I)
"Christopher R. Carlen" wrote:
> Roy McCammon wrote:
> [nicely worded discourse snipped]
> > 2. A contour such that | H | = constant. You probably
> > mean it in this sense. That seems plausible, (requiring
> > only continuity?), but that sense doesn't pertain to the
> > discussion because in the special case we needed the
> > fact that H . dL = constant on the contour of interest.
> > 3. A contour such that H . dL = constant
> Wouldn't it be actually true that the "contour of constant H" in which
> we are interested is the one in which H=|H_vec| is constant (your #2),
> since then you could take H (scalar magnitude) out of the integral,
> which is the necessary mathematical step to make use of Ampere's Law.
No, that is not sufficient. You need the component of
H that is tangential to the contour to be constant. If
that is so, then the integral of H . dL becomes a constant
> Then you would *just* have to be able to express the unit vector of H in
> terms of r, phi, and perhaps z. Not that this would be possible of course.
> Aren't integrals like this parametrized so that you would integrate a
> parametric vector function that would follow the contour over which H is
> constant and in which the unit directional component is expressed in
> terms of the parameter?
> Good day.
> Christopher R. Carlen
> Principal Laser/Optical Technologist
> Sandia National Laboratories CA USA
Thank you for reading and or replying
If you are one in a million, there are 6000 people just like
Local optimization almost never yields global optimization.
Opinions expressed here are my own and may not represent those of my employer.
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup