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# Re: [femm] Trouble with a 90° magnetic filter coil

- To: femm@yahoogroups.com
- Subject: Re: [femm] Trouble with a 90° magnetic filter coil
- From: David Meeker <dmeeker@foster-miller.com>
- Date: Tue, 02 Oct 2001 11:25:27 -0400
- Organization: Foster-Miller, Inc.
- References: <9p1kk4+qnff@eGroups.com>

jens2504@web.de wrote:

> hej everybody,

> I just joined the group in hope you could help me. I want to
> calculate and plot the magnetic flux density in a copper solenoid,
> which curved of 90°. The diameter of the 20 copper turns is 6.5cm.
> I thought it might work to use a one symmetry axis for one turn, so
> that I would have 20 axis' and then my hope was to group them, but
> unfortunately it didnt work out. Either I use the group function
> wrong or the way I thought is just impossible.
> anyway, if somebody could give me an advise or some help I would be
> really glad.
> Thank you very much.

> Jens

I'm not quite sure what you're trying to do, but it sounds like you might have a problem that is really 3D. FEMM can presently address only problems that can be idealized as 2D planar or axisymmetric geometries.

Dave.

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    org:Foster-Miller, Inc.;Electrical and Electronic Systems Group
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    fn:David Meeker, Ph.D.
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- References:
  - Trouble with a 90° magnetic filter coil
    - From: jens2504@web.de

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