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# Re: [femm] How is 5 Tesla possible?

- To: <femm@yahoogroups.com>
- Subject: Re: [femm] How is 5 Tesla possible?
- From: "Robert Macy" <macy@california.com>
- Date: Mon, 13 Jan 2003 08:46:06 -0800
- Organization: AJM Electronics
- References: <avn680+1sbr@eGroups.com> <3E1F3465.4050201@ieee.org> <5.1.0.14.0.20030113140247.01dc0b20@staff-mailin.lboro.ac.uk>
- Reply-to: "Robert Macy" <macy@california.com>

    Just downloaded and ran it. Got 8 to 9 Teslas in the tight areas.

    ??

    - Robert -

    ----- Original Message -----
    From: Keith Gregory
    To: femm@yahoogroups.com
    Sent: Monday, January 13, 2003 6:11 AM
    Subject: Re: [femm] How is 5 Tesla possible?

    Robert,

    Harmonic problems (i.e. where frequency is not zero) are solved linearly by
    FEMM, it doesn't include saturation so any value of B can be achieved. Dave
    has recently produced a development version which can deal with non-linear
    problems, which is (I think) currently version 3.3alpha2.

    http://femm.berlios.de/femm33src.zip
    http://femm.berlios.de/femm33bin.exe

    Try that.

    Keith.

    At 23:22 12/01/2003 -0800, you wrote:

    >Apologize for the stupidity here, but...
    >
    >How is 5 Tesla possible? in mumetal that saturates at 0.6T?
    >
    >While doing a simple analysis using mumetal I found that at 100KHz the
    >material displayed the expected skin depth effects, but the |B| magnitude
    >fields were more than 5 teslas.
    >
    >How is this possible?
    >
    > - Robert -
    >
    >
    >
    >
    >
    >
    >
    >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

    Dr. Keith Gregory
    Senior Lecturer
    Department of Electronic & Electrical Engineering
    Loughborough University
    Loughborough
    Leicestershire
    LE11 3TU
    UK

    Phone: +44 (0) 1509 227025 Fax: +44 (0) 1509 227014
    Department web: http://www.lboro.ac.uk/departments/el/

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- Follow-Ups:
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- References:
  - Alnico 8 relative permeability
    - From: "sloothrog <salvarsan@std.com>" <salvarsan@std.com>
  - Re: [femm] Alnico 8 relative permeability
    - From: David Meeker <dmeeker@ieee.org>
  - Re: [femm] How is 5 Tesla possible?
    - From: Keith Gregory <k.gregory@lboro.ac.uk>

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