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# Eddy currents in thick laminations

- To: femm@yahoogroups.com
- Subject: Eddy currents in thick laminations
- From: Douglas@magtech.co.uk
- Date: Tue, 23 Oct 2001 12:49:21 -0000
- User-agent: eGroups-EW/0.82

    Problem:

    How does one approach determining the eddy-current losses in
    a "laminated material" with a thickness of several millimeters and
    where the frequency under consideration is greatly above the more
    usual 50-60Hz range. Surely the skin depth must now become an issue,
    as the lamination is no longer a "thin" conductor with uniform
    current density. The simpler (freshman textbook type) formulas no
    longer apply? Any pearls of wisdom would be most appreciated.

    Douglas Stevenson

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