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# [femm] Drawing circles

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- Subject: [femm] Drawing circles
- From: marctt2@aol.com
- Date: Wed, 10 Nov 1999 21:23:55 -0800
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    Hi,
    I'm wondering if there's a simple way to draw circles in FEMM. I'm
    attempting to model a coil made of round wire, and to estimate losses
    due to skin and proximity effects. Are there any tricks here in the
    drawing and/or analysis of the losses in AC magnetic problems ? I
    assume the simplest way to find inductance of the coil is to integrate
    the stored energy over the problem area; resistive losses in the coil
    can be estimated similarly.

    Also, on another note, is there a way to have a coil made of a single
    turn, but to have FEMM assume that there are no eddy and proximity
    losses in the coil ? i.e. to have constant current density throughout ?
    I think the lamination function may work here but I'm unclear on the
    concept.

    Thanks.

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