Re: [femm] how do I model a torroidal transformer ?

["robert Macy" <macy@xxxxxxxxxxxxxx>]

Whoa, Nellie! Big typo in my email. be sure to look at
the sample programs sent later, especially the one that
uses "sheet" current

But I would have set the depth more like pi/4*0.75 inch to
compensate for the circular cross section of the torroid. 

- Robert -


On Tue, 26 Aug 2003 09:42:21 +0930
"Mark Snoswell" <mark@xxxxxxxxxxxxxxx> wrote:
> Excellent! ... I should of thought of that. That’s all
> the hint I need
> to do it -- I think.
> 
> Thanks :)
> 
> 
> |From: robert Macy [mailto:macy@xxxxxxxxxxxxxx] 
> 
> |The torroidal transformer *is* axisymmetric, but when
> drawn 
> |that way the currents go around the small circle and the
> 
> |magnetic field is perpendicular to the page. I don't
> think 
> |femm solves this situation. 
> |
> |Instead and approximation is to draw the cross sectional
> |view in x-y form and set the total length to the median 
> |circumference. 
> |
> |The "crunching" of the field at the inside curve won't
> show
> |up, but it will get you started. 
> |
> | - Robert -
> |
> |On Mon, 25 Aug 2003 03:16:32 -0000
> | "Dr Mark Snoswell" <mark@xxxxxxxxxxxxxxx> wrote:
> 
> |> 
> |> How do I model the field of a torroidal transformer?
> ...
> |> it's axi
> |> symetric but I can't quite see hwo to model it.
> 
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