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# Re: [femm] Re: Crosstalk mode? / --> transformer calculation summary

- To: femm@yahoogroups.com
- Subject: Re: [femm] Re: Crosstalk mode? / --> transformer calculation summary
- From: Edwin Spencer <edwin.spencer@mscsoftware.com>
- Date: Fri, 13 Jul 2001 08:33:51 -0700
- In-reply-to: <10299.995026080@www30.gmx.net>

    Hi Cornelius,
    I would it appreciate a copy of that "Transformer Tutorial ".
    Thanks in advance.
    Edwin Spencer

    Th
    At 02:08 PM 7/13/2001 +0200, you wrote:

>     SE-HO YOU wrote:
>     >Has anyone tried to cross talk model with FEMM ? For example,
>     >If I have two or more rectangular conductors (only one conductor has a
>     >source), then can I get inductance or current from the quite (or victim)
>     >line ? As some texts put it, can I be able to calculte capcitance or
>     >inductance coulping coefficients?

> `
> hello everyone,`

>     as is evident from my former posts to the group I am also in the process
>     of learning how to use FEMM for transformer calculations.
>     This includes the calculations of self inductances, mutual inductances,
>     leakage inductances, core flux and induction values (saturation problems).
>     Thanks to discussions mainly with Dave and Keith I am beginning to see
>     things a bit more clearly and am in the process of writing a little
>     "TRANSFORMER TUTORIAL" for myself, which will be a collection of the
>     various methods for calculating these parameters. to be used as a quick
>     lookup reference. And I hope it will not be full of errors... :-)

>     I should have this tutorial finished in the next weeks (...other work to
>     be done as well...). Anybody interested in this summary please drop me an
>     email and I will mail it to you when I am finished.

>     SE-HO: I think what you call cross-talk is what I call mutual (inductance)
>     so it will be covered in the summary. However, the general process
>     is that you have to calculate the coupling coefficient (can be done
>     with FEMM), then calculate the induced current in the second coil
>     by hand. It can not be done automatically in a 2D model. For a final
>     picture of the fields emanating from the 2 coils you have to put
>     a current source on either coil, using the values you calculated
>     by hand.

>     RUKMAL: sri I did not come back to your last post, too busy but havent
>     forgotten

>     a nice weekend to everyone, regards,
>     Cornelius

> ``

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    Edwin Spencer
    Senior Consulting Engineer
    MSC.Software
    Expert Solutions Group
    2975 Redhill Avenue
    Costa Mesa
    Ca 92626
    Phone : 714 445 3567
    email : edwin.spencer@mscsoftware.com
    <http://www.mscsoftware.com/>http://www.mscsoftware.com

``

- References:
  - Re: Crosstalk mode? / --> transformer calculation summary
    - From: corneliuspaul@gmx.de

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