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# AC Solenoid example

- To: femm@yahoogroups.com
- Subject: AC Solenoid example
- From: "bdearl65" <brianearl@tri-techllc.com>
- Date: Fri, 12 Apr 2002 22:27:26 -0000
- User-agent: eGroups-EW/0.82

    I am trying to model an AC solenoid. I do not understand how to
    drive the coil. For DC I already know the resistance of the coil so
    it is simple to determine what the coil current will be. I enter
    this either as a current density in the material properties dialog
    box or as a current in the circuit dialog box.

    For AC, the inductive reactance depends not only on the coil, which I
    can compute, but also on the configuration of the solenoid
    components, which is not easy to compute. I would assume this is one
    of the reasons you would use FEMM anyway! How do I apply current to
    the model when I don't yet know what the inductive reactance is?

    If anyone has an example of an AC solenoid model I would appreciate
    it very much. Thank you.

    Brian Earl

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