[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

# Re: [femm] H in magnets

- To: femm@yahoogroups.com
- Subject: Re: [femm] H in magnets
- From: David Meeker <dmeeker@foster-miller.com>
- Date: Wed, 03 Oct 2001 15:36:19 -0400
- Organization: Foster-Miller, Inc.
- References: <20011003151004.7944.qmail@web10904.mail.yahoo.com>

I seem to remember some discussion about this a while back. Check out Message 607. There's a link to some explanatory info on that page that I think has gone bad since the message was posted. Instead, look at:
http://www.magnequench.com/tech_resources/tech_center/reference/reference_main.html

Dave Meeker

marco valcavi wrote:

> Hi!

> I noted that there is a strange calculation of the H
> field in the permanent magnets.

> I inserted data about a ceramic ferrite, following the
> instruction, so I shifted the demagnetization curve to
> the right to meet the origin.
> I include this magnet in an axisimmetric magnetic
> circuit with steel and a gap.

> Inspecting with FEMM (3.0 and 3.1) the H field, I
> found that the output of the H field (Hout) is
> different from the correct value (Hcorrect):

> Hcorrect=Hc - Hout

> where Hc is the coercitivity field .

> This strange value affect all the calculation based on
> the H field inside the magnet.

> bye (ciao)

> Marco

    begin:vcard
    n:Meeker;David
    tel;fax:781-890-3489
    tel;work:781-684-4070
    x-mozilla-html:TRUE
    url:http://members.aol.com/_ht_a/dcm3c
    org:Foster-Miller, Inc.;Electrical and Electronic Systems Group
    version:2.1
    email;internet:dmeeker@foster-miller.com
    title:Senior Engineer
    adr;quoted-printable:;;350 Second Avenue=0D=0A;Waltham;MA;02451-1196;USA
    fn:David Meeker, Ph.D.
    end:vcard

- Follow-Ups:
  - complex inductance???
    - From: "Erdal Bizkevelci" <erdal903@yahoo.com>
  - RE: [femm] H in magnets
    - From: "ATANASI JORNET" <jornet@ee.upc.es>

- References:
  - H in magnets
    - From: marco valcavi <mvalca@yahoo.com>

- Prev by Date: H in magnets
- Next by Date: complex inductance???
- Previous by thread: H in magnets
- Next by thread: complex inductance???
- Index(es):
  - Date
  - Thread