HB curve for a core

Discussion in 'General Electronics Chat' started by samjesse, Mar 12, 2010.

  1. samjesse

    Thread Starter Active Member

    Sep 14, 2008
    202
    0
    Hi

    How can one obtains the BH curve of a randomly picked transformer core?

    Thank you
     
    Last edited: Mar 12, 2010
  2. someonesdad

    Senior Member

    Jul 7, 2009
    1,585
    141
    Prepare a small example of it and measure it in a vibrating sample magnetometer. :p

    Sorry, but that's what we did in industry -- most people won't have access to such equipment. You could build your own looper, however -- that's what a couple engineers I used to work with did.
     
  3. samjesse

    Thread Starter Active Member

    Sep 14, 2008
    202
    0
    What would one expect the BH curve of a core of a Mig welder to look. i.e. points of remanence and coercevity? and would it be narrow or wide curve?

    My best guess would be a very narrow curve and very low remanence and coercivity.
     
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