Effective Permeability

Discussion in 'General Electronics Chat' started by SVS, Sep 26, 2012.

  1. SVS

    Thread Starter Member

    Aug 16, 2012
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    Hallo Everyone,

    What does effective permeability of a Ferrite mean??
    Could I get some documents to read about this topic?

    Or could someone please explain !!

    Thank you in advance!
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    Permeability is the ability to let Magnetic Flux through without creating Eddy currents.
    like "Resistance" in magnetism, so high permeability means less resistance to magnetism.

    "Effective" means that by changing its dimensions, like diameter or length , or winding more turns of wire on the ferrite,adding an air gap, will alter is Permeability.

    It usually means the higher the permeability the lower the frequencies are cancelled out, the lower the perm the higher frequencies cancelled out.

    http://www.bytemark.com/products/rod1.htm
     
    Last edited: Sep 26, 2012
  3. SVS

    Thread Starter Member

    Aug 16, 2012
    89
    4

    Thank you for the reply.

    But I need something elaborate!!! I need to understand all the parameters which affects the value of inductance when it is wound on a ferrite core.

    One of those is effective permeability.
    I wanna know how it is calculated for a Ferrite and stuff...
     
  4. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    t_n_k likes this.
  5. t_n_k

    AAC Fanatic!

    Mar 6, 2009
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    Ferrite core manufacturers often use the inductance factor AL as the primary design parameter. See the attachment.
     
    SVS likes this.
  6. SVS

    Thread Starter Member

    Aug 16, 2012
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