What is “amplitude permeability μa”?
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A. It is the relative permeability acquired from the maximum value of the magnetic flux density and the maximum value of the intensity of the magnetic field when there are periodic changes in a magnetic core that is in a demagnetized state and a magnetic field that makes the average value of the intensity “zero” is applied.

* Terminology related to ferrites can be found in the website in ”Terms Definitions and Explanations” under ”Ferrite Summary”.
* The symbol and the catalog of this data are in accordance with IEC Publication 60401-3.
* Our terminology and settings were established by reference to JIS C 2560-1,-2.