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--- effective_permeability_factor [2025/12/06 13:04] – created stan_zurek
+++ effective_permeability_factor [2025/12/06 13:08] (current) – stan_zurek
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-| //[[user/Stan Zurek]], ??? , Encyclopedia Magnetica//, \\ @PAGEL@, {updated: ~~LASTMOD~~}   |
+| //[[user/Stan Zurek]], Effective permeability factor, Encyclopedia Magnetica//, \\ @PAGEL@, {updated: ~~LASTMOD~~}   |
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-**Effective permeability factor** - [(DIN50460>[[https://webstore.ansi.org/standards/din/din504601988|Standard DIN 50460:1988, Determination of magnetic properties of soft magnetic materials; general, terminology and principles of measurement]])]
+**Effective permeability factor** or **p<sub>rms</sub>** - a quantity similar to [[amplitude magnetic permeability]] but whose definition is based on [[peak flux density]] and [[RMS magnetic field strength]].[(DIN50460>[[https://webstore.ansi.org/standards/din/din504601988|Standard DIN 50460:1988, Determination of magnetic properties of soft magnetic materials; general, terminology and principles of measurement]])]
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+Because the definition of this quantity differs from amplitude permeability it is referred to as a "permeability factor" rather than "permeability".[(DIN50460)]
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+^  Effective permeability factor $p_{rms}$  ^^
+|  $$ p_{rms} = \frac{B_p}{μ_0·H_{rms}} $$   |  (unitless)  |
+| where: $B_p$ - [[peak magnetic flux density]] (T), $μ_0$ - [[permeability of vacuum]] (H/m), $H_{rms}$ - effective magnetic field strength (A/m)    ||
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 ===== See also =====
-  *[[ ]]
+  *[[Magnetic permeability]]
 ===== References =====
 ~~REFNOTES~~
-{{tag> ??? Counter}}
+{{tag> Magnetic_permeability Amplitude_permeability Counter}}