IEVref: | 221-03-34 | ID: | |

Language: | en | Status: Standard | |

Term: | hysteresis core constant | ||

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Symbol: | η_{i}
| ||

Definition: | in a magnetic core operating in the Rayleigh region, the tangent of the magnetic loss angle due to hysteresis divided by the product of the peak current î in, and the square root of the inductance L of, the measuring coil:$\eta}_{i}=\frac{\text{tan}\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\delta}_{\text{h}}}{\xee\sqrt{L}$ NOTE – The relation between the hysteresis material constant $\eta}_{i}={\eta}_{B}\sqrt{\frac{{\mu}_{0}\text{\hspace{0.17em}}{\mu}_{\text{e}}^{3}}{{V}_{\text{e}}}$
where | ||

Publication date: | 1990-10 | ||

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Internal notes: | 2017-02-27: Subscripts "i" and "B" made italic. See mail exchange with RS and JS 2016-01. JGO 2017-06-02: Cleanup - Remove Attached Image 221-03-341.gif 2017-06-02: Cleanup - Remove Attached Image 221-03-342.gif | ||

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$\eta}_{i}=\frac{\text{tan}\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\delta}_{\text{h}}}{\xee\sqrt{L}$
_{B} and the hysteresis core constant is:

$\eta}_{i}={\eta}_{B}\sqrt{\frac{{\mu}_{0}\text{\hspace{0.17em}}{\mu}_{\text{e}}^{3}}{{V}_{\text{e}}}$

where *μ*_{e} is the effective permeability and *V*_{e} the effective volume.