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Measurement of losses and saturated permeability of saturable cores under submicrosecond saturation

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3 Author(s)
Seki, H. ; Res. Lab., Hitachi Ltd., Ibaraki, Japan ; Takemori, S. ; Sato, T.

Two specific methods are introduced for obtaining accurate losses and saturated permeability of saturable cores under submicrosecond saturation. One employs an additional inductor for accurate measurement of the losses. The other minimizes stray inductance for accurate measurement of the saturated permeability. The measured relative permeability of Co-based amorphous cores rapidly drops to nearly 1.0. On the other hand, ferrite cores need a much larger magnetic field than that for Co-based amorphous cores in order to obtain the relative permeability of 1.0

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Magnetics, IEEE Transactions on  (Volume:32 ,  Issue: 6 )