POWDER MAGNETIC CORE AND INDUCTOR

To provide a powder magnetic core and an inductor with good DC superimposition characteristics.SOLUTION: In a powder magnetic core according to an embodiment of the present disclosure, magnetic powder is bonded through a binder layer. Defining the magnetic permeability at a magnetic flux density of...

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Bibliographic Details
Main Authors SHIMA HIROSHI, CHIBA MIHO, URATA KENRI, KOBAYASHI KENICHIRO, YAMAKI MAKOTO, MIKOSHIBA SHUN, ONISHI NAOTO
Format Patent
LanguageEnglish
Japanese
Published 19.10.2023
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Summary:To provide a powder magnetic core and an inductor with good DC superimposition characteristics.SOLUTION: In a powder magnetic core according to an embodiment of the present disclosure, magnetic powder is bonded through a binder layer. Defining the magnetic permeability at a magnetic flux density of 0T, generated by a direct current, as μB=0T, and the magnetic permeability at a magnetic flux density of 0.5T, generated by a direct current, as μB=0.5T, the value of μB=0.5T/μB=0T is 0.65 or more.SELECTED DRAWING: Figure 1 【課題】直流重畳特性が良好な圧粉磁心、及びインダクタを提供することである。【解決手段】本開示の一態様にかかる圧粉磁心は、磁性粉末がバインダ層を介して結着された圧粉磁心であって、直流電流によって生ずる磁束密度が０Ｔのときの透磁率をμＢ＝０Ｔとし、直流電流によって生ずる磁束密度が０．５Ｔのときの透磁率をμＢ＝０．５Ｔとした場合、μＢ＝０．５Ｔ／μＢ＝０Ｔの値が０．６５以上である。【選択図】図１
Bibliography:Application Number: JP20220063199