MAGNETIC COUPLER

PROBLEM TO BE SOLVED: To provide a magnetic coupler operating with further high sensitivity and high accuracy. SOLUTION: This magnetic coupler is provided with: a thin-film coil 20 wound in a first layer L1; and a first MR element 31 arranged in a second layer L2, and detecting an induction magnetic...

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Bibliographic Details
Main Authors YAMAGUCHI HITOSHI, HARATANI SUSUMU
Format Patent
LanguageEnglish
Published 22.10.2009
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TESTING
TRANSFORMERS
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Summary:PROBLEM TO BE SOLVED: To provide a magnetic coupler operating with further high sensitivity and high accuracy. SOLUTION: This magnetic coupler is provided with: a thin-film coil 20 wound in a first layer L1; and a first MR element 31 arranged in a second layer L2, and detecting an induction magnetic field Hm generated by a signal current Im flowing through the thin-film coil 20. The first MR element 31 has a plurality of strip-like patterns 311 extending in a strip-like shape. The plurality of strip-like patterns 311 are connected to one another by connection parts 312 at positions at predetermined distances from end edges of themselves in the extension direction (Y-axis direction). Thereby, a sense current flowing through the first MR element 31 never flows the ends of the strip-like patterns 311. COPYRIGHT: (C)2010,JPO&INPIT
Bibliography:Application Number: JP20080092131