Sensing device utilizing magneto electric transducers

A sensing device utilizing a plurality of magneto electric transducer elements (14-1, 14-2, 15-1, 15-2) disposed in close proximity to a conductive wire (11) through which electric current (12) flows. Magneto-resistive transducer elements of barber-pole type are especially suitable. Structures emplo...

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Main Authors KURASHIMA; SHIGEMI, TANAKA; AKIRA, YODA; HIDEAKI, SHIMIZU; NOBUYOSHI, KOJIMA; YUJI, WAKATSUKI; NOBORU, ENDOH; MICHIKO
Format Patent
LanguageEnglish
Published 17.09.1991
Subjects
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:A sensing device utilizing a plurality of magneto electric transducer elements (14-1, 14-2, 15-1, 15-2) disposed in close proximity to a conductive wire (11) through which electric current (12) flows. Magneto-resistive transducer elements of barber-pole type are especially suitable. Structures employing four magneto-resistive elements (14-1 to 15-2) forming a bridge circuit, or employing a plurality (14-1, 14-2) of magneto-resistive elements connected in series, may be used, wherein magneto-resistive elements are of barber-pole type, with meandering patterns, arranged in doughnut ring shape. The conductive wire (11) may be provided parallel to a substrate (18) or to penetrate through a through-hole (19) located at the centre of a plurality of magneto-resistive element patterns. A sensing device embodying the present invention can have a compact size and can be used for the measurement of both direct current and high frequency current.
Bibliography:Application Number: US19880180120