The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 2013
Filed:
Jan. 31, 2008
Masaaki Yamamoto, Kyoto, JP;
Yuichi Kariya, Kyoto, JP;
Katsuhisa Toshima, Sendai, JP;
Nobukiyo Kobayashi, Sendai, JP;
Takeshi Yano, Sendai, JP;
Masaaki Yamamoto, Kyoto, JP;
Yuichi Kariya, Kyoto, JP;
Katsuhisa Toshima, Sendai, JP;
Nobukiyo Kobayashi, Sendai, JP;
Takeshi Yano, Sendai, JP;
OMRON Corporation, Kyoto, JP;
The Research Institute for Electric and Magnetic Materials, Miyagi, JP;
Abstract
In a magnetic coupler device comprising: a magnetic field generation circuit generating a magnetic field according to an input current; and a detection bridge circuit including a pair of magnetoresistance effect devices, a resistance value of each of the magnetoresistance effect devices changing by applying a magnetic field generated by said magnetic field generation circuit to each of the magnetoresistance effect devices, and having two outputs between which a voltage difference is generated according to an intensity of the magnetic field generated by said magnetic field generation circuit, by forming a geometric shape of each of said magnetic field generation circuit and said detection bridge circuit in line symmetric or point symmetric, a high S/N ratio is obtained even with high frequency.