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:
Sep. 02, 2014
Filed:
Sep. 27, 2011
Ming Gao Yao, DongGuan, CN;
Koyu Yamanoi, Hong Kong, CN;
Wei Xiong, Santa Clara, CA (US);
SAE Magnetics (H.K.) Ltd., Hong Kong, CN;
Abstract
An electrical current sensor device includes a first printed circuit board assembly, a second printed circuit board assembly positioned opposite to the first printed circuit board assembly, and a holder holding the first and second printed circuit board assemblies and providing a passage to allow an electrical conductor to pass through. The first printed circuit board assembly includes a first sensing circuit having a first element pair that includes two magnetoresistive elements with a first pinning direction, the second printed circuit board assembly comprises a second sensing circuit with a second element pair that includes having two magnetoresistive elements with a second pinning direction that is opposite to the first pinning direction, and the first and second pinning directions are perpendicular to a current direction of a current passing through the electrical conductor, the first sensing circuit electrically connects with the second sensing circuit to form a Wheatstone bridge circuit.