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:
Aug. 12, 2008
Filed:
Apr. 06, 2006
Yukihiko Tanizawa, Kariya, JP;
Seiichirou Ootake, Hazu-gun, JP;
Takashige Saitou, Ama-gun, JP;
Masahiro Aratani, Okazaki, JP;
Takeshi Tukamoto, Okazaki, JP;
Masato Ishihara, Anjo, JP;
Norio Miyahara, Obu, JP;
Yukihiko Tanizawa, Kariya, JP;
Seiichirou Ootake, Hazu-gun, JP;
Takashige Saitou, Ama-gun, JP;
Masahiro Aratani, Okazaki, JP;
Takeshi Tukamoto, Okazaki, JP;
Masato Ishihara, Anjo, JP;
Norio Miyahara, Obu, JP;
DENSO CORPORATION, Kariya, JP;
Jeco Co., Ltd., Saitama-pref., JP;
Abstract
A current detection apparatus includes a magnetic core having a ring shape with a gap and a center opening portion through which a current path is disposed, and a magnetic sensor including a magnetic sensing element such as a Hall effect element arranged in the gap. When a current flows through the current path, the magnetic core generates magnetic flux therein so that magnetic field is generated in the gap. The magnetic sensor outputs different electrical signals, each of which is measured in a different measurement range and corresponds to intensity of the magnetic field in the gap. The current detection apparatus measures the current based on the electrical signals outputted from the magnetic sensor.