# US 9,435,829 B2 · Current sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,829 B2 - Document ID: US9435829B2 - Status: Granted - Kind: B2 - Application number: 14/098,367 - Filed: 2013-12-05 - Published: 2014-04-10 - Granted: 2016-09-06 - Earliest claimed: 2011-07-04 - Assignees: Alps Green Devices Co., Ltd. - Applicants: Alps Green Devices Co., Ltd. - Inventors: Hiroyuki Hebiguchi; Shinji Mitsuya; Manabu Tamura; Ryuji Mukaiyama - Web page: https://patentgrep.com/patent/US9435829B2 ## CPC - G01R 19/00: Arrangements for measuring currents or voltages or for indicating presence or sign thereof (G01R5/00 takes precedence; for measuring bioelectric currents or voltages A61B5/24) - G01R 15/20: using galvano-magnetic devices, e.g. Hall-effect devices {, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices} - G01R 15/202: {using Hall-effect devices (Hall elements in arrangements for measuring electrical power G01R21/08)} - G01R 15/207: {Constructional details independent of the type of device used} - G01B 7/10: {using magnetic means, e.g. by measuring change of reluctance} - G01R 21/08: by using galvanomagnetic-effect devices, e.g. Hall-effect devices - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ## Abstract A current sensor includes first and second current paths each including a first conductive portion and second and third conductive portions extending in the X direction from both ends of the first conductive portion, and being neighboring and apart in the Y direction; and first and second magnetoelectric conversion elements arranged with the first conductive portion of the first current path interposed therebetween, and having sensitive axes along the Y direction. The second and third conductive portions of each of the first and second current paths are apart in the Z direction. The second conductive portion of the second current path is arranged in the Y direction with respect to the first and second magnetoelectric conversion elements. Perpendicular lines from the center line of the second conductive portion of the second current path to the first and second magnetoelectric conversion elements have the same direction and equivalent lengths. ## Claims ### Claim 1 A current sensor comprising: a first current path serving as a measurement-subject current path; a second current path provided in a vicinity of the first current path; and wherein each of the first and second current paths includes: a first conductive portion; a second conductive portion extending along an X direction from one end of the first conductive portion; and a third conductive portion extending along the X direction from another end of the first conductive portion, wherein the first and second current paths are apart in a Y direction orthogonal to the X direction, wherein the second and third conductive portions of the first current path are apart from each other in a Z direction and aligned with each other in the Y direction, the Z direction being orthogonal to the X and Y directions, wherein the second and third conductive portions of the second current path are apart from each other in the Z direction, and aligned with each other in the Y direction, wherein the current sensor further comprises first and second magnetoelectric conversion elements arranged with the first conductive portion of the first current path interposed therebetween, the first and second magnetoelectric conversion elements having a respective sensitive axis along the Y direction, wherein the second conductive portion of the second current path is arranged on one side of the first and second magnetoelectric conversion elements in the Y direction, and wherein a perpendicular line from a center line of the second conductive portion of the second current path to the first magnetoelectric conversion element and a perpendicular line from the center line of the second conductive portion of the second current path to the second magnetoelectric conversion element have a same direction and a same length. ### Claim 2 (depends on 1) The current sensor according to claim 1, wherein the first and second conductive portions form a right angle, and wherein the first and third conductive portions form a right angle. ### Claim 3 (depends on 1) The current sensor according to claim 1, wherein the first and second magnetoelectric conversion elements are arranged by avoiding a region along a plane normal to and intersecting with the first conductive portion of the second current path, the plane extending in the Y direction. ### Claim 4 (depends on 3) The current sensor according to claim 3, wherein the second conductive portion of the first current path, the third conductive portion of the first current path, the second conductive portion of the second current path, and the third conductive portion of the second current path are parallel to one another, wherein the first and second conductive portions in each of the first and second current paths form an angle other than a right angle, and wherein the first and third conductive portions in each of the first and second current paths form an angle other than a right angle. ### Claim 5 (depends on 1) The current sensor according to claim 1, further comprising: fourth and fifth conductive portions connected to the second conductive portion of the first current path; and sixth and seventh conductive portions connected to the third conductive portion of the first current path, wherein the seventh conductive portion is provided on an extended line of the fifth conductive portion. ### Claim 6 (depends on 1) The current sensor according to claim 1, wherein the first conductive portion of the first current path has a length in the Y direction greater than a length thereof in the X direction, and wherein each of the second and third conductive portions of the first current path has a length in the Y direction greater than a length thereof in the Z direction. ### Claim 7 (depends on 6) The current sensor according to claim 6, further comprising: a substrate on which the first and second magnetoelectric conversion elements are mounted, wherein the substrate has a first slit formed between the first and second magnetoelectric conversion elements, and the first conductive portion of the first current path is arranged at the first slit. ### Claim 8 (depends on 7) The current sensor according to claim 7, further comprising: third and fourth magnetoelectric conversion elements mounted on the substrate such that the first conductive portion of the second current path is interposed therebetween, wherein the substrate has a second slit formed between the third and fourth magnetoelectric conversion elements, and the first conductive portion of the second current path is arranged at the second slit.