Magnetic field detecting sensor and magnetic field detecting apparatus using the same
US9983273B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2015 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Oct 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/1253
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic field detecting sensor includes a bridge circuit which is connected to multiple magnetoresistive effect elements and is capable of outputting a differential voltage between specified connection points, a magnetic field generating conductor for providing the magnetoresistive effect elements with a magnetic field in a direction opposite to that of the detection magnetic field by disposing a magnetic body near the center of the bridge circuit, a differential operation circuit which the differential voltage is input in and makes a feedback current flow to the magnetic field generating conductor, wherein the feedback current generates the magnetic field in a direction opposite to that of the detection magnetic field in the magnetic field generating conductor, and a voltage converting circuit for outputting the feedback current as a voltage value. The magnetic field generating conductor and the magnetoresistive effect elements are formed in the same stacked body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.