Magneto-resistive sensors
US10718636B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2017 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Aug 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/093
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic position sensor having a substrate with an elongated, substantially continuous magneto-resistive section formed on the substrate. At least three electrodes are in contact with, and space at intervals along, the magneto-resistive section, thereby dividing the magneto-resistive section into at least first and second magneto-resistive regions. A magnet is configured to move in an direction which increases or decreases the magnetic field over the magneto-resistive layer, while a detection circuit configured to detect a change in voltage between the electrodes as the magnet moves from predominantly over the first magneto-resistive region to predominantly over the second magneto-resistive region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.