Low cost sensing system and method employing anistropic magneto-resistive ferrite member
US4414510A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 1980 |
| Grant date | Nov 8, 1983 |
| Priority date | — |
| Expiry date | May 28, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N50/85
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor comprising a member of ferromagnetic ferrite material having anistropic magneto-resistive properties wherein the resistivity characteristics of the ferrite member vary in response to variations in strength of a magnetic field applied longitudinally with respect to a selected longitudinal axis of the ferrite member. A magnetic field is impressed across the ferrite member with the magnetic lines of flux extending along the longitudinal axis of the ferrite member which exhibits variable magneto-resistive properties. A flow of electric current through the ferrite member along a current path that extends in the same direction or opposite to the direction of the magnetic lines of flux and changes in the value of the electric current flow through the ferrite member are measured as an indication of the value of a physical phenomena being sensed by the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.