Magnetic digital signal coupler having selected/reversal directions of magnetization
US6300617A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1999 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Mar 3, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/75
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A current determiner having an output at which representations of input currents are provided comprising an input conductor for the input current and a current sensor supported on a substrate electrically isolated from one another but with the sensor positioned in the magnetic fields arising about the input conductor due to any input currents. The sensor extends along the substrate in a direction at an angle to the extent of the input conductor and is formed of at least a pair of thin-film ferromagnetic layers separated by a nonmagnetic layer with one of these two ferromagnetic thin-film layers having a magnetization that is substantially maintained in a selected direction despite the magnetic fields arising from the input currents causing reversals of direction of magnetization of that remaining one of these two ferromagnetic thin-film layers. This first current sensor is spaced apart from the input conductor at least in part by a polymeric electrical insulating material, and the input conductor can be provided on a mechanically stiff base supported on such material and provided with an electric field interrupter supporting such material between the first current sensor and the in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.