Current sensor
US7679357B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2007 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Jan 21, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/077
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A current sensor for measuring an electric current flowing through a conductor includes a ring shaped magnetic core, a bare semiconductor chip, and a case. The magnetic core has a gap and surrounds the conductor. The bare semiconductor chip has a front surface and a vertical Hall effect element formed on the front surface. The bare semiconductor chip is arranged in the gap of the magnetic core to detect a magnetic field generated by the electric current. The magnetic core and the bare semiconductor chip are accommodated in the case. A back surface of the bare semiconductor chip is fixed in the case in such a manner that the front surface of the bare semiconductor chip is parallel to a direction of the magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.