Direct current measuring device having magnetic sensors for current generated magnetic fields
US7821253B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2007 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Jan 11, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A direct current measuring device having at least one first magnetic sensor and at least one second magnetic sensor sensitive to a magnetic field generated by an electric current flowing in a conductor. The measuring device includes a processing unit connected to the magnetic sensors and generates an output signal dependent on measurement signals supplied by the magnetic sensors. The processing unit includes selection means supplying the output signal and is dependent, for weak electric currents, on the first measurement signals from a first magnetic sensor, and is dependent, for strong electric currents, on the second measurement signals from a second magnetic sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.