Magnetic field sensor and current and/or energy sensor

Details Magnetic field sensor and current and/or energy sensor Magnetic field sensor and current and/or energy sensor

1996-10-23

1999-08-24

Karlsen, Ernest F.

Electricity: measuring and testing

Magnetic

Magnetometers

324117H, G01R 3306, G01R 1900

Patent

active

059428953

ABSTRACT:
A magnetic field sensor has two flux concentrators which serve to strengthen a magnetic field to be measured and which are separated by an air gap. Two Hall elements are arranged outside the air gap in such a way that at least a part of the field lines which lead from the first to the second flux concentrator pass through the two Hall elements in approximately opposite directions. Such a magnetic field sensor is less sensitive to external interference fields. It is suitable for the measurement of very weak magnetic fields and also for use as a current and/or energy sensor.

REFERENCES:
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patent: 3344347 (1967-09-01), Stevens
patent: 3425648 (1969-02-01), Wipff et al.
patent: 3885212 (1975-05-01), Herbert
patent: 4733177 (1988-03-01), Pawletko
patent: 4749939 (1988-06-01), Seitz
patent: 5057890 (1991-10-01), Falk et al.
patent: 5493216 (1996-02-01), Asa

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