Current and Magnetic Field Sensors, Control Method and Magnetic Core For Said Sensors
AssigneeBillanco
InventorLuc Lenglet
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Abstract
The invention relates to a magnetic field sensor comprising at least one magnetic core (10) in which the magnetic cycle of the magnetic core is characterised in that the absolute value of the third derivative of the magnetic flux density in relation to the magnetic field is maximum for a zero magnetic field.
Claims41
A magnetic core adapted for being implemented in a magnetic field sensor, it, wherein the magnetic core is made from a material comprising a solid matrix in which are dispersed superparamagnetic particles, the solid matrix being chosen so as not to perturb the magnetic properties of the superparamagnetic particles.
A magnetic field sensor comprising:
- at least one magnetic core (10;
- 56;
- 62),
- and an electronic circuit tied to the magnetic core and able to measure a magnetic field induced in the magnetic core,
- wherein the magnetic core is such that its magnetic cycle exhibits a third derivative of the magnetic induction with respect to the magnetic field induced in the core whose absolute value is a maximum for a zero magnetic field.
Dependencies are inferred from the claim text.