Mechanism for and method of biasing magnetic sensor

Details Mechanism for and method of biasing magnetic sensor Mechanism for and method of biasing magnetic sensor

2007-12-04

2007-12-04

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetometers

C324S202000, C324S260000

Reexamination Certificate

active

11251306

ABSTRACT:
A magnetic sensor package having a biasing mechanism involving a coil-generated, resistor-controlled magnetic field for providing a desired biasing effect. In a preferred illustrated embodiment, the package broadly comprises a substrate; a magnetic sensor element; a biasing mechanism, including a coil and a first resistance element; an amplification mechanism; a filter capacitor element; and an encapsulant. The sensor is positioned within the coil. A current applied to the coil produces a biasing magnetic field. The biasing magnetic field is controlled by selecting a resistance value for the first resistance element which achieves the desired biasing effect. The first resistance element preferably includes a plurality of selectable resistors, the selection of one or more of which sets the resistance value.

REFERENCES:
patent: 5896028 (1999-04-01), Arai
patent: 6028427 (2000-02-01), Kawase
patent: 6194897 (2001-02-01), Fukunaga
patent: 6879153 (2005-04-01), Kudo et al.
patent: 405172921 (1993-07-01), None
patent: 409126780 (1997-05-01), None
patent: 2002365350 (2002-12-01), None

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