Magnetism detecting device for canceling offset voltage

Details Magnetism detecting device for canceling offset voltage Magnetism detecting device for canceling offset voltage

2007-09-11

2007-09-11

Patidar, Jay M (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetometers

C324S244000, C324S247000, C033S356000

Reexamination Certificate

active

11230815

ABSTRACT:
A magnetism detecting device includes a magnetometric sensor, a bias magnetic field generating unit, a voltage applying unit, a detecting unit, and an operating unit. The detecting unit calculates a first output corresponding to a difference between two voltage values each corresponding to the positive and negative bias magnetic fields, and the positive voltage; and a second output corresponding to a difference between two voltage values each corresponding to the positive and negative bias magnetic fields, and the negative voltage. The detecting unit eliminates an offset voltage included in the first output and the second output by taking difference between the first output and the second output.

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European Search Report dated Jan. 16, 2006, from corresponding European Application No. 05255815.2.

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