Electricity: measuring and testing – Magnetic – Calibration
Patent
1995-06-07
1998-10-06
Snow, Walter E.
Electricity: measuring and testing
Magnetic
Calibration
3242072, G01R 3500, G01B 714
Patent
active
058182225
ABSTRACT:
An improved proximity detector comprising a hall effect sensor affixed to a permanent magnet, where the improvement comprises tuning the operational gradient of the magnetic field normal to the face of the detector. An apparatus and method for tuning the operational gradient of the magnetic field normal to the face of the detector is also discloses and utilizes means for generating magnetic fields parallel and perpendicular to the face of the magnetic proximity detector. The tuning apparatus changes the gradient through the application of magnetic tuning fields to the sensor magnetic, thereby changing the operational gradient axis, the operational gradient strength or both.
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Snow Walter E.
The Cherry Corporation
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