Electricity: measuring and testing – Magnetic – Magnetic field detection devices
Patent
1990-11-27
1992-06-30
Wider, Kenneth A.
Electricity: measuring and testing
Magnetic
Magnetic field detection devices
324244, 324205, 361148, 361149, 361267, G01N 2772, G01R 33025, G01R 33038, G01R 3312
Patent
active
051266695
ABSTRACT:
Apparatus for characterizing the magnetic field of a device under test includes a device for nullifying the ambient magnetic field in a test environment area with a constant applied magnetic field, a device for rotating the device under test in the test environment area at least nearly through a complete circle, a device for sensing the magnetic field at a sensor location which is along the circumference of rotation as a function of the rotation angle for successive ones of a set of predetermined orientations of the device under test to obtain a profile of the magnetic field at the sensor location as a function of the rotation angle for each one of the predetermined orientations, a memory for storing the profiles, and a processor coupled to the memory for characterizing the magnetic field of the device from the magnetic field profiles thus obtained.
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Honess Shawn B.
McAuley James M.
Narvaez Pablo
Edmonds Warren S.
Jones Thomas H.
Manning John R.
Miller Guy M.
The United States of America as represented by the Administrator
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