H - Electricity – 01 – F
Patent
H - Electricity
01
F
H01F 3/04 (2006.01) G01R 33/04 (2006.01) H01F 27/25 (2006.01) H01F 41/02 (2006.01)
Patent
CA 2092260
Abstract of the Disclosure A magnetic core, for use in fluxgate magnetometers or gradiometers, for example, comprises a pair of coaxial coils constituted by strips of permeable mag- netic material oppositely wound on a non-magnetic cylindrical tube. At each of their opposite ends, the coils terminate in planes perpendicular to the length of the tube. In the manufacture of a core, the strips at each end of the coils may be joined to each other to form a lap extending along the length of the tube. In one embodiment, strip portions extending beyond the respective planes, including a portion of each lap, are cut off and removed. In another embodiment, the entire lap at each end is removed after the strips at each end are welded to each other. By virtue of the core con- struction, the signal-to-noise ratio of saturable core measuring devices using the cores is substantially improved.
Gowling Lafleur Henderson Llp
Schonstedt Instrument Company
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