Inductor devices – Wound core
Patent
1992-03-25
1993-08-24
Kozma, Thomas J.
Inductor devices
Wound core
29605, 29607, 324260, 324233, H01F 2726, H02F 4102
Patent
active
052392902
ABSTRACT:
A magnetic core, for use in fluxgate magnetometers or gradiometers, for example, comprises a pair of coaxial coils constituted by strips of permeable magnetic 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 construction, the signal-to-noise ratio of saturable core measuring devices using the cores is substantially improved.
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patent: 4803773 (1989-02-01), Schonstedt
patent: 4839624 (1989-06-01), Schonstedt
Kozma Thomas J.
Schonstedt Instrument Company
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