Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Patent
1989-11-13
1992-04-14
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
324209, G01R 1900, G01R 3302
Patent
active
051051460
ABSTRACT:
The invention relates to a current sensor which works with a toroidal body, through which at least one conductor to be evaluated is extended and from which a measuring signal is taken. The toroidal body (1) comprises a magnetostrictive material and conductor runs (2) of length-dependent resistance material are applied over at least one ring region of the toroidal body (1). The resistance changes of the conductor runs are evaluated to determine a value representative of the current (I) to be measured.
REFERENCES:
patent: 4232265 (1980-11-01), Smirnov
patent: 4622460 (1986-11-01), Failes et al.
Taylor, R.; "Current Sensing Device"; IBM Tech. Dis. Bull.; vol. 11; No. 8; Jan. 1969; p. 917.
Optics Letters, Band 6, No. 1, Jan. 1981, pp. 19-21, Optical Society of America, N.Y., S.C. Rashleigh; "Magnetic-field Sensing with a Single-Mode Fiber".
Journal of Physics E, Band 9, No. 6, Jun. 1976, pp. 451-454; R. D. Greenough et al.; "Strain Gauges for the Measurement of Magnetostriction in the Range 4K to 300K".
Abstract of Japanese Patent No. 56-151361 patented Mar. 2, 1982.
Karlsen Ernest F.
Simens Aktiengesellschaft
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