Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Patent
1989-09-18
1990-10-16
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
324126, 324249, 324253, G01R 3300, H01F 304
Patent
active
049638181
ABSTRACT:
A current sensor having an element made of amorphous magnetic metal is disclosed herein. The current sensor includes an element located near a conductor and made of amorphous magnetic metal whose magnetic property varies in accordance with the intensity of a magnetic field generated from a current flowing through the conductor, magnet applying a DC-bias magnetic field to the element, a coil exhibiting electrical property corresponding to the magnetic property of the element, and output device for outputting a signal corresponding to the electrical property of the coil. The coil has a specific positional relationship with the element, such that at least part of the magnetic flux generated by the coil passes through the element.
REFERENCES:
patent: 3271665 (1966-09-01), Castro et al.
patent: 3562638 (1971-02-01), Renard
patent: 3621382 (1971-11-01), Valet
patent: 3626291 (1971-12-01), Yauch
patent: 4280093 (1981-07-01), Houston
patent: 4500838 (1985-02-01), Bloomer
patent: 4825166 (1989-04-01), MacGugan
Kikuchi Masaaki
Obama Masao
Eisenzopf Reinhard J.
Kabushiki Kaisha Toshiba
Nguyen Vinh P.
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