Electricity: measuring and testing – Magnetic – Magnetic field detection devices
Patent
1996-03-29
1999-11-30
Strecker, Gerard
Electricity: measuring and testing
Magnetic
Magnetic field detection devices
324117R, 324244, 360110, G01R 3302, G11B 5127, H01F 1153
Patent
active
059948990
ABSTRACT:
A magneto-impedance element includes an amorphous wire having a spiral magnetic anisotropy. A dc-biased alternating current is supplied to the amorphous wire, whereby a voltage is produced between both ends of the amorphous wire. The amplitude of the voltage varies asymmetrically with a variation in an externally applied magnetic field. The magneto-impedance element is compact, and has a high sensitivity and a high response speed.
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patent: 5298689 (1994-03-01), Mohri et al.
patent: 5734267 (1998-03-01), Senda et al.
Uchiyama et al; "Colpitts oscillator type . . . using . . . MI elements", Japan Applied Magnetic Society Academic Lecture Abstracts, 1994 (no month).
Noda et al; "Magneto-Impedance Effect . . . Asymmetrical Current", Journal of the Magnetics Society of Japan vol. 19 No. 2, 1995 (no month).
T. Kitoh et al, Asymmetrical Magneto-Impedance Effects Twisted Amorphous Wires for Sensitive Magnetic Sensors, IEEE Transactions on Magnetics, vol. 31, No. 6, Nov. 1995; pp. 3137-3139.
Research Development Corporation of Japan
Strecker Gerard
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