Amorphous magnetic alloy sensor

Details Amorphous magnetic alloy sensor Amorphous magnetic alloy sensor

1984-11-01

1986-12-02

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73DIG2, 336 20, 336 30, G01L 916

Patent

active

046255621

ABSTRACT:
A stress or strain sensor including a magnetic circuit having at least a part constituted by an amorphous magnetic alloy. For detection of the inductance value of the sensor, a DC magnetic field is superposed on an AC magnetic field so that magnetic domains of the alloy tend to be aligned. The sensor output can be increased significantly over that of the conventional sensor in which only the AC magnetic field is employed, while hysteresis of the output is reduced. The temperature characteristic is also improved.

REFERENCES:
patent: 3007063 (1961-10-01), Harris
patent: 4412454 (1983-11-01), Yamashita et al.

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