Magnetic thin-film split-domain current sensor-recorder

Details Magnetic thin-film split-domain current sensor-recorder Magnetic thin-film split-domain current sensor-recorder

1977-03-16

1979-12-25

Corcoran, Robert J.

Electricity: measuring and testing

Magnetic

Magnetometers

324102, 324117R, G01R 3302, G01R 1904

Patent

active

041807758

ABSTRACT:
A sensor-recorder for recording a representation of the direction and peak amplitude of a transient current. A magnetic thin film is coated on a glass substrate under the influence of a magnetic field so that the finished film is magnetically uniaxial and anisotropic. The film is split into two oppositely magnetized contiguous domains with a central boundary by subjecting adjacent portions of the film simultaneously to magnetic fields that are opposed 180.degree.. With the split-domain sensor-recorder placed with the film plane and domain boundary either perpendicular or parallel to the expected conductive path of a transient current, the occurrence of the transient causes switching of a portion of one domain to the direction of the other domain. The amount of the switched domain portion is indicative of the amplitude of the peak current of the transient, while the particular domain that is switched is indicative of the direction of the current. The resulting domain patterns may be read with a passive magnetic tape viewer.

REFERENCES:
Matsushita et al.; Magneto optical Ammeter; IEEE Trans. on Mag.; vol. Mag.-6; No. 3; Sep. 1970; pp. 569-571.
Irons et al.; Fast Transient Recorder Using Magnetic Thin Films; Rev. of Scien. Inst. vol. 41, No. 10; Oct. 1970; pp. 1451-1456.
Hsieh et al., A Simple Method for Determining the Uniaxial Aniso. Dir. & Skew etc.; IEEE Trans. on Mag. vol. Mag. -7; No. 4; Dec. 1971; p. 910-911.
Wichner et al.; A Magnetic Thin Film etc.; Nuclear Science; vol. NS-19; No. 1; Feb. 1972; pp. 469-474.
Hsieh et al.; Measurement of Radiation Induced Transients etc., USERDA Report No. UCID--17269; Sep. 21, 1976; pp. 1-19.

Affiliated with

Also associated with

Rating

Magnetic thin-film split-domain current sensor-recorder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic thin-film split-domain current sensor-recorder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic thin-film split-domain current sensor-recorder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2072360