The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 08, 1977
Filed:
Jun. 14, 1974
Shinjiro Takeuchi, Toda, JA;
Satoshi Ichioka, Toda, JA;
Masaki Shirosaka, Toda, JA;
Tadashi Inoue, Tokyo, JA;
Mishima Kosan Co., Ltd., Kitakyushu, JA;
Abstract
The orthogonal flux gate thin film magnetometer comprising an orthogonal flux gate utilizing a rotation magnetization mechanism consisting of a sensing coil wound on a plated wire formed by applying to a conductor a ferromagnetic thin film, an alternating excitation power means for exciting the thin film of the flux gate, an amplitude difference detection circuit means for detecting a difference between positive and negative asymmetrical peak values of the output voltage of the flux gate, and a control means for feedback of the output of the detection circuit to the sensing coil of the flux gate through a feedback circuit and for supplying the output of the control means to an indicating means. The magnitude and the polarity of the external magnetic field are sensed from the feedback current which erases the external magnetic field applied to the flux gate.