Electricity: measuring and testing – Magnetic – Displacement
Patent
1996-10-28
1999-03-02
Snow, Walter E.
Electricity: measuring and testing
Magnetic
Displacement
32420712, 324235, G01B 714, G01B 730, G01R 3306, F02B 5306
Patent
active
058776265
ABSTRACT:
The invention provides a sensing device capable of outputting a correct signal precisely corresponding to a particular position (angle) such as a protruding or recessed portion of a rotating member made of a magnetic material over the entire operating temperature range regardless of the temperature coefficient of the magnetic field sensing element. The sensing device includes: a magnet for generating a magnetic field; a rotary member of magnetic material for changing the magnetic field generated by the magnet, the rotary member being disposed at a predetermined distance apart from the magnet; a giant magnetoresistance device which changes in resistance in response to the magnetic field whose magnitude is changed by the rotary member of magnetic material; and an AC coupling circuit for performing an AC coupling process on the output of signal of the giant magnetoresistance device.
REFERENCES:
patent: 3622898 (1971-11-01), Salmon
patent: 5483162 (1996-01-01), Ushikoshi et al.
"Magnetoresistance of Multilayers" by H. Yamamoto et al, vol. 15, No. 5, 1991, Journal of Magnetics Society of Japan (no translation).
Fukui Wataru
Hiraoka Naoki
Ohashi Yutaka
Umemoto Hideki
Yokotani Masahiro
Mitsubishi Denki & Kabushiki Kaisha
Snow Walter E.
LandOfFree
Temperature resistant magnetoresistance sensing device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature resistant magnetoresistance sensing device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature resistant magnetoresistance sensing device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-426006