Title:
【発明の名称】ポテンシヨメ-タ
Document Type and Number:
Japanese Patent JPH0777163
Kind Code:
B2
Abstract:
PURPOSE:To obtain a non-contact potentiometer characterized by excellent output linearity and a relatively high manufacturing yield rate, by relatively moving a ferromagnetic magnetoresistance element and a magneticfield generating means along a spefied line. CONSTITUTION:On an insulated substrate 1, a circular ferromagnetic magnetoresistance element 2, which has an opening part and comprises a thin film made of Ni-Fe, Ni-Co and the like, is formed. One end part of the opening part is connected to a power source Vcc, and the other end part is grounded. An output Vout is taken out of the intermediate point. A fan shaped permanent magnet 3 is attached to the insulated substrate 1, with a specified interval being provided from the ferromagnetic magnetoresistance element 2. The magnet 3 is rotated in the circumferential direction of the element 2, with the center of the element 2 as the center of the rotary axis. The absolute value of the intensity of the magnetic field generated by the magnet 3 is higher than the saturated magnetic field intensity of the element 2. When the permanent magnet 3 is rotated in the circumferential direction of the ferromagnetic magnetoresistance element 2, the resistance-value reduced part in the element 2 is continuously rotated and moved, and the value of the output Vout has linearity.
Inventors:
Kenichi Ao
Yoshino
Toshikazu Matsushita
Yoshino
Toshikazu Matsushita
Application Number:
JP7220186A
Publication Date:
August 16, 1995
Filing Date:
March 28, 1986
Export Citation:
Assignee:
Nippon Denso Co., Ltd.
International Classes:
H01L43/02; H01C10/00; (IPC1-7): H01C10/00; H01L43/02
Domestic Patent References:
| JPS5721882A | ||||
| JPS5415155A |
Attorney, Agent or Firm:
Hirohiko Usui (1 outside)
Next Patent: DIAPHRAGM PUMP