Title:
MAGNETIC SENSOR
Document Type and Number:
Japanese Patent JP3033395
Kind Code:
B2
Abstract:
PURPOSE: To provide a magnetic sensor for generating a multi-phase pulse constantly with a fixed phase difference without being affected by the influence of ambient temperature.
CONSTITUTION: A detection signal output from magnetic resistance elements MR1 and MR2 is added to a pulse waveform shaping means 5, a differential means 6, a frequency-voltage conversion means 7, and a voltage controlled oscillation means 8 and is converted to a reference frequency signal with a constant amplitude. Therefore, even if the amplitude of the detection signal becomes unstable by receiving the influence of ambient temperature, the detection signal is converted to a reference frequency signal with a constant amplitude without being affected by the ambient temperature and is level- discriminated by a plurality of different voltage levels by a multi-phase pulse generation means 9, thus creating a multi-phase pulse with mutually constant phase difference.
Inventors:
Nobuhiro Ito
Application Number:
JP15787293A
Publication Date:
April 17, 2000
Filing Date:
June 03, 1993
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
G01B7/00; G01B7/30; G01D5/244; G01D5/245; G01P3/488; (IPC1-7): G01B7/30
Domestic Patent References:
| JP61210909A | ||||
| JP6129808A | ||||
| JP585060U |
Attorney, Agent or Firm:
Kiyoshi Igarashi