JPS5672368A - Magnetic sensor - Google Patents
Magnetic sensorInfo
- Publication number
- JPS5672368A JPS5672368A JP14939379A JP14939379A JPS5672368A JP S5672368 A JPS5672368 A JP S5672368A JP 14939379 A JP14939379 A JP 14939379A JP 14939379 A JP14939379 A JP 14939379A JP S5672368 A JPS5672368 A JP S5672368A
- Authority
- JP
- Japan
- Prior art keywords
- magnetization
- inner core
- external skin
- coil
- magnetizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
PURPOSE: To make sensitive to even a weak local magnetic field, by specifying the magnetizing method of an external skin and ab inner core.
CONSTITUTION: At a small part of one end of an external skin 1 of a magnet wire having high coercive force at the external skin 1 and low coercive force in the inner core 2, is given with reverse magnetization to the magnetizing direction for other parts, and after magnetizing the inner core 2 in the same direction as the small part of one end of the external skin 1, a coil 5 which inverts the direction of magnetization of the inner core 2, and a detection coil 4 are wound on the magnet wire. Thus, the detection coil 4 is connected to an oscilloscope and the magnetization inversion coil 5 is connected to a DC power supply. When the voltage of the DC power supply is gradually incrased so that the magnetic field reverse to the magnetization direction of the inner core 2 can be produced, a voltage accompanied with the inversion of magnetization is produced to the detection coil 4 and the voltage pulse can be observed with the oscilloscope.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14939379A JPS5672368A (en) | 1979-11-16 | 1979-11-16 | Magnetic sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14939379A JPS5672368A (en) | 1979-11-16 | 1979-11-16 | Magnetic sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5672368A true JPS5672368A (en) | 1981-06-16 |
JPS6133471B2 JPS6133471B2 (en) | 1986-08-02 |
Family
ID=15474138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14939379A Granted JPS5672368A (en) | 1979-11-16 | 1979-11-16 | Magnetic sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5672368A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003075519A (en) * | 2001-09-04 | 2003-03-12 | Shinkawa Denki Kk | Magnetization reversal element |
KR100869035B1 (en) * | 2001-06-15 | 2008-11-17 | 바이오센스, 인코포레이티드 | Position sensor having core with high permeability material |
-
1979
- 1979-11-16 JP JP14939379A patent/JPS5672368A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100869035B1 (en) * | 2001-06-15 | 2008-11-17 | 바이오센스, 인코포레이티드 | Position sensor having core with high permeability material |
JP2003075519A (en) * | 2001-09-04 | 2003-03-12 | Shinkawa Denki Kk | Magnetization reversal element |
Also Published As
Publication number | Publication date |
---|---|
JPS6133471B2 (en) | 1986-08-02 |
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