JPS641981A - Magnetic field detector - Google Patents
Magnetic field detectorInfo
- Publication number
- JPS641981A JPS641981A JP15802187A JP15802187A JPS641981A JP S641981 A JPS641981 A JP S641981A JP 15802187 A JP15802187 A JP 15802187A JP 15802187 A JP15802187 A JP 15802187A JP S641981 A JPS641981 A JP S641981A
- Authority
- JP
- Japan
- Prior art keywords
- elements
- magnetic field
- pulse
- detecting
- bridge
- 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.)
- Pending
Links
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
PURPOSE: To suppress the temperature rise of a detecting element due to the generation of Joule heat and improve the measuring accuracy by making an exciting current for the detecting element pulse-like and reducing the rate of a pulse width in a cycle period.
CONSTITUTION: Detecting elements 1 and 2 are constituted by applying windings to ferromagnetic pieces made of a material having a small coercive force and a large maximum permeability, for example, a cobalt amorphous alloy. A pulse- like exciting current having the small rate of a pulse width in a cycle period is supplied to the detecting elements 1 and 2 from a high frequency power supply 11 to magnetize the elements 1 and 2 over a saturated magnetic flux value. The detecting elements 1 and 2 are connected in a bridge. A difference between the inductances of the elements 1 and 2 brought about by an external magnetic field is outputted from the output end of the bridge. The external magnetic field is detected from the inductance difference.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15802187A JPS641981A (en) | 1987-06-25 | 1987-06-25 | Magnetic field detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15802187A JPS641981A (en) | 1987-06-25 | 1987-06-25 | Magnetic field detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH011981A JPH011981A (en) | 1989-01-06 |
JPS641981A true JPS641981A (en) | 1989-01-06 |
Family
ID=15662538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15802187A Pending JPS641981A (en) | 1987-06-25 | 1987-06-25 | Magnetic field detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS641981A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996019819A1 (en) * | 1994-12-22 | 1996-06-27 | Sumitomo Metal Mining Co., Ltd. | Magnetic correction circuit and picture display using it |
JP2007199069A (en) * | 2006-01-26 | 2007-08-09 | Commiss Energ Atom | Pulse excitation and sample detection flux gate type magnetometer |
US7382123B2 (en) * | 2003-06-04 | 2008-06-03 | Samsung Electronics Co., Ltd. | Micro fluxgate sensor and method of manufacturing the same |
WO2013111296A1 (en) * | 2012-01-26 | 2013-08-01 | 株式会社アイテス | Apparatus and method for inspecting solar cell panel |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5621782B2 (en) * | 1972-05-24 | 1981-05-21 |
-
1987
- 1987-06-25 JP JP15802187A patent/JPS641981A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5621782B2 (en) * | 1972-05-24 | 1981-05-21 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996019819A1 (en) * | 1994-12-22 | 1996-06-27 | Sumitomo Metal Mining Co., Ltd. | Magnetic correction circuit and picture display using it |
GB2301515A (en) * | 1994-12-22 | 1996-12-04 | Sumitomo Metal Mining Co | Magnetic correction circuit and picture display using it |
US5751112A (en) * | 1994-12-22 | 1998-05-12 | Sumitomo Metal Mining Co., Ltd. | CRT magnetic compensating circuit with parallel amorphous wires in the sensor |
GB2301515B (en) * | 1994-12-22 | 1998-10-07 | Sumitomo Metal Mining Co | Magnetic compensating circuit and image display using the same |
US7382123B2 (en) * | 2003-06-04 | 2008-06-03 | Samsung Electronics Co., Ltd. | Micro fluxgate sensor and method of manufacturing the same |
JP2007199069A (en) * | 2006-01-26 | 2007-08-09 | Commiss Energ Atom | Pulse excitation and sample detection flux gate type magnetometer |
WO2013111296A1 (en) * | 2012-01-26 | 2013-08-01 | 株式会社アイテス | Apparatus and method for inspecting solar cell panel |
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