JPS5642303A - Consecutively changeable device of magnetic field using permanent magnet - Google Patents
Consecutively changeable device of magnetic field using permanent magnetInfo
- Publication number
- JPS5642303A JPS5642303A JP11721379A JP11721379A JPS5642303A JP S5642303 A JPS5642303 A JP S5642303A JP 11721379 A JP11721379 A JP 11721379A JP 11721379 A JP11721379 A JP 11721379A JP S5642303 A JPS5642303 A JP S5642303A
- Authority
- JP
- Japan
- Prior art keywords
- groups
- magnet
- magnetic field
- consecutively
- permanent magnet
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
- H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
- H01F7/0284—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles using a trimmable or adjustable magnetic circuit, e.g. for a symmetric dipole or quadrupole magnetic field
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Particle Accelerators (AREA)
Abstract
PURPOSE:To change consecutively the magnetic field in the gap of the magnetic field consecutively changeable device by a method wherein plates of ferromagnetic material are provided in contact with the groups of permanent magnet being provided placing a gap between them at the inner confronting side faces of a magnetic yoke constituting a closed magnetic circuit, and the groups of permanent magnet are made to rotate respectively against the axis. CONSTITUTION:Groups of cylindrical permanent magnet 6A, 6B being made of rare earth magnets, etc., are drawn up in lines confronting with each other along the inner side faces 5A, 5B of a closed magnetic circuit in the yoke 5 consisting of a soft magnetic material having a high permeability like iron, etc., constituting the inside in -shape. The groups of magnet 6A, 6B are magnetized in the diametrical direction of axis as shown with arrow marks. The plates 7 consisting of magnetic material having high permeability are provided in contact with the groups of magnet 6A, 6B respectively to obtain a uniform magnetic field in the gap 8 between the confronting groups of magnet 6A, 6B. With this construction, by rotating being linked around the axis the whole of magnet group 6A, or the whole of magnet group 6B, or the whole of 6A and 6B to equalize the magnetization direction, the magnetic field in the gap 8 can be consecutively changed widely and uniformly using a small- sized device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54117213A JPS5846163B2 (en) | 1979-09-14 | 1979-09-14 | Continuous magnetic field variable device using permanent magnets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54117213A JPS5846163B2 (en) | 1979-09-14 | 1979-09-14 | Continuous magnetic field variable device using permanent magnets |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5642303A true JPS5642303A (en) | 1981-04-20 |
JPS5846163B2 JPS5846163B2 (en) | 1983-10-14 |
Family
ID=14706185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54117213A Expired JPS5846163B2 (en) | 1979-09-14 | 1979-09-14 | Continuous magnetic field variable device using permanent magnets |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5846163B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007129050A (en) * | 2005-11-02 | 2007-05-24 | Japan Science & Technology Agency | Magnetic circuit of permanent magnet, and permanent magnet device using same |
JP2020165868A (en) * | 2019-03-29 | 2020-10-08 | 宮城県 | Magnetic field generation mechanism and foreign matter inspection device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50138600U (en) * | 1974-04-30 | 1975-11-14 |
-
1979
- 1979-09-14 JP JP54117213A patent/JPS5846163B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50138600U (en) * | 1974-04-30 | 1975-11-14 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007129050A (en) * | 2005-11-02 | 2007-05-24 | Japan Science & Technology Agency | Magnetic circuit of permanent magnet, and permanent magnet device using same |
JP2020165868A (en) * | 2019-03-29 | 2020-10-08 | 宮城県 | Magnetic field generation mechanism and foreign matter inspection device |
Also Published As
Publication number | Publication date |
---|---|
JPS5846163B2 (en) | 1983-10-14 |
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