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JPS54123808A - Magnetic shield unit - Google Patents

Magnetic shield unit

Info

Publication number
JPS54123808A
JPS54123808A JP3128978A JP3128978A JPS54123808A JP S54123808 A JPS54123808 A JP S54123808A JP 3128978 A JP3128978 A JP 3128978A JP 3128978 A JP3128978 A JP 3128978A JP S54123808 A JPS54123808 A JP S54123808A
Authority
JP
Japan
Prior art keywords
shield
magnetic
unit
thickness
constitution
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
Application number
JP3128978A
Other languages
Japanese (ja)
Inventor
Shiro Nakamura
Tatsue Nomura
Masatami Iwamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP3128978A priority Critical patent/JPS54123808A/en
Publication of JPS54123808A publication Critical patent/JPS54123808A/en
Pending legal-status Critical Current

Links

Landscapes

  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

PURPOSE: To enable to obtain greater shield effect by using less amount of shield material, through the constitution that the thickness of the shield material is changed with the amount of magnetic flux passed through.
CONSTITUTION: The magnetic shield unit 1 is of cylindrical shape as a whole and it is placed at the location orthogonal to the magnetic field HO, which is constituted so that the maximum thickness is present at the part of the line y-y'. This thickness is changed at each part of the shield material 1b so that no magnetic saturation is not caused according to the predicted value of HO. In this case, since the radil, external a and internal b, use the value intersecting the line x-x' having less amount of magnetic flux, the shield effect is higher than the result of equation (a) which normally obtains the shield factors S. Where: H is the magnetic field at the space 2 surrounded with the unit 1, and μ is the relative permeability of the unit 1. Althrough H in not uniform, and S can not be defined strictly by using the equation (a), it can greatly be improved for conventional cases to any region.
COPYRIGHT: (C)1979,JPO&Japio
JP3128978A 1978-03-17 1978-03-17 Magnetic shield unit Pending JPS54123808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3128978A JPS54123808A (en) 1978-03-17 1978-03-17 Magnetic shield unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3128978A JPS54123808A (en) 1978-03-17 1978-03-17 Magnetic shield unit

Publications (1)

Publication Number Publication Date
JPS54123808A true JPS54123808A (en) 1979-09-26

Family

ID=12327141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3128978A Pending JPS54123808A (en) 1978-03-17 1978-03-17 Magnetic shield unit

Country Status (1)

Country Link
JP (1) JPS54123808A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60948U (en) * 1983-06-17 1985-01-07 富士通株式会社 Magnetic shield mechanism
JP2013077698A (en) * 2011-09-30 2013-04-25 Seiko Epson Corp Magnetic shield

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60948U (en) * 1983-06-17 1985-01-07 富士通株式会社 Magnetic shield mechanism
JP2013077698A (en) * 2011-09-30 2013-04-25 Seiko Epson Corp Magnetic shield

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