Title:
MAGNETIC SHIELDING DEVICE AND MAGNETIC SHIELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/201626
Kind Code:
A1
Abstract:
The present invention provides a method for electrically enhancing the intrinsic permeability of a soft magnetic material, and provides a magnetic shielding device that can avoid the use of expensive materials and can also avoid an increase in material input. A magnetic shielding device 1 according to the present invention comprises: a shielding element 10A that is made of a soft magnetic material; an electromagnetic coil 20A that is wound about the shielding element 10A; a power source 50 that supplies a current to the electromagnetic coil 20A; and a controller 40 that controls the current value I of the current to be supplied from the power source 50 to the electromagnetic coil 20A. The controller 40 sets the current value I on the basis of an external magnetic field He in the environment where the shielding element 10A is disposed.
Inventors:
ODAWARA SHUNYA (JP)
SAKAKIBARA MITSURU (JP)
SAKAKIBARA MITSURU (JP)
Application Number:
PCT/JP2021/041848
Publication Date:
September 29, 2022
Filing Date:
November 15, 2021
Export Citation:
Assignee:
OHTAMA CO LTD (JP)
International Classes:
H01F1/16; H05K9/00
Foreign References:
| JP2014060270A | 2014-04-03 | |||
| JP2012033795A | 2012-02-16 | |||
| JPH11223697A | 1999-08-17 |
Attorney, Agent or Firm:
OBA, Mitsuru et al. (JP)
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