Title:
ELECTRONIC APPARATUS, POWER FEEDING METHOD AND POWER FEEDING SYSTEM
Document Type and Number:
Japanese Patent JP2014200137
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To avoid inconvenience resulting from residual magnetism by demagnetizing magnetization generated during power feeding.SOLUTION: The electronic apparatus (charging platforms 4-1, 4-2, electronic apparatuses 6-1, 6-2) has a non-contact power feeding function including coils (12, 22) and includes current supply sections (14, 24). The coil generates a magnetic field (M1) with an energization current or generates a current by receiving a magnetic field. The current supply section supplies, after non-contact power feeding, a current running in the opposite direction to a current running through the coil during non-contact power feeding to the coil and generates a magnetic field (M2) with reverse polarity to a magnetic field generated during non-contact power feeding. The electronic apparatus demagnetizes magnetization generated by non-contact power feeding.
Inventors:
SHIN TAKAHIRO
KUMAKURA TORU
KUMAKURA TORU
Application Number:
JP2013074346A
Publication Date:
October 23, 2014
Filing Date:
March 29, 2013
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
H02J7/00; H01F13/00; H01F38/14; H01M10/46
Domestic Patent References:
| JPS54150645A | 1979-11-27 | |||
| JPS5913052U | 1984-01-26 | |||
| JP2000348938A | 2000-12-15 |
Foreign References:
| US4384313A | 1983-05-17 |
Attorney, Agent or Firm:
Shoichi Unemoto
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