Title:
POWER SUPPLY DEVICE, LIGHTING DEVICE, AND LIGHTING EQUIPMENT
Document Type and Number:
Japanese Patent JP2021118587
Kind Code:
A
Abstract:
To suppress noise caused by vibration of a choke coil.SOLUTION: A power supply device 1 includes: a pair of power supply terminals 10; a conversion circuit 11 for converting an AC voltage input from the pair of power supply terminals 10 into a DC voltage; and a filter circuit 12 that is provided between the pair of power supply terminals 10 and the conversion circuit 11. The filter circuit 12 has a plurality of choke coils (a first choke coil L1 and a second choke coil L2). Each of the plurality of choke coils is inserted into a path of current flowing from the pair of power supply terminals 10 to the conversion circuit 11. The plurality of choke coils are configured to weaken magnetic flux generated when a current flows.SELECTED DRAWING: Figure 1
Inventors:
KUSUDA SHUN
TAKEGUCHI NAOKI
TSURUOKA SHUNSUKE
TAKAMURA YUSUKE
KIDO HIROSHI
SEKI KEISUKE
TAKEGUCHI NAOKI
TSURUOKA SHUNSUKE
TAKAMURA YUSUKE
KIDO HIROSHI
SEKI KEISUKE
Application Number:
JP2020009462A
Publication Date:
August 10, 2021
Filing Date:
January 23, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
H02M7/12; H05B45/00
Domestic Patent References:
| JP2008210597A | 2008-09-11 | |||
| JP2006148519A | 2006-06-08 | |||
| JP2011019004A | 2011-01-27 | |||
| JPS5999523U | 1984-07-05 | |||
| JPH08182196A | 1996-07-12 | |||
| JP2014187811A | 2014-10-02 | |||
| JP2018129156A | 2018-08-16 |
Attorney, Agent or Firm:
Patent business corporation Hokuto patent office