The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 2014
Filed:
Dec. 28, 2012
Applicant:
Toshiba Lighting & Technology Corporation, Kanagawa, JP;
Inventors:
Yuji Takahashi, Kanagawa, JP;
Hirokazu Otake, Kanagawa, JP;
Noriyuki Kitamura, Kanagawa, JP;
Hiroshi Akahoshi, Kanagawa, JP;
Assignee:
Toshiba Lighting & Technology, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/52 (2006.01); H01J 5/02 (2006.01); H05B 37/02 (2006.01); H02M 1/12 (2006.01); H05B 37/00 (2006.01);
U.S. Cl.
CPC ...
H05B 37/02 (2013.01); H02M 1/126 (2013.01); H05B 37/00 (2013.01); H02M 2001/123 (2013.01);
Abstract
A power supply apparatus of an embodiment includes a first filter, a second filter, and a switching power supply. The first filter and the second filter attenuate a common mode current to a level lower than a normal mode current. The switching power supply is connected between the first filter and the second filter, and supplies electric power to an illumination load via the second filter.