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. 02, 2014
Filed:
Jan. 18, 2011
Applicant:
Shinichiro Matsumoto, Numazu, JP;
Inventor:
Shinichiro Matsumoto, Numazu, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); H02M 3/335 (2006.01); G05F 1/00 (2006.01); H02M 3/156 (2006.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
G03G 15/80 (2013.01); H02M 3/156 (2013.01); G03G 15/5004 (2013.01); H02M 1/32 (2013.01);
Abstract
A power supply device includes, for example, a switching element, a rectifying circuit having a first rectifying element, and a control circuit which controls an output of the rectifying circuit. In particular, the power supply device includes a detection unit which detects a current flowing through the first rectifying element, and an output reduction unit which reduces the output of the rectifying circuit as an output of the switching power supply device. The output reduction unit changes a switching state of the switching element when the detection result of the detection unit exceeds a predetermined value.