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:
Nov. 08, 2011
Filed:
Aug. 14, 2006
Norikazu Tateishi, Tokyo, JP;
Takashi Ohsawa, Tokyo, JP;
Norikazu Tateishi, Tokyo, JP;
Takashi Ohsawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A light emitting diode apparatus that includes a single DC/DC converter section that has two circuits connected in parallel: a flyback type boosting circuit and a boosting circuit. The former includes a transformer and a switching device and the like to boost DC voltage of a DC power supply, and the latter includes a transformer and a switching device and the like to do likewise. A control section carries out switching control of the switching devices and in such a manner that shifts from each other the phases of current Ida and current Idb to be supplied from the two boosting circuits and to a plurality of LED and the like connected in series in a light emitting section.