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:
Jan. 12, 2016
Filed:
Oct. 30, 2014
Samsung Electro-mechanics Co., Ltd., Suwon-Si, Gyeonggi-Do, KR;
Jae Kuk Kim, Daejeon-si, KR;
Dong Kyun Ryu, Seoul, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon-Si, Gyeonggi-Do, KR;
Abstract
A switching mode power supply apparatus includes a main transformer converting DC voltage of a predetermined amplitude supplied from a voltage source into DC voltage of a different amplitude; an auxiliary transformer operated by receiving current flowing in a primary winding of the main transformer; a first semiconductor switching element turning on/off an LED array that is driven by receiving voltage from a secondary winding of the auxiliary transformer; and an auxiliary circuit disposed in an LED control circuit unit including the LED array and the first semiconductor switching element, wherein the auxiliary circuit distributes current flowing in the first semiconductor switching element so as to reduce heat generated in the first semiconductor switching element.