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:
May. 31, 2016
Filed:
Oct. 14, 2014
Applicant:
Samsung Electro-mechanics Co., Ltd., Suwon-Si, Gyeonggi-Do, KR;
Inventors:
Keun Wook Lee, Suwon-Si, KR;
Byoung Woo Ryu, Suwon-Si, KR;
Assignee:
Solum Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2006.01); H02M 7/06 (2006.01); H02J 3/00 (2006.01); H02M 3/158 (2006.01); H02M 3/335 (2006.01); H02M 7/10 (2006.01); H02M 7/5383 (2007.01); H02J 5/00 (2016.01); H02J 7/02 (2016.01); H02J 7/34 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0809 (2013.01); H02J 5/005 (2013.01); H02J 7/025 (2013.01); H02J 7/345 (2013.01); H02M 3/158 (2013.01); H02M 3/33507 (2013.01); H02M 3/33523 (2013.01); H02M 7/103 (2013.01); H02M 7/5383 (2013.01); H05B 33/0815 (2013.01); H05B 33/0851 (2013.01);
Abstract
A light emitting diode driver includes a power supplying unit receiving an alternating current (AC) power and outputting a transformed power according to a predetermined ratio, a rectifying unit rectifying the output power from the power supplying unit, and a double voltage unit receiving the rectified power from the rectifying unit and generating an output voltage such that the level of the output voltage is variable, and has constant duty and frequency thereof even the variance of the voltage level.