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:
Oct. 21, 2014
Filed:
Jan. 12, 2012
Applicants:
Hyun-tak Kim, Daejeon, KR;
Bongjun Kim, Daejeon, KR;
Sun Shin Kwag, Goyang-si, KR;
Jun Sik Kim, Anyang-si, KR;
Inventors:
Hyun-Tak Kim, Daejeon, KR;
Bongjun Kim, Daejeon, KR;
Sun Shin Kwag, Goyang-si, KR;
Jun Sik Kim, Anyang-si, KR;
Assignees:
Electronics and Telecommunications Research Institute, Daejeon, KR;
Dongwon Systems Corporation, Anyang-Si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/10 (2006.01); G05F 3/02 (2006.01);
U.S. Cl.
CPC ...
G05F 3/02 (2013.01);
Abstract
The present inventive concept is a hyuntak transistor that can prevent a thermal runaway phenomenon and a low heat high efficiency constant current circuit using an auxiliary transistor capable of a high amplification and a constant current. The circuit may be applied to drive a LED and a motor.