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. 28, 2008
Filed:
Jul. 29, 2004
Applicant:
Tai Shan Liao, Taichung, TW;
Inventor:
Tai Shan Liao, Taichung, TW;
Assignee:
Precision Instrument Development Center, Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/321 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit apparatus for driving a light emitting diode with a low voltage is disclosed. The circuit apparatus includes an NPN transistor, a PNP transistor, a capacitor connected to a base of the NPN transistor, a resistor connected to a contact point between the base of the NPN transistor and the capacitor and connected to the power, and an inductor connected to the power ground and a collector of the PNP transistor.