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:
Jul. 19, 2011
Filed:
May. 01, 2009
Ko-ming Lin, Hsin-Chu, TW;
Yen-ping Wang, Hsin-Chu, TW;
Pei-yuan Chen, Hsin-Chu, TW;
Wei-chuan Su, Hsin-Chu, TW;
Chia-chieh Hung, Hsin-Chu, TW;
Jian-shen LI, Hsin-Chu, TW;
Ko-Ming Lin, Hsin-Chu, TW;
Yen-Ping Wang, Hsin-Chu, TW;
Pei-Yuan Chen, Hsin-Chu, TW;
Wei-Chuan Su, Hsin-Chu, TW;
Chia-Chieh Hung, Hsin-Chu, TW;
Jian-Shen Li, Hsin-Chu, TW;
Grenergy Opto, Inc., Hsin-Chu, TW;
Abstract
The present invention discloses an electronic ballast with dimming control from power line sensing for a fluorescent lamp, comprising: a line switching sensing circuit, used to generate a switching sensing signal by performing a voltage comparison operation on a DC voltage, and generate a reset signal according to the off time of the power line; a dimming voltage generator, used to generate a dimming voltage according to a count of the switching sensing signal; and a phase-controlled non-overlapping driver, used to generate a high side driving signal and a low side driving signal for delivering a lamp current according to the dimming voltage, wherein the dimming voltage is used to generate a phase, and the phase is used to generate the lamp current.