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:
Aug. 16, 2011
Filed:
Apr. 30, 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 control voltage generator, used to generate a control voltage according to the count of said switching sensing signal; a voltage controlled oscillator, used to generate an oscillating signal according to the control voltage; and a non-overlapping driver, used to generate a high side driving signal and a low side driving signal according to the oscillating signal.