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:
Nov. 29, 2011
Filed:
Jul. 20, 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 control voltage generator, used to generate a control voltage according to a switching count of a power line; an oscillator, used to generate an oscillating signal, wherein the oscillating signal is of a fixed frequency and has a rising voltage portion and a falling voltage portion; and a comparator, used to generate a high side gating signal according to voltage comparison of the oscillating signal and the control voltage.