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:
Feb. 04, 2014
Filed:
Mar. 08, 2012
Ching-tsai Pan, Hsinchu, TW;
Po-yen Chen, Taipei, TW;
En-lin Chen, Taipei, TW;
Chih-lung Lee, Kaohsiung, TW;
Yu-chuan Wang, Tainan, TW;
Ching-Tsai Pan, Hsinchu, TW;
Po-Yen Chen, Taipei, TW;
En-Lin Chen, Taipei, TW;
Chih-Lung Lee, Kaohsiung, TW;
Yu-Chuan Wang, Tainan, TW;
National Tsing Hua University, Hsinchu, TW;
Abstract
A single stage electronic ballast with power factor correction is provided. The single stage electronic ballast can work under the present intensity discharge lamp without any change and provide higher efficient, lower power consumption of lighting system, and better lighting quality of lamps. The single stage electronic ballast can also provide a stable current to load (lamp) for a long time. The single stage electronic ballast includes a first switch and a second switch that are controlled with complementary switching so as to provide an output voltage in response to the input power source and the variation of the load.