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. 25, 2017
Filed:
Feb. 10, 2010
Henry Shu Hung Chung, Hong Kong, HK;
Nan Chen, Hong Kong, HK;
Henry Shu Hung Chung, Hong Kong, HK;
Nan Chen, Hong Kong, HK;
City University of Hong Kong, Kowloon, HK;
E. Energy Double Tree Limited, Kowloon, HK;
Abstract
An apparatus that can operate with electronic ballasts () for electric discharge lamps to drive dc-powered lighting equipment () is provided. The apparatus is directly connected to the output of the electronic ballast () and is then used to control the power being supplied to the dc-powered lighting equipment (). The maximum power delivered to the dc-powered lighting equipment () is substantially equal to the rated output power of the electronic ballast (). A switching converter is acted as the necessary input impedance for the electronic ballast (). Thus, the active power and reactive power drawn from the electronic ballast () can be controlled. The output of the switching converter provides dc power for the dc-powered lighting equipment ().