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:
Jun. 26, 2018
Filed:
Nov. 22, 2010
Yuhong Fang, Naperville, IL (US);
Arun Ganesh, Aurora, IL (US);
Guangyi Luo, Shanghai, CN;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
An electronic ballast with power thermal cutback including an electronic ballast operably connected to provide power to a lamp, the electronic ballast having a PFC converter (HO) operable to receive a PFC input voltage () and operable to provide a DC bus voltage on a DC bus (); a DC/AC converter () operable to receive the DC bus voltage from the DC bus () and to provide AC power () to the lamp () at an AC output frequency; a compensator () responsive to an electronic ballast condition parameter, the compensator () being operable to provide a compensator signal to at least one of the PFC converter () and the DC/AC converter (). At least one of the PFC converter () and the DC/AC converter () is responsive to the compensator signal to reduce the power to the lamp () when the electronic ballast condition parameter passes a threshold.