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. 15, 2006
Filed:
Dec. 19, 2002
Oscar J. Deurloo, Rosmalen, NL;
Jonathan Hollander, Hod-Hasharon, IL;
Dimitry Orlov, Netanya, IL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention provides a high frequency electronic ballast with rail voltage switching which adjusts the DC rail voltage output () to account for different voltages of mains power (), improving efficiency. The rail voltage switching comprises a mains power supply () providing mains power () and a mains voltage signal (); a ballast microcontroller () responsive to the mains voltage signal () and generating a power factor correction (PFC) voltage signal (); and a converter () operably connected to the mains power supply () and responsive to the PFC voltage signal () to generate a DC rail voltage output (). For an embodiment using power factor control, the converter () comprises a coil (), power factor correction (), a switch (), and a rectifier ().