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:
Jan. 11, 2011
Filed:
Dec. 08, 2005
Ramakrishnan Venkatraman, Aurora, IL (US);
Romel Panlilio, St. Charles, IL (US);
Ramakrishnan Venkatraman, Aurora, IL (US);
Romel Panlilio, St. Charles, IL (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An electronic ballast with higher startup voltage includes converter with a switching circuit () responsive to a switching control signal () and operably connected to a DC bus (); a DC controller () comparing a sensed DC bus voltage signal and a reference DC bus voltage signal to generate the switching control signal (); and a startup adjustor operably connected to the DC controller () to adjust at least one of the sensed DC bus voltage signal and the reference DC bus voltage signal for a predetermined time at startup so that startup DC bus voltage is greater than steady state DC bus voltage.