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:
Dec. 20, 2016
Filed:
Feb. 22, 2013
Koninklijke Philips N.v., Eindhoven, NL;
Haimin Tao, Eindhoven, NL;
William Peter Mechtildis Marie Jans, Born, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
The invention relates to LED replacement lamp suitable for operation with a high frequency fluorescent lamp ballast, comprising—a LED load (LS) comprising a series arrangement of LEDs, —a first lamp end circuit comprising—a first lamp pin (LP) and a second lamp pin (LP) for connection to a first lamp connection terminal comprised in the high frequency fluorescent lamp ballast, —a first rectifier (D-D; D, D) equipped with at least one input terminal coupled to the second lamp pin and with first and second output terminals coupled to respective ends of the LED load, the first rectifier comprising at least two diodes, one of which is shunted by a first capacitor (C), —a second lamp end circuit comprising—a third lamp pin (LP) and a fourth lamp pin (LP) for connection to a second lamp connection terminal comprised in the high frequency fluorescent lamp ballast, —a second rectifier (D-D, D, D) equipped with at least one input terminal coupled to the fourth lamp pin and with first and second output terminals coupled to respective ends of the LED load, the second rectifier comprising at least two diodes, one of which is shunted by a second capacitor (C), wherein the first capacitor and the second capacitor form a series arrangement coupled between the second lamp pin and the fourth lamp pin.