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. 22, 2017
Filed:
Jul. 23, 2014
Philips Lighting Holding B.v., Eindhoven, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
An LED replacement lamp () is described. An LED lighting assembly () comprising LED lighting elements is electrically connected to filament emulation circuits, connected to electrical contacts at each of two opposite ends () of an elongated member. The filament emulation circuits () each comprise a first resistor circuit () and a second resistor circuit () connected to first and second electrical contacts (). The first and second resistor circuits () are connected to the LED lighting assembly () at a common terminal (). In order to provide an LED replacement lamp for safe operation even in cases of component failure, and if the replacement lamp () is used in incorrect wiring configurations, the first and second resistor circuits () each comprise a series connection of at least two resistors, in such a way that in case of failure of one of the resistors, the total resistance of the filament emulation circuits () remains above a determined resistance value.