A RETROFIT LIGHT EMITTING DIODE, LED, TUBE FOR REPLACING A FLUORESCENT TUBE

A retrofit Light Emitting Diode, LED, tube for replacing a fluorescent tube, wherein said retrofit LED tube is arranged to be connected to a ballast, said retrofit LED tube comprising a ballast determining unit arranged for identifying a type of ballast connected to said retrofit LED tube by control...

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Bibliographische Detailangaben
Hauptverfasser:	TAO, Haimin, ARULANDU, Kumar, CHOW, Wai Pang, VAN HEES, Ger, ABBO, Anteneh Alemu, ACKERMANN, Bernd, STOBBELAAR, Pieter Johannes
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A retrofit Light Emitting Diode, LED, tube for replacing a fluorescent tube, wherein said retrofit LED tube is arranged to be connected to a ballast, said retrofit LED tube comprising a ballast determining unit arranged for identifying a type of ballast connected to said retrofit LED tube by controlling an output voltage of said power rectifier to a first voltage and measuring a first current provided by said power rectifier, controlling said output voltage of said power rectifier to a second voltage and measuring a second current provided by said power rectifier, wherein said second voltage differs from said first voltage and determining said type of ballast based on said first and second output voltages and said measured first and second currents, wherein said ballast determining unit is further arranged to configure said configurable matching circuit based on said determined type of ballast.