Dual tapped L2 supply configuration for TLED lamps

Abstract

The invention relates to a retrofit Light Emitting Diode, LED, lighting device for connecting to a fluorescent ballast, wherein the retrofit LED lighting device comprises a first end comprising a first power connection and a second power connection for receiving an output power from the fluorescent ballast and comprising a first relay, wherein the first power connection and the second power connection are coupled to a first single connector, wherein the first end is adapted to provide a first output and a second output, a second end comprising a third power connection and a fourth power connection for receiving an output power of the fluorescent ballast and comprising a second relay, wherein the third power connection and the fourth power connection are coupled to a second single connector, wherein the second end is adapted to provide a third output and a fourth output, wherein the first output is coupled to the third output and the second output is coupled to the fourth output, a light emitting diode, LED, load comprising a first set of one or more LEDs coupled to the first output and a second set of one or more LEDs coupled to the second output, wherein the first set of one or more LEDs and the second set of one or more LEDs are coupled in series, wherein the retrofit LED lighting device further comprises the first relay comprising a first relay switch and a first driving coil circuit, wherein the first relay switch is in a series connection between the first power connection or the second power connection and the LED load, and the second relay comprising a third relay switch and a second driving coil circuit, wherein the second relay switch is coupled between the third power connection or the fourth power connection and the LED load, wherein the first driving coil circuit is electrically coupled across the first set of one or more LEDs and the second driving coil circuit is electrically coupled across the second set of one or more LEDs.

Dependencies are inferred from the claim text.