Method and arrangement for remotely driving light emitting diodes from a three-phase power source via a single phase cable system

Light emitting diode (LED) drive circuitry, comprising:

• a rectifier comprising three inputs adapted for connection to a three-phase power source to respectively receive three-phase currents from said three-phase power source;
• said rectifier comprising a plurality of diodes connected to rectify said three-phase currents to produce a DC voltage across two outputs of said rectifier;
• a single phase power transmission system including two wires, respectively connected to said two outputs of said rectifier;
• a plurality of LEDs connected in series across said two wires at at least one location situated remote from said rectifier, and driven by said DC voltage produced by said rectifier at said two outputs, and being physically separated from said rectifier by said transmission system at said at least one location remote from said rectifier;
• and
• first and second current sources connected to the plurality of LEDs and across said two wires, the first current source being configured to drive a first LED of the plurality of LEDs based on said DC voltage, and the second current source being configured to drive the first LED and a second LED of the plurality of LEDs based on said DC voltage.