An 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 (D1-D6) connected to rectify said three-phase currents (L1, L2, L3) to produce a DC voltage across a first output and a second output of said rectifier; a plurality of LEDs connected in series across said first output and second output of said rectifier, and driven by said DC voltage produced by said rectifier at said first output and second output, the plurality of LEDs including a first set, comprising multiple LEDs connected in series, and a second set, comprising at least one LED, said first set and said second set being connected in series to said first output of said rectifier; a first constant current source connected to said second output of said rectifier and across said first set, said first constant current source including a first transistor having a control electrode; a second constant current source connected to said second output of said rectifier and across said second set, said constant current source including a second transistor having a control electrode; and a further transistor connected in series to said first transistor between said second output of said rectifier and the source electrode of said first transistor, wherein the collector electrode of the further transistor is connected to said second output of said rectifier, the source electrode of said first transistor is connected to the emitter electrode of the further transistor, the source electrode of said second transistor is connected to both the base electrode of said further transistor and the second output of said rectifier, the drain electrode of first transistor is connected to the plurality of LEDs in series between said first set and second set, and the drain electrode of second transistor is connected to the first output of said rectifier via said first set and second set of said plurality of LEDs; a constant voltage source is connected to the respective control electrodes of said first and second transistors that biases said control electrodes to place each of said first and second transistors in a conducting state; and wherein the further transistor is configured to turn off said first transistor while said second transistor is conducting; and said first and second sets have a forward voltage ratio with respect to each other of 8:1. 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 (D1-D6) connected to rectify said three-phase currents (L1, L2, L3) to produce a DC voltage across a first output and a second output of said rectifier; a plurality of LEDs connected in series across said first output and second output of said rectifier, and driven by said DC voltage produced by said rectifier at said first output and second output, the plurality of LEDs including a first set, comprising multiple LEDs connected in series, and a second set, comprising at least one LED, said first set and said second set being connected in series to said first output of said rectifier; a first constant current source connected to said second output of said rectifier and across said first set, said first constant current source including a first transistor having a control electrode; a second constant current source connected to said second output of said rectifier and across said second set, said constant current source including a second transistor having a control electrode; and a further transistor connected in series to said first transistor between said second output of said rectifier and the source electrode of said first transistor, wherein the collector electrode of the further transistor is connected to said second output of said rectifier, the source electrode of said first transistor is connected to the emitter electrode of the further transistor, the source electrode of said second transistor is connected to both the base electrode of said further transistor and the second output of said rectifier, the drain electrode of first transistor is connected to the plurality of LEDs in series between said first set and second set, and the drain electrode of second transistor is connected to the first output of said rectifier via said first set and second set of said plurality of LEDs; a constant voltage source is connected to the respective control electrodes of said first and second transistors that biases said control electrodes to place each of said first and second transistors in a conducting state; and wherein the further transistor is configured to turn off said first transistor while said second transistor is conducting; and said first and second sets have a forward voltage ratio with respect to each other of 8:1.