Patent ID: 6072280
Filing Date: 2000-06-06
Classification: H05B

Abstract:
A light string comprising:a pair of wires;an electrical interface adapted to interface with a standard voltage supply;a plurality of LEDs electrically coupled in series to form at least one series-parallel block,wherein each series-parallel block and the electrical interface are electrically coupled in parallel between each wire of the pair; andwherein the electrical interface further includes a voltage converter, the voltage converter adapted to convert a first voltage potential of the standard voltage supply to a second voltage potential across a pair of output terminals and between each wire of the pair; andwherein the voltage converter includes a transformer to convert between the first and second voltage potentials, and a ratio of the first and second voltage potentials being matched to an input voltage of the series-parallel block; andwherein the voltage converter includes at least two pairs of output terminals, each pair of output terminals providing the second voltage potential between the corresponding terminals, and the LED light string further comprises at least two pairs of wires, each pair of wires coupled to a respective pair of output terminals and at least one series-parallel block being electrically coupled between each pair of wires.