Patent ID: 7053560

Claim:
A lighting arrangement comprising: a source of electrical power; m pairs of light-emitting diodes (LEDs), each pair of LEDs including a first LED and a second LED, driven by the power source and connected in parallel in each of n parallel paths such that an anode of the first LED in each pair is electrically connected to a cathode of the second LED in the pair, and an anode of the second LED in each pair is electrically connected to a cathode of the first LED in the pair, one of each pair of LEDs thereby being forward biased to produce light regardless of the instantaneous polarity of electrical current supplied to the LED pair by the power source; a current-limiting device, connected in series between the power source and each LED pair; in which: the m pairs of LEDs in each respective parallel path are connected in series; the n parallel paths share common power connections but are otherwise electrically separated from each other such that electrical current entering each parallel path passes through the m series-connected LED pairs of only that parallel path; and m is a predetermined positive integer; and n is a predetermined positive integer greater than one.