Led light string employing series-parallel block coupling

Details Led light string employing series-parallel block coupling Led light string employing series-parallel block coupling

1998-08-28

2000-06-06

Wong, Don

Electric lamp and discharge devices: systems

Plural series connected load devices

Christmas lights

315312, 315324, 315192, H05B 3700

Patent

active

060722800

ABSTRACT:
An LED light string employs a plurality of LEDs wired in a series-parallel block. Further, each series-parallel block may be coupled in parallel, the parallel connection coupled across a supply voltage through an electrical interface. LEDs of the light string may comprise either a single color LED or an LED including multiple sub-dies, each sub-die of a different color. LED series-parallel blocks of the light string may be operated in continuous, periodic or pseudo-random state. The LED light string may provide polarized connectors to couple LED light strings end-to-end and in parallel with the supply voltage. The electrical interface may have one or more parallel outputs and a switch so as to operate multiple LED light strings in continuous, periodic or pseudo-random states. The LED light string may be adapted so as to employ LEDs of different drive voltages in each series section of the series-parallel block. Fiber optic bundles may be coupled to individual LEDs to diffuse LED light output in a predetermined manner.

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patent: 5920827 (1999-07-01), Baer et al.
patent: 5924784 (1999-07-01), Chliwnyj et al.

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