| 摘要 |
An LED light string employs a plurality of LEDs wired in block series- parallel, where the one or more series blocks, each driven at the same input voltage as the source voltage (110 VAC or 220 VAC), are coupled in parallel. The LED light string interfaces to the source voltage using a common househo ld plug; it may also include a corresponding common, household socket, coupled in electrical parallel, to enable multiple light strings to be connected to eac h other from end to end; it may also include AC-to-DC power conversion circuitry. LEDs of the light string may comprise either a single color LED o r an LED including multiple sub-dies each of a different color. The LED lenses may be of any shape, and may be either clear, clear-colored, or diffuse- colored. Moreover, each LED may have internal circuitry to provide for intermittent on-off blinking and/or intermittent LED sub-die color changes. Individual LEDs of the light string may be arranged continuously (using the same color), or periodically (using multiple, alternating colors), or pseudo - randomly (any order of multiple colors). Fiber optic bundles or strands may also be coupled to individual LEDs to diffuse LED light output in a predetermined manner. |
