LED light string and arrays with improved harmonics and optimized power utilization
First Claim
1. A light string comprising:
- a predetermined number of light emitting diodes (LEDs) and sockets forming individual electrical components electrically coupled in series to form at least one series block, each electrical component defining individual alternating current average drive voltages, the at least one series block having a first electrical component and a last electrical component;
an alternating current electrical power supply having an average supply voltage;
means for reducing harmonic distortion in said at least one series block.
2 Assignments
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Accused Products
Abstract
An AC driven LED light string assembly is provided possessing reduced harmonic distortion and improved electrical efficiency when one or more series blocks of LED lamps is employed. In one embodiment, there is provided an LED light string employing a capacitor coupled in parallel across the light string AC input, or end connector terminals. According to another embodiment, LED light strings are to be manufactured with a substantially equal number of light strings produced with all LEDs in forward bias (anode first) and reverse bias (cathode first). This allows true randomness when large numbers of single series block LED light strings are connected in an end-to-end manner. It is possible to apply this concept to single LED lamps having two chips where one chip is powered in reverse bias to the second chip; thereby providing self-canceling harmonics within the single LED lamp.
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Citations
25 Claims
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1. A light string comprising:
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a predetermined number of light emitting diodes (LEDs) and sockets forming individual electrical components electrically coupled in series to form at least one series block, each electrical component defining individual alternating current average drive voltages, the at least one series block having a first electrical component and a last electrical component;
an alternating current electrical power supply having an average supply voltage;
means for reducing harmonic distortion in said at least one series block. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 25)
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15. A light string comprising:
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a predetermined number of light emitting diodes (LEDs) and sockets forming individual electrical components electrically coupled in series to form at least one series block, each electrical component defining individual alternating current average drive voltages, the at least one series block having a first electrical component and a last electrical component;
an alternating current electrical power supply having an average supply voltage;
at least one additional circuitry component electrically connected to said at least one series block, said at least one additional circuitry component reducing harmonic distortion and improve power utilization in said at least one series block. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification