Visible perception of brightness in miniature bulbs for an ornamental lighting circuit
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United States of America Patent
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Dec 14, 2010
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app pub date -
Dec 21, 2007
filing date -
Dec 22, 2006
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Abstract
Ornamental light strings are commonly made of a plurality of miniature light bulbs connected together, often in series, to make a light string. This invention is directed to optimizing the perceived brightness while reducing heat in each bulb. This is a particular problem where resistor bypass circuits are used where a bypass resistor being connected in parallel with at least one of the respective light sources, each respective light source being low wattage and being capable operating on a one hundred percent duty cycle as desired. Improvements are accomplished by changes in placement of the filament, its windings and materials.
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