US Patent 9557044 LED lamp with dual mode operation
Patent 9557044 was granted and assigned to Energy Focus, Inc. on January, 2017 by the United States Patent and Trademark Office.
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An LED lamp has dual modes of operation from fluorescent lamp fixtures. A first circuit powers at least one LED in a first mode of operation when first and second power pins at a first end of the lamp are inserted into power contacts of the fixture that are directly connected to power mains. A second circuit powers at least one LED in a second mode of operation when the second power pin at the first end of the lamp and a third power pin at a second end of the lamp are inserted into power contacts of a fixture powered from an electronic ballast. First and second conduction control means permit the second circuit to power at least one LED during the second mode of operation.
US Patent 09557044 LED lamp with dual mode operation US Patent 9557044 LED lamp with dual mode operation
US Patent 09557044 LED lamp with dual mode operation
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