Designers of early indoor LED light bulbs faced numerous technical hurdles, including AC-to-DC conversion, thermal heat-sinking, constraints imposed by current bulb sizes, electrical transients, and ...
Aachen, Germany – Scientists from Philips Research have developed the first-ever organic light emitting diode (OLED) module that can be powered directly from a mains electricity supply. The prototype ...
WASHINGTON D.C. The ups and downs of Mr. Thomas A. Edison's inventions related to electrical lighting continue. After his U.S. Patent No. 223,898 for an "Electric Lamp" was found to be valid in the ...
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