Microcontrolled ballast compatible with different types of gas discharge lamps and associated methods

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6501235
APP PUB NO 20020117976A1
SERIAL NO

09794306

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A ballast compatible with different types of gas discharge lamps includes a power supply and a controller connected to the power supply. The controller includes a memory having a plurality of desired operating parameters stored therein for respective different types of gas discharge lamps. A sensing circuit causes the power supply to supply a current to the gas discharge lamp prior to start-up and senses a voltage based thereon indicative of a type of the gas discharge lamp. A control circuit causes the power supply to provide the desired operating parameters based upon the type of gas discharge lamp. Since the desired operating parameters are applied to the gas discharge lamp, the life of the lamp is increased.

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Patent Owner(s)

  • STMICROELECTRONICS, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ortmeyer, Clifford J McHenry, IL 1 9

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