ENERGY SAVING LUMENS SETTABLE DEVICE FOR FLUORESCENT LAMPS
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United States of America Patent
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Issued Date -
Aug 12, 2010
app pub date -
Apr 15, 2008
filing date -
May 10, 2007
priority date (Note) -
Abandoned
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Abstract
A circuit to supply an AC voltage to a fluorescent lamp load from an AC supply converts the supply to DC, boosts the voltage in a converter and then drives an inverter from the smoothed boosted voltage in such a manner that the inverter will not start if the load is too low and the inverter frequency is almost constant. The power factor of the circuit is maintaining very close to unity.
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