Electronic ballast system having emergency lighting provisions

Details Electronic ballast system having emergency lighting provisions Electronic ballast system having emergency lighting provisions

H - Electricity

05

B

H05B 41/14 (2006.01) G05F 1/70 (2006.01) H02J 9/06 (2006.01) H05B 41/16 (2006.01) H05B 41/285 (2006.01)

Patent

CA 2414543

An electronic ballast system is disclosed for operating one or more fluorescent lamps with and having a subsystem with universal input from 108V to 305V, a battery, along with a battery charger and associated logic, that provides for emergency lighting, as well as for operating at least one of the fluorescent lamps. The electronic ballast system includes a circuit that allows for a fluorescent lamp to be energized without the preheating of its cathodes, as well as includes a circuit for power factor correction that uses of an average current mode implemented by a pulse-width modulator to derive a power factor for the electronic power circuit that approaches unity.

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