Arc lamp ballast

H - Electricity – 01 – J

Patent

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Details

H01J 61/56 (2006.01) H05B 41/14 (2006.01) H05B 41/288 (2006.01) H05B 41/292 (2006.01)

Patent

CA 2295412

A ballast for a mercury-free, metal halide arc lamp having a quartz or fused silica envelope. The ballast provides a square-wave voltage, which substantially reduces or eliminates the re-ignition voltage in the mercury-free, metal halide arc lamp. The ballast reverses the voltage polarity, and reestablishes the arc current in the opposite direction, before the free halogen in the envelope can quench the arc.

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