Arc lamp lighting unit with low and high light levels

Details Arc lamp lighting unit with low and high light levels Arc lamp lighting unit with low and high light levels

H - Electricity

05

B

315/46

H05B 41/36 (2006.01) H05B 31/00 (2006.01)

Patent

CA 1153056

35-EL-1507 AN ARC LAMP LIGHTING UNIT WITH LOW AND HIGH LIGHT LEVELS ABSTRACT OF THE DISCLOSURE The present invention relates to a lighting unit having low and high light levels and employing an efficient arc lamp as the source of light during the high level setting. The unit employs a filamentary light source for the production of light during low light level operation, the filament acting as a resistive ballast for the arc lamp during high level operation. Practical embodiments operate in a conventional threeway light socket with the sequences being off, low, high and low, and off, low, high, and high.

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