Low noise sodium vapor lamp for sonic pulse operation

Details Low noise sodium vapor lamp for sonic pulse operation Low noise sodium vapor lamp for sonic pulse operation

H - Electricity

01

J

313/10

H01J 61/52 (2006.01)

Patent

CA 1079342

ABSTRACT OF THE DISCLOSURE Jacketed high pressure sodium vapor lamps of con- ventional construction operated on sonic frequency pulses with short duty cycles in order to raise the color tem- perature produce excessive acoustic noise. The noise level is reduced by using non-magnetostrictive material for the inleads extending from the base into the outer envelope and including the portions embedded in the press of the stem, and for the frame parts that support the arc tube within the outer envelope.

285934

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