Intimate contact starting aid for arc lamps

Details Intimate contact starting aid for arc lamps Intimate contact starting aid for arc lamps

H - Electricity

01

J

313/10

H01J 61/54 (2006.01)

Patent

CA 1194073

-7- INTIMATE CONTACT STARTING AID FOR ARC LAMPS ABSTRACT A high pressure sodium discharge lamp employing a starting aid in the form of a refractory metal wire wrapped helically around the arc tube allows the use of increased xenon pressure for higher efficacy. The starting aid is positioned far enough from the ends of the electrodes so that end blackening does not attenuate the starting pulse and render the lamps impossible to start after they have been aged over 100 hours.

420344

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