H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/125
H01J 61/54 (2006.01)
Patent
CA 1116684
1 PHN 8981 ABSTRACT: The invention relates to an electrical high-pressure metal vapour discharge lamp provided with a discharge tube containing sodium and mercury as well as xenon. In the operating condition of the lamp the xenon pressure in the discharge tube is approximately 1600 torr. In accordance with the invention the dis- charge tube is provided with a narrow external strip- shaped coating extending along substantially the entire length of the discharge tube. This strip-shaped coat- ing consists of 80% Molybdenum, 10% A1203 and 10% CaO by volume. The strip-shaped coating acts as the starting electrode of the discharge tube.
317566
Esdonk Johannes Van
Jacobs Cornelis A.j.
Ruts Josephus M.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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