H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/135
H01J 61/56 (2006.01) H01J 5/56 (2006.01) H01J 61/74 (2006.01)
Patent
CA 1272754
ABSTRACT: The assembly has a low-pressure sodium discharge lamp (1), of which the outer envelope (4) has an elec- trically conducting coating (5), which is connected through a capacitor (29) to one of the current supply conductors (13) to the light source (33 of the lamp (1) and to the neutralconductor (18) of the feeding apparatus (2), which supplies an alternating voltage having a frequency of at least 80 kHz. The lamp holder (23) has an eccentrically arranged projection at its inner sur- face while the lamp cap (6) has an eccentrically arranged recess at its outer surface, which, when the lamp cap (6) is arranged in the lamp holder (23), engage with each other and guarantee a connection of the capacitor (29) to the neutral conductor (18). The lamp (1) is suitable for operation at mains voltage frequency and is still fitting into the lamp holder of mains vol- tage frequency equipment.
549370
Fetherstonhaugh & Co.
N.v. Philips Gloeilampenfabrieken
Sprengers Leo M.
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