H - Electricity – 01 – J
Patent
H - Electricity
01
J
315/48
H01J 17/34 (2006.01) H05B 41/19 (2006.01)
Patent
CA 1116689
PHN 8375 28.3.77 ABSTRACT: The invention relates to a high-pressure sodium vapour discharge lamp which comprises a dis- charge tube provided with an external starting elec- trode. In accordance with the invention the lamp comprises a transformer wherein the secondary wind- ing of the transformer is connected between the starting electrode and a main electrode of the discharge tube, the primary winding of that trans- former being included in an oscillatory circuit including a glow starter. Also those further com- ponents of the starting circuit form part of the lamp. In this manner it is achieved that a proper starting of the lamp can be combined with only low requirements as regards the insulation near the input terminals of the lamp. Figure n..1. - 18 -
277710
Jacobs Cornelis A.j.
Rozenboom Jaap
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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