H - Electricity – 01 – J
Patent
H - Electricity
01
J
315/49
H01J 17/34 (2006.01) H01J 7/44 (2006.01) H01J 61/54 (2006.01)
Patent
CA 1163310
PHN.9217. ABSTRACT: The invention relates to a high-pressure sodium lamp which is provided with a discharge tube having an external auxiliary electrode. The auxiliary electrode is switched off by a bimetallic switch in the operating condition of the lamp. According to the invention the lamp also comprises a glow starter which in the operating condition of the lamp is switched off by means of the same bimetallic switch. As a result of this it is achieved in a simple manner that a large available voltage for igniting the discharge tube is combined with an operating condition of the lamp in which no disturbance is experienced from any of the ignition auxiliary means.
334762
Sneijers Andreas P.e.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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