H - Electricity – 05 – B
Patent
H - Electricity
05
B
315/67
H05B 41/16 (2006.01) H05B 41/04 (2006.01) H05B 41/36 (2006.01)
Patent
CA 1178651
PHN 9984 15 ABSTRACT: Electric device comprising at least one low- pressure mercury vapour discharge tube, which device is intended to be connected to an a.c. voltage source the frequency of which is 50 to 60 Hz. According to the inven- tion, the discharge tube is of a type which produces a comparatively large current distortion and has a propor- tionally low required reignition voltage. The electric device has only small electric losses. Furthermore, the discharge tube remains operative even at small deviations of the nominal mains voltage.
398700
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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