Method of triggering a high pressure sodium vapor lamp and sodiu

Details Method of triggering a high pressure sodium vapor lamp and sodiu Method of triggering a high pressure sodium vapor lamp and sodiu

1985-09-23

1987-04-14

Dixon, Harold

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Filament, electric heater, or resistance in shunt with the...

313 15, 315 46, 315 50, 315 73, 315290, H01J 744

Patent

active

046581847

ABSTRACT:
A high vacuum sodium vapor lamp whose discharge tube is surrounded by a heating coil connected in series with a switch opening to interrupt the heating after the lapse of a heating period sufficient to allow breakdown of the tube, is also provided with overvoltage protection and especially an element located in the lamp base, for limiting the autoinductive voltage poles to a level sufficient for breakdown of the tube but insufficient to allow breakdown between the terminals of the lamp.

REFERENCES:
patent: 3746914 (1973-07-01), Olson et al.
patent: 3757159 (1973-09-01), Gutta
patent: 4520294 (1985-05-01), Iida et al.
patent: 4567403 (1986-01-01), Ohtagaki et al.

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