Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Filament or electric heater in series with a discharge...
Patent
1989-03-27
1991-01-22
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Filament or electric heater in series with a discharge...
315 94, 313619, H01J 6112, H01J 6156, H05B 4118
Patent
active
049873423
ABSTRACT:
A negative glow discharge lamp including an anode and an indirectly-heated cathode disposed within a phosphor-coated envelope. The cathode includes a heater filament surrounded by a metallic cylinder which is coated with an emissive material. The differential resistance of the heater filament is sufficient to internally ballast the flow discharge lamp.
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Bessone Carlo S.
GTE Products Corporation
LaRoche Eugene R.
Yoo Do Hyun
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