Dual filament lamp and drive apparatus for dimmable avionics dis

Details Dual filament lamp and drive apparatus for dimmable avionics dis Dual filament lamp and drive apparatus for dimmable avionics dis

1992-04-30

1994-03-22

Pascal, Robert J.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Multiple filament load devices

315 65, 315 68, 315291, 315307, 315DIG4, 313558, 313549, H01J 744

Patent

active

052967832

ABSTRACT:
An improved dimmable dual filament fluorescent lamp including a first filament and a second filament with automatic current switching between the first element and the second element when the first element opens due to a failure and further having a separating cold cathode getter plate disposed between the first filament and the second filament.

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