Fluorescent lamp regulating system

Details Fluorescent lamp regulating system Fluorescent lamp regulating system

1986-10-16

1990-03-06

Safourek, Benedict V.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Plural load device systems

315122, 315189, 315201, H05B 4114

Patent

active

049068997

ABSTRACT:
One of the low voltage output windings of a standard ballast circuit is coupled to one filament of a pair of series connected fluorescent lamps by an external current controller. The current controller acts to restrictively reduce the operating voltage applied to the filaments of one of the lamps to which it is connected, below firing value during start up operation and thereafter maintain a lower running voltage for the lamps without adversely affecting restart.

REFERENCES:
patent: 4101806 (1978-07-01), Alley
patent: 4227118 (1980-10-01), Britton
patent: 4256993 (1981-03-01), Morton
patent: 4410836 (1983-10-01), Roche
patent: 4661745 (1987-04-01), Citino et al.

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