Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit – Pulsating or a.c. supply to the cathode or heater circuit
Patent
1989-12-21
1991-04-02
Mis, David
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
Pulsating or a.c. supply to the cathode or heater circuit
335106, 335127, 335133, H05B 4136, H01H 6310, H01H 6700
Patent
active
050049542
ABSTRACT:
A three pole relay which operates in response to the flow of normal operating current across fluorescent lamps to activate a coil, the coil coperating a relay to open switches disposed in all of the filament lines associated with the lamp to shut off filament current while maintaining current flow across the lamps themselves.
REFERENCES:
patent: 3219781 (1965-11-01), Miller et al.
patent: 3866087 (1975-02-01), Powell
patent: 4009412 (1977-02-01), Latassa
patent: 4082981 (1978-04-01), Morton et al.
patent: 4339690 (1982-07-01), Regan et al.
patent: 4559478 (1985-12-01), Fuller et al.
patent: 4568860 (1986-02-01), Feinberg et al.
patent: 4661745 (1987-04-01), Citino et al.
Agranat Edward A.
Crisafulli Jerry
Fortier Richard C.
Johnson Severne
Kleven Lawrence P.
Haug John A.
McAndrews James P.
Mis David
Sharp Melvin
Texas Instruments Incorporated
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