Ballast

Details Ballast Ballast

1999-04-16

2000-11-14

Wong, Don

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315224, 315360, 315DIG5, 315DIG7, G05F 100

Patent

active

061474622

ABSTRACT:
In a ballast for parallel operation of discharge lamps in potentially explosive areas, an inverter is provided which has a branch which is assigned to the two discharge lamps, and in this respect is used twice. Two lamp-specific branches can be switched off separately if a fault occurs at the assigned discharge lamp.

REFERENCES:
patent: 4349748 (1982-09-01), Goldstein et al.
patent: 4460849 (1984-07-01), Virtanen
patent: 4554487 (1985-11-01), Nilssen
patent: 5363018 (1994-11-01), Shackle
patent: 5636111 (1997-06-01), Griffin et al.
patent: 5729097 (1998-03-01), Holzer
patent: 5959408 (1999-09-01), Steel et al.
patent: 6011358 (2000-01-01), Knobloch et al.

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