Device for starting and supplying a fluorescent tube

Details Device for starting and supplying a fluorescent tube Device for starting and supplying a fluorescent tube

1997-09-04

1999-12-07

Philogene, Haissa

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315119, 315244, 315DIG5, G05F 100

Patent

active

059989424

ABSTRACT:
The present invention relates to a device for starting and supplying a fluorescent tube, including a resonant system connected to the tube and to a rectified supply circuit with a switch in series. A first detector controls the switch to turn off when the current provided by the supply exceeds a determined threshold; and a second detector controls the switch to turn on for each transition through zero of the voltage on a node of the resonant system and for each transition through a minimum of this voltage.

REFERENCES:
patent: 4477748 (1984-10-01), Grubbs
patent: 5032958 (1991-07-01), Harwood
patent: 5382882 (1995-01-01), Nerone
patent: 5426350 (1995-06-01), Lai
patent: 5444336 (1995-08-01), Ozawa et al.
patent: 5574335 (1996-11-01), Sun
patent: 5677602 (1997-10-01), Paul et al.

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