Electronic ballast with inverter protection and relamping circui

Details Electronic ballast with inverter protection and relamping circui Electronic ballast with inverter protection and relamping circui

1997-05-30

1998-06-23

Lee, Benny

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch cut-out

315127, 315307, H05B 3702

Patent

active

057709254

ABSTRACT:
An electronic ballast (10) for powering at least one gas discharge lamp (20) comprising an AC-to-DC converter (100), an inverter (200), an output circuit (300), a relamping circuit (400), and an inverter protection circuit (500). Protection circuit (500) shuts down the inverter (200) in response to lamp removal or lamp failure. Following replacement of a failed lamp with an operational lamp, relamping circuit (400) provides restarting of the inverter (200) and ignition of the operational lamp by momentarily disabling the inverter protection circuit (500).

REFERENCES:
patent: 5010278 (1991-04-01), Kang
patent: 5047690 (1991-09-01), Nilssen
patent: 5051661 (1991-09-01), Lee
patent: 5066894 (1991-11-01), Klier
patent: 5262699 (1993-11-01), Sun et al.
patent: 5345148 (1994-09-01), Zeng et al.
patent: 5434480 (1995-07-01), Bobel
patent: 5461287 (1995-10-01), Russell et al.
patent: 5475284 (1995-12-01), Lester et al.
patent: 5479076 (1995-12-01), Moberg
patent: 5574336 (1996-11-01), Konopka et al.

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