Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch cut-out
Patent
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).
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Konopka John G.
Sodhi Sameer
Cunningham Gary J.
Labudda Kenneth D.
Lee Benny
Motorola Inc.
Vu David H.
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