Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate
2007-12-18
2007-12-18
Owens, Douglas W. (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
C315S291000, C315S224000
Reexamination Certificate
active
11455796
ABSTRACT:
The present invention relates to an electronic ballast for discharge lamps, for example low-pressure discharge lamps, having a converter having a switching element and a two-part lamp inductor which is connected upstream and downstream of the discharge lamp. An electronic ballast according to the invention has a smoothing circuit which reduces voltage jumps caused by switching operations in the converter at the lamp terminals.
REFERENCES:
patent: 5925984 (1999-07-01), Fischer et al.
patent: 6426597 (2002-07-01), Rast et al.
patent: 6744220 (2004-06-01), Neidlinger
patent: 6876158 (2005-04-01), Trostl et al.
patent: 2002/0047602 (2002-04-01), Franck et al.
patent: 10 2005 028 672.0 (2005-06-01), None
Busse Olaf
Heckmann Markus
Lecheler Reinhard
Lechner Alfons
Mayer Siegfried
Bessone Carlo S.
Owens Douglas W.
Patent-Treuhand-Gesellschaft für elektrische Glühlampe
Vu Jimmy
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