Electric lamp and discharge devices: systems – With automatic shunt and/or cutout
Reexamination Certificate
2006-05-09
2006-05-09
Philogene, Haissa (Department: 2828)
Electric lamp and discharge devices: systems
With automatic shunt and/or cutout
C315S225000, C315S290000, C315S2090SC, C315S244000, C315SDIG002, C363S056030, C363S056120, C361S093600
Reexamination Certificate
active
07042161
ABSTRACT:
FA ballast (20) for powering a gas discharge lamp (70) comprises an inverter (200) and an arc protection circuit (600). Arc protection circuit (600) monitors an electrical signal within the ballast. In response to occurrence of a disturbance in the signal, such as what occurs during output arcing, arc protection circuit (600) disables the inverter (200) for a timed shutdown period. Arc protection circuit (600) provides a timed starting period for igniting the lamp, during which time any disturbance in the electrical signal is essentially ignored and inverter (200) is allowed to continue to operate. Arc protection circuit (600) also provides a restart function for periodically attempting to ignite and operate the lamp. Arc protection circuit (600) is preferably realized using a timer integrated circuit (U1) with associated discrete circuitry, and may be adapted for use with ballasts having self-oscillating or driven type inverters.
REFERENCES:
patent: 4488199 (1984-12-01), Bloomer
patent: 5619105 (1997-04-01), Holmquest
patent: 5751115 (1998-05-01), Jayaraman et al.
patent: 5751120 (1998-05-01), Zeitler et al.
patent: 5770925 (1998-06-01), Konopka et al.
patent: 5872429 (1999-02-01), Xia et al.
patent: 5883473 (1999-03-01), Li et al.
patent: 5945788 (1999-08-01), Li et al.
patent: 6037722 (2000-03-01), Moisin
patent: 6222322 (2001-04-01), Stack
patent: 6292339 (2001-09-01), Brooks
patent: 6400095 (2002-06-01), Primisser et al.
patent: 6720739 (2004-04-01), Konopka
patent: 6809483 (2004-10-01), Alexandrov
patent: 2002/0113559 (2002-08-01), Lam
patent: 2005/0046357 (2005-03-01), Stack
Labudda Kenneth D.
Osram Sylvania Inc.
Philogene Haissa
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