Flicker preventing apparatus of fluorescent lamp

Details Flicker preventing apparatus of fluorescent lamp Flicker preventing apparatus of fluorescent lamp

2011-05-10

2011-05-10

Choi, Jacob Y (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S2090SC

Reexamination Certificate

active

07940012

ABSTRACT:
A fluorescent lamp controlling circuit reduces and/or prevents a fluorescent lamp from suddenly flickering when a power switch is turned on and/or off. Switching operation of a switch that supplies a direct current voltage to the fluorescent lamp is restricted during a transient period to delay a reset signal so that undesired flicker of the fluorescent lamp can be reduced and/or prevented.

REFERENCES:
patent: 6452343 (2002-09-01), Oostvogels et al.
patent: 6667587 (2003-12-01), Chang et al.
patent: 6774579 (2004-08-01), Abe
patent: 6998911 (2006-02-01), Honda et al.
patent: 2005/0023995 (2005-02-01), Ohnishi et al.

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