Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2006-05-22
2008-07-08
Owens, Douglas W. (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S307000, C315S308000
Reexamination Certificate
active
07397200
ABSTRACT:
The invention relates to a device for the control of fluorescent lamps in a lighting arrangement that comprises at least one such fluorescent lamp, wherein for each fluorescent lamp the device has the following characteristics: a capacitive voltage divider consisting of a first capacitor and a second capacitor that are connected in series to the fluorescent lamp, a switch that is connected in parallel to one of the capacitors, means of measuring the momentary lamp current that flows through the fluorescent lamp and a control circuit to generate an input signal for the semiconductor switch depending on the momentary lamp current.
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Dunae Morris LLP
Minebea Co. Ltd.
Owens Douglas W.
Vu Jimmy T
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