Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate
2007-10-18
2010-06-29
Owens, Douglas W (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
C315S291000, C315S308000
Reexamination Certificate
active
07746006
ABSTRACT:
The present invention discloses a protection architecture for a multi-lamp system, which applies to a multi-lamp driving system for driving a plurality of lamp loops. The present invention is characterized in that two opposite-phase loads of a loop are separately defined to be a first load and a second load, and that a voltage-division/detection loop is formed via cascading a first voltage-division element to a second voltage-division element and is coupled to between the first load and the second load to detect an abnormal current, wherein the second voltage-division element is coupled to a ground terminal, and wherein a signal-acquiring terminal is coupled to between the first voltage-division element and the second voltage-division element and acquires an abnormal voltage signal for a protection unit from the abnormal current, and wherein the protection unit detects the abnormal voltage signal and shuts off the driving system.
REFERENCES:
patent: 2006/0038508 (2006-02-01), Lin et al.
patent: 1243629 (2005-11-01), None
Cher Chien Chih
Hsu Ken Chuan
Lee Kuo Hei
Liang Shih An
Chen Jianzi
FSP Technology Inc.
Muncy Geissler Olds & Lowe, PLLC
Owens Douglas W
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