Voltage sensing apparatus for power regulation and over-voltage protection of discharge lamp and method thereof
The configurations of a discharge lamp system and a controlling method thereof are provided in the present invention. The proposed discharge lamp system includes a discharge lamp, a converter circuit coupled to the discharge lamp and having a switching switch, a ballast controller generating a first driving signal and controlling the switching switch accordingly, and a voltage sensing apparatus receiving the first driving signal and generating a sensed voltage accordingly, wherein the discharge lamp is switched among a plurality of operating modes according to the sensed voltage.
Delta Electronics, Inc.
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Jianping Qi Weigiang
Ying Zhang Zhang