H.C. Park & Associates, PLC
LED luminescence apparatus
An LED luminescence apparatus is provided, which includes a rectifying unit rectifying an AC voltage and generating a rectified voltage; a plurality of LEDs connected in series to an output terminal of the rectifying unit; a plurality of switches having drain terminals connected to cathodes of the plurality of LEDs, respectively; and a switch control unit sensing current through a plurality of resistors connected to source terminals of the plurality of switches, respectively, comparing the sensed current with a set reference current, and outputting a voltage corresponding to a difference between the sensed current and the set reference current to a gate terminal of each of the plurality of switches.
Seoul Semiconductor Co., Ltd.
H H H H H H Y
H05B H05B H05B H05B H05B H05B Y02B
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Snag Wook Young Do Hye Man Hyun Gu
Han Jung Jung Kang