- 专利标题: LED luminescence apparatus
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申请号: US15296836申请日: 2016-10-18
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公开(公告)号: US09713213B2公开(公告)日: 2017-07-18
- 发明人: Hye Man Jung , Hyun Gu Kang , Snag Wook Han , Young Do Jung
- 申请人: Seoul Semiconductor Co., Ltd.
- 申请人地址: KR Ansan-si
- 专利权人: Seoul Semiconductor Co., Ltd.
- 当前专利权人: Seoul Semiconductor Co., Ltd.
- 当前专利权人地址: KR Ansan-si
- 代理机构: H.C. Park & Associates, PLC
- 优先权: KR10-2011-0146391 20111229; KR10-2011-0146392 20111229; KR10-2011-0146461 20111229
- 主分类号: H05B37/00
- IPC分类号: H05B37/00 ; H05B33/08
摘要:
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.
公开/授权文献
- US20170041991A1 LED LUMINESCENCE APPARATUS 公开/授权日:2017-02-09
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