发明名称 |
Light-emitting diode driver |
摘要 |
A light-emitting diode (LED) driver used to power at least one LED with an alternating current (AC) voltage source is provided. The LED driver includes a rectifying unit applying N-fold higher voltage than the voltage from the AC voltage source to the LED. The rectifying unit includes a first charging unit to charge a first voltage, and a second charging unit to charge a second voltage. The first voltage includes the voltage at the AC voltage source during a first half-cycle of one AC voltage cycle, and the second voltage includes the first voltage and the voltage at the AC voltage source during the second half-cycle of the AC voltage cycle. Accordingly, the LED driver may improve light-emitting efficiency and reduce flicker of LEDs.
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申请公布号 |
US8461770(B2) |
申请公布日期 |
2013.06.11 |
申请号 |
US20100704881 |
申请日期 |
2010.02.12 |
申请人 |
YE KYUNG HEE;KANG HYUN GU;KAL DAE SUNG;SEO WON CHEOL;SEOUL SEMICONDUCTOR CO., LTD. |
发明人 |
YE KYUNG HEE;KANG HYUN GU;KAL DAE SUNG;SEO WON CHEOL |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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