Abstract：It is no doubt that the high-power hi-lite LED replaces incandescent lamp, fluorescent lamp. This paper indicates a high-power LED drive circuit which can directly make use of electric supply without a rectifier bridge. It gives an analysis of its working process, the relationship between input and output electric quantity and circuit structure parameter, and the harmonic distribution of importing exchange current. An efficient run is realized through using the circuit introduced in this paper, which completely applys to the character requirement of LED.In addition, the power factor of the drive circuit is very high while the degree of its electric current harmonic distortion is least.
曲振江, 周贵德. 照明用无桥LED驱动电路及其输入电流谐波分析[J]. 电工技术学报, 2010, 25(6): 137-143.
Qiu Zhenjiang, Zhou Guide. Illumination Bridgeless LED Drive Circuit and Analysis of Input Current Harmonic. Transactions of China Electrotechnical Society, 2010, 25(6): 137-143.
2010, Vol. 25 
