VCC power | VF LED voltage regulator, driving voltage, IF forward current.
VCC为电源|稳压器电压，VF为LED驱动电压，IF为顺向电流。
In this paper, fundamental working principle of LED driving circuit and Power factor corrections (PFC) technique is given.
本文先阐述LED驱动电路和功率因数校正技术的基本原理。
Compared with other driving mode, switching power technology has high efficiency, so the thesis gives a LED driver in detail with switching power technology.
与其它恒流源驱动方式相比，开关电源技术有着高效灵活的优点，因此本文基于开关电源技术给出了一种LED驱动电路。
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