直流 LED 光源驱动电路的选择与应用

doi:10.16039/j.cnki.cn22-1249.2018.03.017

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摘要 LED 作为二十一世纪的绿色照明光源而被广泛关注，其发光原理不同于传统光源，直流 LED 采用直流
驱动发光，而传统光源是交流驱动发光，如果 LED 驱动电路出现故障，那么 LED 光源也就无法正常发光，因此
直流 LED 光源的驱动电路对其灯具整体寿命至关重要．本文首先阐述 LED 光源的发光原理及 LED 的伏安特
性，就低压、弱电流的驱动电路进行描述，解释恒压驱动和恒流驱动的区别，分析常见的几种 LED 光源的驱动
电路，介绍几种驱动电路在不同种类光源上的选择及应用．

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	孙菁阳

关键词: 光通量光强驱动恒流恒压

Abstract: LED as the twenty-first century green lighting source has been widely concerned， its luminous
principle is different from the traditional light source，DC LED using DC drive light，the traditional light source
is AC drive light，if the LED driver circuit fails，then the LED light source cannot be normal light，therefore，the
driving circuit of the DC LED light source is of vital importance to the overall life of the lamp．This paper first
describes the principle of LED light source and LED volt －ampere characteristics， on the low voltage， weak
current drive circuit described， explain the difference between constant voltage drive and constant current
drive，analysis of several common LED light source drive circuit， introduce the selection and application of
several driving circuits on different kinds of light sources．In conclusion，suitable and reasonable drive circuit，
the cost of LED light source，life is a very important part．

Key words: luminous flux light intensity drive constant current constant pressure

出版日期: 2018-03-25 发布日期: 2018-03-25 整期出版日期: 2018-03-25

TN 389

引用本文:

孙菁阳. 直流 LED 光源驱动电路的选择与应用[J]. 吉林化工学院学报, 2018, 35(3): 73-77.
SUN Jing-yang. Selection and Application of DC LED Driver. Journal of Jilin Institute of Chemical Technology, 2018, 35(3): 73-77.

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https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2018.03.017 或 https://xuebao.jlict.edu.cn/CN/Y2018/V35/I3/73

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