×

AC LED轻引擎的设计更薄的设计和更长的寿命

消耗积分:0 | 格式:rar | 大小:0.46 MB | 2017-05-11

分享资料个

AC LED轻引擎的设计更薄的设计和更长的寿命
 
  LED光引擎承诺更长的寿命比白炽灯或紧凑型荧光灯(CFL),理论辐射寿命长达50000小时的基础上。在实践中,通常被认为是必不可少的系统的其他部分,如低压恒流驱动电路和相关的无源器件,往往会降低实际工作寿命。直流LED灯的典型工作寿命约为15000小时。
 
  交流LED,可以从高压线没有驱动程序可以消除通常需要创建一个传统的低压直流驱动器的几个组成部分。消除这些组件,以及它们之间的互连,使AC供电的光引擎提供卓越的可靠性和寿命接近理论LED发光体寿命。
 
  AC LED轻引擎的设计更薄的设计和更长的寿命
 
  AC-powered LED lighting can be built using back-to-back LED strings that are turned on for each alternate cycle of the applied AC waveform. This type of operation can cause the lamp to appear to flicker, particularly if the LEDs are not closely spaced. An alternative approach, using a bridge rectifier and a single IC operating at the line voltage to control the current delivered to the LED array can improve performance without significantly impairing reliability.
 
  The latest AC-powered LED modules from Seoul Semiconductor combine an array of high-voltage Multi-Junction Technology (MJT) LED emitters with the company’s second-generation Acrich2 control IC. This combination enhances reliability, simplifies circuitry, and reduces solution size. Reducing the size of the electronic assembly delivers significant advantages when designing a light engine to meet an established form factor, such as MR-type replacements for 40 W or 60 W incandescent bulbs.

声明:本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人,不代表电子发烧友网立场。文章及其配图仅供工程师学习之用,如有内容侵权或者其他违规问题,请联系本站处理。 举报投诉

评论(0)
发评论

下载排行榜

全部0条评论

快来发表一下你的评论吧 !