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怎样换led灯珠
更新时间: 2021-04-12 15:55:54  

1、LED属于不可替换产品(LED灯具是都有这个标识)如果是吸顶灯,可以更换灯贴,如果你要更换灯盘里的单个的LED光源,非专业人士,是无法更换。

2、发光原理:PN结的端电压构成一定势垒,当加正向偏置电压时势垒下降,P区和N区的多数载流子向对方扩散。由于电子迁移率比空穴迁移率大得多,所以会出现大量电子向P区扩散,构成对P区少数载流子的注入。这些电子与价带上的空穴复合,复合时得到的能量以光能的形式释放出去。这就是PN结发光的原理。

关键词: 怎样 led

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