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51问答网 > 2A换成3A开关电源led灯带为什么会烧掉？

2A换成3A开关电源led灯带为什么会烧掉？

2025-04-06 21:57:36

推荐回答（1个）

回答1：

led灯带一般用恒流电源，用恒压电源的话电压波动对灯带影响大。不过之前用12V电源没烧，之后用同是12V电源却烧，要么是灯带本来寿命就将到，要么是之前用的电源电流低于灯带要求的电流，接上灯带电压就降低，还有可能是之后用的电源输出波纹大，相当于有瞬间比较高的电压。

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