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你好监控补光灯直亮不熄什么原因

2025-03-14 23:10:45

推荐回答（1个）

回答1：

监控补光灯直亮不熄，应该是感光元件损坏导致的。
补光灯的启动与关闭，由一个光敏电阻来控制。当外界光线变暗时，光敏电阻的阻值发生变化，导致流经的电流大小发生变化。电流的变化会传递给主控芯片，然后由主控芯片发出指令，启动或关闭补光灯。
更换光敏电阻应该能够解决补光灯常亮的故障。

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