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直流电源电压监控电路该怎么设计？

直流电源电压监控电路该怎么设计？

浏览：26次 | 提问时间： 08-03 08:45

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3个答案

逞强 08-03 08:45

在主电路上对地接个0.1欧姆的小电阻，然后用单片机的adc检测这个小电阻两端的电压不就可以了，注意这个小电阻需要视你的电路而定，看你的主电路上的电流大小，再决定电阻的大小，大了会影响电路的效率。

我怕失去 08-03 08:54

做法：最简单的是变压器+LM317+DA+AD，就是效率低，网上有这种Proteus的* 复杂点的可以把LM317换成集成的DCDC芯片，比如常见的LM2596adj，输出更稳定的可以用ST的L5972或者TI的STP5430等等都可以做到，当然用分离元件也是可以的。

柠檬与少年我去炸学校 08-03 09:02

你好，一种直流电源监控电路，包括直流电源供给端(9)以及连接在其上经过或未经过电压调节的电源输入端(8)和输出端(7)，还包括电压监测电路(1)、控制电路(2)和开关电路(3)；所述开关电路(3)串联在电源输入端(8)和电源输出端(7)之间，所述开关电路(3)的控制端与所述控制电路(2)的输出端相连；所述控制电路(2)的输入端与所述电压监测电路(1)的输出端相连，所述电压监测电路(1)的输入端连接在直流电源供给端(9)上。实施本实用新型的直流电源监控电路，具有以下有益效果：可以使直流电源电压出现短时低凹时直流电源所关联的所有后级电路能够正常工作。希望我的回答对你有所帮助！

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直流电源电压监控电路该怎么设计？

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直流电源电压监控电路该怎么设计？