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我遇到了一个棘手的问题：在我的Arduino项目中，我无法让OLED显示屏正常工作。无论我怎么调试和修改代码，显示屏始终保持黑屏状态。我需要你们的建议和帮助来解决这个问题。OLED显示屏在我的Ardu...

前段时间在淘宝上买了个标称24V500W的电源，400多元，现在有点担心功率不够，不知道是不是被骗了，遂求检测方法

初级0.8mm漆包线20T，反馈10T，管子是BU806，通电12v后电流从200ma飙升至2A就太热停止工作了。次级是空载的。请问哪位知道该怎样减小空载电流又能提高效率？

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