F930GOT-BWD-C触摸屏三菱

F930GOT-BWD-C
F930GOT-BWD-C
F930GOT-BWD-C





触摸屏干扰的另一个潜在来源是电源供电手机充电器的开关电源。干扰通过手指耦合到触摸屏上，如图5所示。小型手机充电器通常有交流电源火线和零线输入，但没有地线连接。充电器是隔离的，所以在电源输入和充电器次级线圈之间没有直流连接。然而，这仍然会通过开关电源隔离变压器产生电容耦合。充电器干扰通过手指触摸屏幕而形成返回路径。

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