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如何构建一个“软接触”开关

作者：时间：2011-08-02 来源：网络

　　印刷电路板

　　照片

电路是在OFF状态下

　　按下按钮，电路进入ON状态。高功率继电器开关LED

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关键词：开关接触一个构建如何

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