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在没有输入信号的情况下，用示波器观察输出端，频率有100MHZ，幅度有几百毫伏。。。。请问一下该怎样解决？着急啊。。
没有输入是输入接地还是悬空呢？
接地和悬空的效果都一样。。。。都会有近100MHZ的频率
