我加上去的电压为1.7V,从示波器上看出:电压平均值为1.7V(即为我所加的电压)。但是干扰的最大值为3.36V,最小值为-0.36V. 黑色线条的时间为7.6us,即132KHZ,红色线条的时间为23.4us,42.8KHZA,从示波器上看,干扰全部是衰减振荡波形.我加了RC滤波,好像滤除不了。
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