LM3914的4引脚和6引脚之间精密电阻电阻阻值,资料介绍应该是10K,实际测量11.4K左右,阻值相差太多这是为什么呢
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Hi
有没有单独拆下来测试?(一般精度1%, 现在是个别现象,还是都这样?)
板子上测试容易受到其他阻值的干扰,但是通常只会测试偏低。