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LM339输出高低电平问题。

Other Parts Discussed in Thread: LM339

用LM339做一个迟滞比较器,将一个正弦波信号转换成方波信号。必须接一个正电源和一个负电源,输出接口还得有上拉电阻,问题是输出的高低电平如何计算?和上拉电阻的大小有关吗?

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