电路为滞环电路,滞环电压范围400mV ,对于缓慢变化且含有噪声的输入信号,LM239DR输出信号在翻转时由震荡。
比较器同向端为基准分压,反相端为输入信号。查看输入信号及基准电压,在翻转时候,当同相端输入信号噪声达到基准电压附件时,比较器输出开始翻转,但是此时同相端信号尚未被拉低,滞环还没起作用。这是否是由器件本身特性造成的?如何改善此问题
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