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运放OP07CP的问题

Other Parts Discussed in Thread: OP07

我们公司在生产中出现有多块直流屏产品采集板的质量问题,表现为在负载为0A时,显示器A路显示0A,B路显示2A,通过调节电位器,无法使B路电流调为0A。

经过多次维修确认,只有在更换运放OP07(单板用量2只)后,负载显示会有变化;要使A、B路电流显示一致,有时需几次更换运放OP07。

不知如何解决这个问题,以便两路均可以调零