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本文就差动放大器的电路不对称因素对共模抑制此的影响作了详尽的分析,并用微型计算机给出数据曲线,能对差动放大器两边增益平衡的一系列问题有一醒目的定量了解。作者的愿望是为从事基础理论教学的教师及技术人员提供一些参考资料。
In this paper, the influence of the asymmetry of the differential amplifier on the common mode rejection is analyzed in detail, and the data curve is given by the microcomputer. This method can have a striking and quantitative understanding of a series of problems of gain balance on both sides of the differential amplifier. The author’s wish is to provide reference materials for teachers and technicians engaged in basic theoretical teaching.