在分析晶体管偏置电路稳定性时,国内外传统的分析方法一般是采用稳定系数S=??.它是以I_c为着眼点,又只考虑I_(oo)的影响.是否全面、是否妥当,值得研究.在晶体管输出特性曲线上,直流工作点是由集电极电压U_(oe)和集电极电流I_c决定的.固然I_c变化时工作点会变化,然而集电极对地直流电压U_c变 In the analysis of transistor bias circuit stability, the traditional analytical methods at home and abroad is generally the use of stability coefficient S = ?? It is the focus of I_c, but also consider the impact of Io (oo) is comprehensive, is it right, It is worth to study.In the transistor output characteristic curve, the DC operating point is determined by the collector voltage U_ (oe) and the collector current I_c.While the I_c changes when the operating point will change, but the collector DC voltage U_c change