Characteristic Values and Their Dependence Upon the Working Point
If we study the characteristics in the first to third quadrants in the four-quadrant set of characteristics we can discover the dependence of the transistor characteristic values upon the working point concerned. The different slope of the characteristics in various working points gives information concerning the change of the working points involved. An investigation of this kind naturally does not give the influence of the voltage feedback on these characteristic values, but this has practically no effect on the qualitative statements.
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