该电路在一个电位器控制下,产生一个幂函数输出电压,具有好的温度系数(±200ppm/℃)。通常的幂函数电路用一对晶体管来抵消V_(BE)失调漂移,又用一个热敏电阻来补偿增益随温度的漂移。只要二个集电极电流有差异,总是存在增益随温度变化的。(当发射极电流之 The circuit generates a power function output voltage under a potentiometer control and has a good temperature coefficient (± 200ppm / ° C). The usual power function circuit uses a pair of transistors to counteract the V BE offset drift and a thermistor to compensate the gain drift with temperature. As long as there is a difference between the two collector currents, there is always a gain that varies with temperature. (When the emitter current