在电子维修和电子制作中,有时需要将两只或三只晶体管复合成为一只高β值的等效晶体管使用。本文简要谈一谈晶体三极管复合运用时两个应注意的问题,参看图1、2、3。复合三极管VT由两只三极管VT1和VT2复合而成,现假定VT1、VT2均为硅半导体三极管,假定VT1、VT2的b、e结导通电压为0.7V,假定c、e饱和导通时的饱和压降V_(ces)均为0.5V(实际上,V_(ces)在0.3 In electronic repair and electronics, it is sometimes necessary to compound two or three transistors into one equivalent high-value transistor. This article briefly talk about the transistor triode compound should pay attention to two issues, see Figure 1,2,3. Composite transistor VT consists of two transistors VT1 and VT2 composite is now assumed VT1, VT2 are silicon semiconductor transistor, assuming VT1, VT2 b, e junction conduction voltage is 0.7V, assuming c, e saturated conduction The saturation voltage drop V_ (ces) is 0.5V (in fact, V_ (ces) is 0.3