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1静态工作点 T1基极电压，Ubq = Vcc*Rb12Rb11+Rb12发射极电压，Ueq = Ubq Ube，那么 Ie = UeqRe1集电极电压，Ucq = Vcc Ic*Rc1 = Vcc Ie*Rc1T2同理T3 Vcc = Ib*Rb3 + Ube + Ie*Re3 = Ib*Rb3 + Ube + Ib*1+β*Re3 从而得到 Ib，那么 Ubq = Vcc Ib*Rb3Ueq = Ib*1+β*Re3先写到这里吧。