Ib=(10v-0.7v)/Rb =9.3/200K =0.0465mA
Ic=βIb =50*0.0465 =2.325mA
Uce=10v-Ic*Rc =10v-6.975v =3.025v
Uce>Ube=0.7v
所以工作在放大状态.