Question

单管共发射极放大电路如图所示,已知其静态电流ICQ=1.5mA,静态电压UCEQ=6V,三极管为NPN型硅管，β=60？

求电阻RC、Rb的值

Answer 1

Rc=(Ucc-Uce)/Icq=6/1.5=4K
Ibq=Icq/β=1.5/60=0.025mA
Rb=(Ucc-0.7)//Ibq=11.3/0.025=452K