// chapter 1
// example 1.9
//page 34, figure 1.38
Xdc=100;Xac=100;// gain
Vbe=0.7;Vee=12;Vcc=12;//given voltage in volts
Re=4700;Rin=50;Rc=2700;// given resistance in ohm
Hfe=100;Hie=1100;// given
Icq=(Vee-Vbe)/(2*Re+(Rin/Xdc));
Vceq=Vcc+Vbe-Rc*Icq;
disp(Icq,Vceq)//operating point(volt,ampere)
Aid=(Hfe*Rc)/(Rin+Hie);// voltage gain
disp(Aid)// result
Ri=2*(Rin+Hie)// input resistance
disp(Ri)//in ohm
Ro=Rc;// output resistance
disp(Ro)//output resistance in ohm