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//chapter 19
//example 19.12
//page 844
printf("\n")
printf("given")
hFE7=20;Icbo=50*10^-6;hFE5=70;Vr9=3;Ip=869*10^-3;R15=1.5;R8=15*10^3;Vbe=.7;Vr11=3;Vee=20;
R12=.01/Icbo
R12=220;//use standard value
R13=R12;
Ib5=Ip/(hFE7*hFE5)
Ic3=2*10^-3;
R9=Vr9/Ic3
R11=R9;
Iq78=.1*Ip
Vr14=Iq78*R15
Vr15=Vr14;
Vr10=(Vr14+Vr15)+(Vr14+Vr15)/2
R10=Vr10/Ic3
Ir8=(Vr11+Vbe)/R8
R7=(Vee-(Vr11+Vbe))/Ir8
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