1 files changed, 36 insertions, 0 deletions
diff --git a/1223/CH7/EX7.15/Ex7_15.sce b/1223/CH7/EX7.15/Ex7_15.sce
new file mode 100755
index 000000000..5bb712db1
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+++ b/1223/CH7/EX7.15/Ex7_15.sce
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+clear;
+clc;
+//Example 7.15
+V1=5;
+V=-5;
+Rs=0.1;
+R1=40;
+R2=5.72;
+Re=0.5;
+Rc=5;
+Rl=10;
+b=150;
+Vbe=0.7;
+C1=35;
+C2=4;
+Vt=0.026;
+Icq=1.02;
+gm=39.2;
+r=3.82;
+x=Re*Rs/(Re+Rs);
+t=r/(1+b);
+y=t*x/(t+x);
+Tp=y*C1;
+printf('\ntime constant=%.3f ns\n',Tp)
+Tp=0.679*10^-3;//micro sec
+f=1/(2*%pi*Tp);
+printf('\nupper frequency =%.3fMHz\n',f)
+T=C2*Rc*Rl/(Rc+Rl);
+printf('\ntime constant=%.3f ns\n',T)
+T=13.3*10^-3;//micro sec
+f=1/(2*%pi*T);
+printf('\nupper frequency=%.2f MHz\n',f)
+x=Rc*Rl/(Rc+Rl);
+y=Re*t/(Re+t);
+Av=gm*x*(y/(y+Rs));
+printf('\nmidband voltage gain=%.2f \n',Av)