1 files changed, 39 insertions, 0 deletions
diff --git a/1223/CH7/EX7.7/Ex7_7.sce b/1223/CH7/EX7.7/Ex7_7.sce
new file mode 100755
index 000000000..4f3a38f1a
--- /dev/null
+++ b/1223/CH7/EX7.7/Ex7_7.sce
@@ -0,0 +1,39 @@
+clear;
+clc;
+//Example 7.7
+Vbe=0.7;
+b=100;
+Re=.5;
+Rc=5;
+Rl=10;
+R1=40;
+Cc=10;
+R2=5.7;
+Rs=.1;
+Vt=0.026;
+Icq=0.99;
+gm=Icq/Vt;
+printf('\ntransconductance=%.3f mA/V\n',gm)
+r=b*Vt/Icq;
+printf('\ndiffusion resistance=%.2f KOhm\n',r)
+Ri=r+(1+b)*Re;
+printf('\ninput resistance=%.2f KOhm\n',Ri)
+x=Rc*Rl/(Rc+Rl);
+y=R1*R2/(R1+R2);
+t=y*Ri/(y+Ri);
+Av=gm*r*x*(y/(y+Ri))*(1/(Rs+t));
+printf('\nmaximum small signal voltage gain=%.2f\n',Av)
+Ts=(Rs+t)*Cc;
+printf('\ntime constant=%.3f ms\n',Ts)
+Ts=46.6*0.001;//sec
+Cl=15;
+Tp=x*Cl;
+printf('\ntime constant=%.3f ns\n',Tp)
+fL=1/(2*%pi*Ts);
+printf('\nlower corner frequency=%.2f Hz\n',fL)
+Tp=50*10^-3;//micro sec
+fH=1/(2*%pi*Tp);
+printf('\nupper corner frequency=%.2f MHz\n',fH)
+fL=3.4*10^-6;//MHz
+fbw=fH-fL;
+printf('\nbandwidth =%.2fMHz\n',fbw)