1 files changed, 14 insertions, 0 deletions
diff --git a/226/CH13/EX13.4/example4_sce.sce b/226/CH13/EX13.4/example4_sce.sce
new file mode 100755
index 000000000..b9ebcc44a
--- /dev/null
+++ b/226/CH13/EX13.4/example4_sce.sce
@@ -0,0 +1,14 @@
+//chapter 13
+//example 13.4
+//page 554
+printf("\n")
+printf("given")
+Zb=1*10^3;hoe=1/(85*10^3);Av=58000;Rf2=220;Rf1=16.2*10^3;R1=120*10^3;R2=39*10^3;R7=12*10^3;
+B=Rf2/(Rf2+Rf1)
+disp("voltage gain")
+Acl=Av/(1+Av*B)
+Zi=Zb*(1+Av*B)
+Zin=(Zi*R1*R2)/(Zi*R1+R2*R1+R2*Zi)
+Zo=(1/hoe)/(1+Av*B)
+Zout=(R7*Zo)/(R7+Zo)
+printf("output impedance is %dohm\n",Zout)
+\ No newline at end of file