1 files changed, 24 insertions, 0 deletions
diff --git a/2561/CH7/EX7.9/Ex7_9.sce b/2561/CH7/EX7.9/Ex7_9.sce
new file mode 100755
index 000000000..9ec4c8eca
--- /dev/null
+++ b/2561/CH7/EX7.9/Ex7_9.sce
@@ -0,0 +1,24 @@
+//Ex7_9
+clc
+AV=100000
+disp("AV="+string(AV)) // Voltage gain 
+Ri=10*10^(3)
+disp("Ri= "+string(Ri)+ " ohm")  //Input resistance of OP-AMP
+Ro=10
+disp("Ro= "+string(Ro)+ " ohm")  //Output resistance
+Rs=10*10^(6)
+disp("Rs= "+string(Rs)+ " ohm")  //Source resistance
+RL=1*10^(3)
+disp("RL= "+string(RL)+ " ohm")  //Load resistance
+B=(Rs-Ri)/(AV*Ri)
+disp("B=(Rs-Ri)/(AV*Ri)= "+string(B)) //Feedback factor
+AVf=AV/(1+B*AV)
+disp("AVf=AV/(1+B*AV)="+string(AVf)) // Overall Voltage gain with feedback
+Rof=Ro/(1+B*AV)
+disp("Rof=Ro/(1+B*AV) ="+string(Rof)+ " ohm")  //output resistance with feedback
+Rif=Ri*(1+B*AV)
+disp("Rif=Ri/(1+B*AV) ="+string(Rif)+ " ohm")  //Input resistance with feedback
+Ap=(AVf^2)*(Rif/RL)
+disp("Ap=(AVf^2)*(Rif/RL)="+string(Ap)) // Overall Power gain 
+AP=10*log10(Ap)
+disp("AP=10*log10(Ap)="+string(AP)+"dB") // Overall Power gain in dB