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| author | priyanka | 2015-06-24 15:03:17 +0530 |
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| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /199/CH3/EX3.3/Example_3_3.sce | |
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diff --git a/199/CH3/EX3.3/Example_3_3.sce b/199/CH3/EX3.3/Example_3_3.sce new file mode 100755 index 000000000..0d25b25ea --- /dev/null +++ b/199/CH3/EX3.3/Example_3_3.sce @@ -0,0 +1,25 @@ +// Chapter3
+// Page.No-86, Figure.No-3.8
+// Example_3_3
+// Parameters of voltage-shunt feedback amplifier
+// Given
+clear;clc;
+R1=470;Rf=4.7*10^3;
+A=200000; // Open-loop voltage gain
+Ri=2*10^6;// Input resistance without feedback
+Ro=75; // Output resistance without feedback
+fo=5; // Break frequency of an Op-amp
+Vsat=13; // Saturation voltage
+K=Rf/(R1+Rf); // Voltage attenuation factor
+B=R1/(R1+Rf); // Gain of the feedback circuit
+Af=-(A*K)/(1+A*B); // Closed-loop voltage gain
+printf("\n Closed-loop voltage gain is Af = %.f \n",Af) // Result
+X=Rf/(1+A);
+RiF=R1+(X*Ri)/(X+Ri); // Input resistance with feedback
+printf("\n Input resistance with feedback is RiF = %.1f ohms \n",RiF) // Result
+RoF=Ro/(1+A*B); // Output resistance with feedback
+printf("\n Output resistance with feedback is RoF = %f ohms \n",RoF) // Result
+fF=fo*(1+A*B)/K; // Bandwidth with feedback
+printf("\n Bandwidth with feedback is vo = %.2f Hz \n",fF) // Result
+VooT=Vsat/(1+A*B); // Total output offset voltage with feedback
+printf("\n Total output offset voltage with feedback is VooT = %f V \n",VooT) // Result
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