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+// Chapter3
+// Page.No-86, Figure.No-3.8
+// Example_3_4
+// Output voltage of voltage-shunt feedback amplifier
+// Given
+clear;clc;
+R1=470;Rf=4.7*10^3;
+A=200000; // Open-loop voltage gain
+vin=1; // Input voltage in volts
+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
+vo=Af*vin; // Output voltage
+printf("\n Output voltage is vo = %.f V  \n",vo) // Result
+t=0:0.1:2*%pi;
+vo=-10*sin(t);
+plot(t,vo);
+title('Output Voltage');
+xlabel('t');
+ylabel('Vo');
diff --git a/199/CH3/EX3.4/result_ex_3_4.txt b/199/CH3/EX3.4/result_ex_3_4.txt
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+* Output voltage is vo = -10 V
+\ No newline at end of file