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-rwxr-xr-x199/CH6/EX6.2.a/Example_6_2_a.sce20
-rwxr-xr-x199/CH6/EX6.2.a/result_ex_6_2_a.txt3
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+// Chapter6
+// Page.No-193, Figure.No-6.4(c)
+// Example_6_2_a
+// Bandwidth of the amplifier
+// Given
+clear;clc;
+R1=100*10^3;R2=100*10^3;R3=100*10^3;Rf=1*10^6;Rin=50;
+Ci=0.1*10^-6; // Capacitance b/w 2 stages being coupled
+Ro=Rin; // ac output resistance of the 1st stage
+Vcc=15;
+UGB=10^6; // Unity gain bandwidth
+Rif=R2*R3/(R2+R3); // since Ri*(1+A*B)>>R2 or R3
+fl=1/(2*%pi*Ci*(Rif+Ro)); // low-freq cutoff
+printf("\n Low-freq cutoff is = %.1f Hz \n",fl) // Result
+K=Rf/(R1+Rf);
+Af=-Rf/R1; // closed loop voltage gain
+fh=UGB*K/abs(Af); // High-freq cutoff
+printf("\n High-freq cutoff is = %.1f Hz \n",fh) // Result
+BW=fh-fl; // Bandwidth
+printf("\n Bandwidth is = %.1f Hz \n",BW) // Result \ No newline at end of file
diff --git a/199/CH6/EX6.2.a/result_ex_6_2_a.txt b/199/CH6/EX6.2.a/result_ex_6_2_a.txt
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+* Low-freq cutoff is = 31.8 Hz
+* High-freq cutoff is = 90909.1 Hz
+* Bandwidth is = 90877.3 Hz