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-rw-r--r--1430/CH11/EX11.7/exa11_7.sce20
-rw-r--r--1430/CH11/EX11.7/exa11_7.txt14
2 files changed, 34 insertions, 0 deletions
diff --git a/1430/CH11/EX11.7/exa11_7.sce b/1430/CH11/EX11.7/exa11_7.sce
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+// Example 11.7
+// Design of an Active Filter
+f_l=200;
+f_u=4000;
+// f_l=1/(2*%pi*R1*C1) and f_u=1/(2*%pi*R_F*C_F)
+// which limits the value of capacitance to
+// 5nF<C_1<500nF and 0.25nF<C_F<25nF
+// R_F= 1/(omega_u*C_F) and R_1=1/(omega_l*C_1)
+// K=C_1/(20*C_F)
+// thus i can increase the midband gain by taking large value for C_1 and small value for C_F
+// thus we choose standard values for capacitors
+C_1= 100*10^-9;
+C_F=1*10^-9;
+R_1=1/(2*%pi*f_l*C_1);
+R_F=1/(2*%pi*f_u*C_F);
+//Which gives
+K=R_F/R_1;
+disp("Required value for resistors are(in Ohms)")
+disp(R_1,"R_1=")
+disp(R_F,"R_F=")
diff --git a/1430/CH11/EX11.7/exa11_7.txt b/1430/CH11/EX11.7/exa11_7.txt
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@@ -0,0 +1,14 @@
+
+
+-->exec('C:\Users\sangeet\Documents\Scilab\Circuits\Chapter 11\exa11_7.sce', -1)
+
+ Required value for resistors are(in Ohms)
+
+ R_1=
+
+ 7957.7472
+
+ R_F=
+
+ 39788.736
+