1 files changed, 38 insertions, 0 deletions
diff --git a/293/CH9/EX9.3/eg9_3.sce b/293/CH9/EX9.3/eg9_3.sce
new file mode 100755
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+++ b/293/CH9/EX9.3/eg9_3.sce
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+//a
+//transistor parameters 
+ R2 = 0.625;
+ hie = 1.67;
+ Rb = 4.16;
+ Rl = 2.4;
+ Roe = 150;
+ 
+ Cc = 25 * 10^-6;
+ rBB = 0.29;
+ rBE = 1.375;
+ Cd = 6900 * 10^-12;
+ Ct = 40 * 10^-12;
+ gm = 0.032;
+ 
+  Req = (Rl*Roe)/(Rl + Roe);
+  hfe = 44;
+  a = 1 + (R2/Req);
+  b = 1 + (hie/Rb);
+  Aim = -hfe/(a*b); // mid band frequency gain 
+  disp("a")
+  disp(Aim,"The mid band frequency gain of the first stage of the circuit is: ")
+  
+  //b
+  Tl = 2*%pi*(Req + R2)*Cc*(10^3);
+  Fl = 1/Tl; 
+  
+  Rp = (Req*R2)/(Req + R2);
+  C = Cd + Ct*(1 + gm*Rp*10^3);
+  d = Rb + hie ;
+  e = rBE * (Rb + rBB)* 10^3 * C ; 
+  Fh = d/(2*%pi*e);
+  
+  BW = Fh - Fl;
+ disp("b")
+ disp(BW, "The bandwidth of the first stage amplifier in Hz is :")
+  
+  
+\ No newline at end of file