diff options
| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /1691/CH1/EX1.23/Example1_23.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '1691/CH1/EX1.23/Example1_23.sce')
| -rwxr-xr-x | 1691/CH1/EX1.23/Example1_23.sce | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/1691/CH1/EX1.23/Example1_23.sce b/1691/CH1/EX1.23/Example1_23.sce new file mode 100755 index 000000000..3847929b7 --- /dev/null +++ b/1691/CH1/EX1.23/Example1_23.sce @@ -0,0 +1,55 @@ +//Example 1.23
+clc
+disp("Step 1: Identify topology")
+disp("Here output voltage is sampled and fed in shunt with the input siganl such that, I_s-I_f = I_i, hence topology is voltage shunt feedback")
+disp("")
+disp("Step 2 and Step 3: Find input and output circuit")
+disp("To find input circuit, set Vo = 0. This places resistor R across the input. To find output circuit, set V_i = 0. This places resistor R across output. The resultant circuit is shown in fig 1.69")
+disp("")
+disp("Step 4: Replace transistor with its h-parameter equivalent circuits as shown in fig 1.67")
+disp("")
+disp("Step 5 : Find open loop transresistance")
+disp("R_M = Vo/I_s = R_c*Io/I_s = -R_c*I_c/I_s")
+disp(" = R_c * -I_c/I_b * I_b/I_s")
+icb=(-100*82)/94
+format(6)
+disp(icb,"-I_c/I_b = -h_fe*R / R+R_c =")
+disp("I_b/I_s = Ro||R / R_s||(R+R_i1)")
+ri1=1.1+(101*820*10^-3)
+disp(ri1,"R_i1(in k-ohm) = h_ie + (1+h_fe)R_e =")
+ibs=(82/83)/(83.92+(82/83))
+format(7)
+disp(ibs,"Therefore, I_b/I_s =")
+rm=-87.23*12*0.0116
+format(7)
+disp(rm,"Therefore, R_M(in k-ohm) = Vo/I_s =")
+disp("")
+disp("Step 6: Calculate beta")
+b=-1/(82*10^3)
+format(10)
+disp("beta = I_f/Io = V_i-Vo/Vo*R =")
+disp(b," = -1/R = because (Vo > V_i)")
+disp("")
+disp("Step 7: Calculate D, R_Mf, A_vf, R_if, R''_of")
+d=1+(-1.22*-12.142*10^-2)
+format(6)
+disp(d,"D = 1 + beta*R_M =")
+rmf=-12.142/1.148
+format(6)
+disp(rmf,"R_Mf(in k-ohm) = R_M/D =")
+avf=-10.57
+disp("A_vf = V0/V_s = Vo/I_s*R_s =")
+disp(avf," = R_Mf/R_s = because R_Mf = Vo/I_s")
+ri=((1*82*83.92)/((82*83.92)+(1*83.92)+(82*1)))
+disp(ri,"R_i(in k-ohm) = R_s || R_i1 || R =")
+rif=(0.976*10^3)/1.148
+format(4)
+disp(rif,"R_if(in ohm) = R_i/D =")
+disp("Ro = infinity")
+disp("Therefore, R_of = infinity/D = infinity because h_oe = 0")
+ro=(12*82)/(94)
+format(7)
+disp(ro,"R''_o(in k-ohm) = R || R_c =")
+rof=(10.468)/1.148
+format(6)
+disp(rof,"R''_of(in k-ohm) = R''_o/D =")
|