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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /181/CH7/EX7.59 | |
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initial commit / add all books
Diffstat (limited to '181/CH7/EX7.59')
| -rwxr-xr-x | 181/CH7/EX7.59/example7_59.sce | 34 | ||||
| -rwxr-xr-x | 181/CH7/EX7.59/example7_59.txt | 5 |
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diff --git a/181/CH7/EX7.59/example7_59.sce b/181/CH7/EX7.59/example7_59.sce new file mode 100755 index 000000000..564599556 --- /dev/null +++ b/181/CH7/EX7.59/example7_59.sce @@ -0,0 +1,34 @@ +// Design a source follower
+// Basic Electronics
+// By Debashis De
+// First Edition, 2010
+// Dorling Kindersley Pvt. Ltd. India
+// Example 7-59 in page 361
+
+clear; clc; close;
+
+// Given data
+Vds=14; // Drain-source voltage in V
+Idq=3*10^-3; // Drain-source current in mA
+Vdd=20; // Drain voltage in V
+gm=2*10^-3; // Transconductance in mS
+rd=50*10^3; // Dynamic resistance in K-ohms
+Vgs=-1.5; // Gate-source voltage in V
+
+// Calculation
+R=(20-14)/Idq;
+R1=Vgs/-Idq;
+R2=R-R1;
+Ro=1/gm;
+Av=R/(R+Ro);
+R_1=1/(1-(Av*(R2/R)));
+printf("R1 = %0.1e ohms\nR2 = %0.1e ohms\nRo = %0.1e ohms\n",R1,R2,Ro);
+printf("Av = %0.1f*Av1\n",Av);
+printf("Effective input resistance R1 = %0.1f*R3",R_1);
+
+// Result
+// R1 = 0.5 K
+// R2 = 1.5 K
+// Ro = 0.5 K
+// Av = 0.8*Av'
+// R1(effective) = 2.5*R3
\ No newline at end of file diff --git a/181/CH7/EX7.59/example7_59.txt b/181/CH7/EX7.59/example7_59.txt new file mode 100755 index 000000000..bcea73b1a --- /dev/null +++ b/181/CH7/EX7.59/example7_59.txt @@ -0,0 +1,5 @@ + R1 = 5.0e+002 ohms
+R2 = 1.5e+003 ohms
+Ro = 5.0e+002 ohms
+Av = 0.8*Av1
+Effective input resistance R1 = 2.5*R3
\ No newline at end of file |