From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 68/CH8/EX8.3/ex3.sce | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100755 68/CH8/EX8.3/ex3.sce

(limited to '68/CH8/EX8.3')

diff --git a/68/CH8/EX8.3/ex3.sce b/68/CH8/EX8.3/ex3.sce
new file mode 100755
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--- /dev/null
+++ b/68/CH8/EX8.3/ex3.sce
@@ -0,0 +1,21 @@
+// Example 8.3 : Small signal analysis
+B=100; // beta value
+I_B=0.015*10^-3; // (A)
+I_C=1.5*10^-3; // (A)
+V_C=4.7; // (V)
+g_m=40*10^-3;
+R_f=47000;
+R_S=10000;
+R_C=4700;
+r_pi=B/g_m;
+A=-358.7*10^3; // V_o/I_i= -g_m(R_f||R_C)(R_S||R_F||r_pi)
+R_i=1400; // R_i=R_S||R_f||r_pi (ohm)
+R_o=R_C*R_f/(R_C+R_f); 
+B=-1/R_f;
+A_f=A/(1+A*B); // V_o/I_s
+A_v=A_f/R_S; // V_o/V_s
+disp(A_v,"The gain (V/V)")
+R_if=R_i/(1+A*B);
+disp(R_if,"R_if (ohm)")
+R_of=R_o/(1+A*B);
+disp(R_of,"R_of (ohm)")
\ No newline at end of file
-- 
cgit