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

---
 1133/CH3/EX3.9/Example3_9.sce | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100755 1133/CH3/EX3.9/Example3_9.sce

(limited to '1133/CH3/EX3.9')

diff --git a/1133/CH3/EX3.9/Example3_9.sce b/1133/CH3/EX3.9/Example3_9.sce
new file mode 100755
index 000000000..62b5b481b
--- /dev/null
+++ b/1133/CH3/EX3.9/Example3_9.sce
@@ -0,0 +1,16 @@
+//Example 3.9
+clc
+disp("Here, output terminals are B and ground, thus the forward gain is the gain of Q1 and it is,")
+disp("  A_BN = -33.11")
+disp("However, Q2 and Q3 must be considered as a part of feedback loop")
+disp("Here  beta_BN = V_f / V_B = V_f/V_o * V_o/V_C * V_C/V_B")
+disp("where V_B and V_C are voltages at point B and C, respectively.")
+disp("Therefore,  beta_BN = V_f/V_o * A_v3 * A_v2         because V_o/V_C = A_v3 and V_C/V_B = A_v2")
+bbn=-(5*10^-5)*(33.11^2)
+format(7)
+disp(bbn,"Therefore,  beta_BN = -R1/R_g * A_v3 * A_v2 =")
+disp("Note that the loop gain - beta_BN * A_BN = A^3_Vo * R1/Rg = -1.815 = -A*beta")
+disp("It should be clear tht regardless ofwhere the output terminals are taken, the loop gain is unchanged.")
+avf=-33.11/2.815
+format(6)
+disp(avf,"Therefore,  A_vf = A_BN / 1+A*beta =")
\ No newline at end of file
-- 
cgit