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

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 506/CH15/EX15.2/Example15_2.sce | 28 ++++++++++++++++++++++++++++
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 create mode 100755 506/CH15/EX15.2/Example15_2.sce

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diff --git a/506/CH15/EX15.2/Example15_2.sce b/506/CH15/EX15.2/Example15_2.sce
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+clear;
+clc;
+
+//Caption:Design an amplifier using yA702A
+//Given Data
+f=32;//feedback in dB
+//from the Bodes plot we get that Avo = 2510
+Avo = 2510;//gain
+disp('The parameters are R , r (for Rdash), C (for Cdash)');
+//Desensivity D = B*Rmo = Avo*(R/(R+r))
+//20log10(D ) = f
+k = f - (20*log10(Avo));
+//Let (R+r)/R = l
+l = 1/(10^(k/20));
+//R/(R+r) = fp/fz
+//For 45degree phase margin and 32dB of low frequency feedback we find by trial and error method from the graph
+fz = 10;//in MHz
+fp = fz*l;
+//to determine c we can arbitrarily choose R
+R = 1000;//in ohm
+disp('ohm',R,'R = ');
+r = (l-1)*R
+disp('ohm',r,'r = ');
+C = 1/(2*%pi*fz*r*10^-6);
+disp('pF',C,'C = ');
+
+
+//end
\ No newline at end of file
-- 
cgit