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

---
 506/CH10/EX10.4/Example10_4.sce | 50 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100755 506/CH10/EX10.4/Example10_4.sce

(limited to '506/CH10/EX10.4/Example10_4.sce')

diff --git a/506/CH10/EX10.4/Example10_4.sce b/506/CH10/EX10.4/Example10_4.sce
new file mode 100755
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--- /dev/null
+++ b/506/CH10/EX10.4/Example10_4.sce
@@ -0,0 +1,50 @@
+clear;
+clc;
+
+//Caption:Voltage Gain of MOSFET as a single stage and then as first transistor
+
+//Given Data
+Rd=100;//in K
+f=20000;//frequency in Hertz
+//MOSFET parameters
+gm=1.6;//in mA/V
+rd=44;//in k
+Cgs=3*(10^-12);//in F
+Cds=1*(10^-12);//in F
+Cgd=2.8*(10^-12);//in F
+m=gm*rd;//mew
+
+//Required Formulae
+Ygs=2*%pi*f*Cgs*%i;//in mho
+Yds=2*%pi*f*Cds*%i;//in mho
+Ygd=2*%pi*f*Cgd*%i;//in mho
+gd=1/rd;//in mho
+Yd=1/Rd;//in mho
+gm=1.6*(10^-3);//in mho
+disp('Gain of one stage amplifier');
+Av=(-gm+Ygd)/(gd+Yd+Yds+Ygd);//Voltage Gain
+disp(Av,'Av=');
+
+disp('Gain after nelecting the interelectrode capacitance');
+Av=-(m*Rd)/(Rd+rd);//Voltage Gain
+disp(Av,'Av=');
+
+//Let k= gm*Rd'
+k=-Av;
+Ci = (Cgs*(10^12)) +((1+k)*Cgd*(10^12));
+disp('Value of Input Impedence Capacitance');
+disp('pF',Ci,'Ci=');
+
+//Now considering a two stage amplifier consisting of an FET operating
+//New input Impedence taking into account various factors for present codition
+Ci=200*(10^-12);
+disp('Now considering a two stage amplifier consisting of an FET operating');
+Yl=(0.001/Rd)+(2*%pi*f*Ci*%i);
+disp(Yl,'Load Admittance =');
+
+gd=gd*0.001;
+disp('Gain');
+Av=-(gm)/(gd+Yl);//Voltage Gain
+disp(Av,'Av=');
+
+//end
\ No newline at end of file
-- 
cgit