diff options
| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /506/CH10/EX10.4/Example10_4.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '506/CH10/EX10.4/Example10_4.sce')
| -rwxr-xr-x | 506/CH10/EX10.4/Example10_4.sce | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/506/CH10/EX10.4/Example10_4.sce b/506/CH10/EX10.4/Example10_4.sce new file mode 100755 index 000000000..11698cf04 --- /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 |