initial commit / add all books

13 files changed, 226 insertions, 0 deletions

diff --git a/1754/CH5/EX5.1/Exa5_1.sce b/1754/CH5/EX5.1/Exa5_1.sce
new file mode 100755
index 000000000..4fcb5c64c
--- /dev/null
+++ b/1754/CH5/EX5.1/Exa5_1.sce
@@ -0,0 +1,10 @@
+//Exa 5.1

+clc;

+clear;

+close;

+//Given data :

+A=50;//gain(unitless)

+Af=10;//gain(unitless)

+//Formula : Af=A/(1+A*Beta)

+Beta=(A/Af-1)/A;//feedback ratio (unitless)

+disp(Beta*100,"Percentage of output fed back(%) : ");
\ No newline at end of file
diff --git a/1754/CH5/EX5.10/Exa5_10.sce b/1754/CH5/EX5.10/Exa5_10.sce
new file mode 100755
index 000000000..df7a99f33
--- /dev/null
+++ b/1754/CH5/EX5.10/Exa5_10.sce
@@ -0,0 +1,12 @@
+//Exa 5.10

+clc;

+clear;

+close;

+//Given data :

+format('v',5);

+A=1000;//gain(unitless)

+Beta=1/20;//feedback ratio (unitless)

+//Formula : Af=A/(1+A*Beta)

+Af=A/(1+A*Beta);//gain with feedback(unitless)

+Af=20*log10(Af);//in dB

+disp(Af,"Gain with feedback in dB : ");
\ No newline at end of file
diff --git a/1754/CH5/EX5.11/Exa5_11.sce b/1754/CH5/EX5.11/Exa5_11.sce
new file mode 100755
index 000000000..872049c47
--- /dev/null
+++ b/1754/CH5/EX5.11/Exa5_11.sce
@@ -0,0 +1,18 @@
+//Exa 5.11

+clc;

+clear;

+close;

+//Given data :

+A=800;//gain(unitless)

+f1=40;//in Hz

+f2=16;//in kHz

+Beta=2/100;//feedback fator (unitless)

+//Formula : Af=A/(1+A*Beta)

+Af=A/(1+A*Beta);//gain with feedback(unitless)

+disp(Af,"Voltage gin with feedback : ");

+BW=f2*10^3-f1;//Bandwidth of amplifier in Hz

+disp(BW*10^-3,"Bandwidth of amplifier in kHz : ");

+f1_f=f1/(1+A*Beta);//in Hz

+f2_f=f2*(1+A*Beta);//in kHz

+BW_f=f2_f*10^3-f1_f;//Bandwith after feedback in Hz

+disp(round(BW_f*10^-3),"Bandwith after feedback in KHz : ");
\ No newline at end of file
diff --git a/1754/CH5/EX5.12/Exa5_12.sce b/1754/CH5/EX5.12/Exa5_12.sce
new file mode 100755
index 000000000..417dc1dff
--- /dev/null
+++ b/1754/CH5/EX5.12/Exa5_12.sce
@@ -0,0 +1,15 @@
+//Exa 5.12

+clc;

+clear;

+close;

+//Given data :

+A=100;//gain(unitless)

+BW=10;//in Hz

+Beta=5;//in %

+//Part (i) :

+//Formula : Af=A/(1+A*Beta)

+Af=A/(1+A*Beta/100);//gain with feedback(unitless)

+disp(Af,"Voltage gin with feedback : ");

+//Part (ii)

+BW_f=BW*(1+A*Beta/100);//Bandwith after feedback in Hz

+disp(BW_f,"Bandwith with negative feedback in KHz : ");
\ No newline at end of file
diff --git a/1754/CH5/EX5.13/Exa5_13.sce b/1754/CH5/EX5.13/Exa5_13.sce
new file mode 100755
index 000000000..b3d76ad2a
--- /dev/null
+++ b/1754/CH5/EX5.13/Exa5_13.sce
@@ -0,0 +1,20 @@
+//Exa 5.13

+clc;

+clear;

+close;

+//Given data :

+hfe=50;//unitless

+hie=1.1;//in kOhm

+hoe=0;//unitless

+hre=0;//unitless

+RL=4;//in kOhm

+Rs=10;//in kOhm

+RB=40;//in kOhm

+RLdash=RB*RL/(RB+RL);//in Kohm

+AV=-hfe*RLdash/hie;//unitless

+//Part (i) ;

+Rif=hie*(RB/(1-AV))/(hie+(RB/(1-AV)));//in kOhm

+disp(round(Rif*1000),"Input resistance with feedback in Ohm : ");

+//Part (ii) :

+AVf=AV*(Rif/(Rs+Rif));//unitless

+disp(AVf,"Voltage gin with feedback : ");
\ No newline at end of file
diff --git a/1754/CH5/EX5.2/Exa5_2.sce b/1754/CH5/EX5.2/Exa5_2.sce
new file mode 100755
index 000000000..a44c05a7f
--- /dev/null
+++ b/1754/CH5/EX5.2/Exa5_2.sce
@@ -0,0 +1,23 @@
+//Exa 5.2

+clc;

+clear;

+close;

+//Given data :

+A=1000;//gainWithoutFeedback(unitless)

+//Part (i) : 

+disp("At normal collector supply :");

+disp("with feedback gain reduces by a factor 0.40");

+Af=A-A*0.40;//gainWithFeedback(unitless)

+disp(Af,"At normal collector supply, Gain with feedback : ");

+//Formula : Af=A/(1+A*Beta)

+Beta=(A/Af-1)/A;//feedback factor (unitless)

+disp("At reduced power supply :");

+Adash=800;//gainWithoutFeedback(unitless)

+Af_dash=Adash/(1+Adash*Beta)

+disp(round(Af_dash),"At Reduced collector supply, Gain with feedback : ");

+//Part (ii)

+Reduction=((A-Adash)/A)*100;//% reduction without feedback

+disp(Reduction,"percentage reduction in gain without feedback(%) :");

+Reduction1=((Af-Af_dash)/Af)*100;//% reduction without feedback

+disp(round(Reduction1),"percentage reduction in gain with feedback(%) :");

+//Note : answer of Af is wrong in the book.

diff --git a/1754/CH5/EX5.3/Exa5_3.sce b/1754/CH5/EX5.3/Exa5_3.sce
new file mode 100755
index 000000000..eae30e7bf
--- /dev/null
+++ b/1754/CH5/EX5.3/Exa5_3.sce
@@ -0,0 +1,23 @@
+//Exa 5.3

+clc;

+clear;

+close;

+//Given data :

+A=100;//gain without feedback(unitless)

+Beta=1/25;//feedback ratio (unitless)

+Vi=50;//in mV

+//Part (i) :

+Af=A/(1+A*Beta);//gain with feedback(unitless)

+disp(Af,"(i) Gain with feedback :");

+//Part (ii) :

+FeedbackFactor=Beta*A;//unitless

+disp(FeedbackFactor,"(ii) Feedback Factor :");

+//Part (iii) :

+Vo_dash=Af*Vi*10^-3;//in volt

+disp(Vo_dash,"(iii) Output Voltage in volts :");

+//Part (iv) :

+FeedbackVoltage=Beta*Vo_dash;//in volt

+disp(FeedbackVoltage,"(iv) Feedback Voltage in volts :");

+//Part (v) :

+Vi_dash=Vi*(1+Beta*A);//in mv

+disp(Vi_dash,"(v) New Increased Input Voltage in milli volts :");
\ No newline at end of file
diff --git a/1754/CH5/EX5.4/Exa5_4.sce b/1754/CH5/EX5.4/Exa5_4.sce
new file mode 100755
index 000000000..1a1966b21
--- /dev/null
+++ b/1754/CH5/EX5.4/Exa5_4.sce
@@ -0,0 +1,14 @@
+//Exa 5.4

+clc;

+clear;

+close;

+//Given data :

+BW=200;//in kHz

+A=40;//gain without feedback(in dB)

+Beta=5;//negative feedback in %

+Beta=Beta/100;//feedback factor

+//Formula : Af=A/(1+A*Beta)

+Af=A/(1+A*Beta);//gain with feedback(in dB)

+disp("Since gain bandwidth product remains constant, A*BW=Af*BW_dash");

+BW_dash=A*BW/Af;//in kHz

+disp(BW_dash,"New Bandwidth in kHz : ");
\ No newline at end of file
diff --git a/1754/CH5/EX5.5/Exa5_5.sce b/1754/CH5/EX5.5/Exa5_5.sce
new file mode 100755
index 000000000..2fc55d962
--- /dev/null
+++ b/1754/CH5/EX5.5/Exa5_5.sce
@@ -0,0 +1,10 @@
+//Exa 5.5

+clc;

+clear;

+close;

+//Given data :

+A=140;//gain without feedback(unitless)

+Af=17.5;//gain with feedback(unitless)

+//Formula : Af=A/(1+A*Beta)

+Beta=(A/Af-1)/A;//feedback ratio (unitless)

+disp("Fraction of output fed back to input : "+string(Beta)+" or 1/20");
\ No newline at end of file
diff --git a/1754/CH5/EX5.6/Exa5_6.sce b/1754/CH5/EX5.6/Exa5_6.sce
new file mode 100755
index 000000000..b1d0a56c8
--- /dev/null
+++ b/1754/CH5/EX5.6/Exa5_6.sce
@@ -0,0 +1,17 @@
+//Exa 5.6

+clc;

+clear;

+close;

+//Given data :

+A=200;//gain without feedback(unitless)

+Beta=0.25;//fraction ratio(unitless)

+disp("We have, Af=A/(1+Beta*A)          eqn(1)");

+disp("Differentiating it with respect to A, we get");

+disp("dAf/dA=((1+Beta*A)-Beta*A)/(1+Beta*A)^2=1/(1+Beta*A)^2");

+disp("dAf=dA/(1+Beta*A)^2          eqn(2)");

+disp("Dividing eqn(2) by eqn(1),");

+disp("dAf/Af=(dA/((1+Beta*A)^2))*((1+Beta*A)/A)=(1/(1+Beta*A))*(dA/A)");

+//Given : Normal gain changes by 10 %, it means dA/A=10/100

+dABYA=10/100;//change in gain

+dAfBYAf=(1/(1+Beta*A))*(dABYA);//change in gain

+disp(dAfBYAf,"Change in gain : ");
\ No newline at end of file
diff --git a/1754/CH5/EX5.7/Exa5_7.sce b/1754/CH5/EX5.7/Exa5_7.sce
new file mode 100755
index 000000000..7038aa61f
--- /dev/null
+++ b/1754/CH5/EX5.7/Exa5_7.sce
@@ -0,0 +1,19 @@
+//Exa 5.7

+clc;

+clear;

+close;

+//Given data :

+A=200;//gain without feedback(unitless)

+Dn=10;//Distortion in %

+Vi=0.5;//Initial input voltage in volt

+Beta=0.05;//feedback ratio (unitless)

+//Formula : Af=A/(1+A*Beta)

+Af=A/(1+A*Beta);//gain with feedback(unitless)

+disp(Af,"New gain :");

+Dn_dash=Dn/(1+A*Beta);//new distortion in %

+disp(Dn_dash,"Distortion with negative feedback in % : ");

+InitialOutputVoltage=A*Vi;//in Volt

+disp(InitialOutputVoltage,"Initial Output Voltage in volt:");

+NewInputVoltage=InitialOutputVoltage/Af;//in volt

+disp(NewInputVoltage,"New Input Voltage in volts :");

+//Note :Ans of Af and  NewInputVoltage is not acurate in the book.
\ No newline at end of file
diff --git a/1754/CH5/EX5.8/Exa5_8.sce b/1754/CH5/EX5.8/Exa5_8.sce
new file mode 100755
index 000000000..64807fd57
--- /dev/null
+++ b/1754/CH5/EX5.8/Exa5_8.sce
@@ -0,0 +1,27 @@
+//Exa 5.8

+clc;

+clear;

+close;

+//Given data :

+A=10000;//gain without feedback(unitless)

+Zi=10;//in kOhm

+Zo=100;//in Ohm

+R1=2;//in Ohm

+R2=18;//in Ohm

+//Part (i) :

+Beta=R1/(R1+R2);//feedback fraction(unitless)

+disp(Beta,"(i) Feedback Fraction :");

+//Part (ii) :

+Af=A/(1+A*Beta);//Gain with negative feedback(unitless)

+disp(round(Af),"(ii) Gain with negative feedback :");

+//Part (iii) :

+inputVoltge=0.5;//in mV

+outputVoltge=Af*inputVoltge;//in mV

+disp(round(outputVoltge),"(iii) Output Voltage in milli volts :");

+//Part (iv) :

+Zif=Zi*(1+Beta*A);//in kOhm

+disp(Zif*10^-3,"(iv) Input impedance of feedback amplifier in Mohm : ");

+//Part (v) :

+Zof=Zo/(1+Beta*A);//in kOhm

+format('v',4);

+disp(Zof,"(v) Output impedance with feedback in Ohm : ");
\ No newline at end of file
diff --git a/1754/CH5/EX5.9/Exa5_9.sce b/1754/CH5/EX5.9/Exa5_9.sce
new file mode 100755
index 000000000..859a3a7c0
--- /dev/null
+++ b/1754/CH5/EX5.9/Exa5_9.sce
@@ -0,0 +1,18 @@
+//Exa 5.9

+clc;

+clear;

+close;

+//Given data :

+A=200;//gain without feedback(unitless)

+Ri=2;//in kOhm

+Ro=12;//in kOhm

+Beta=0.02;//feedbak ratio(unitless)

+//Part (i) :

+Af=A/(1+A*Beta);//gain with feedback(unitless)

+disp(Af,"(i) Gain with Negative Feedback :");

+//Part (ii) :

+Rif=Ri*(1+A*Beta);//in kOhm

+disp(Rif,"(ii) Input resistance with feedback in kOhm :");

+//Part (ii) :

+Rof=Ro/(1+A*Beta);//in kOhm

+disp(Rof,"(ii) Output resistance with feedback in kOhm :");
\ No newline at end of file