initial commit / add all books

7 files changed, 210 insertions, 0 deletions

diff --git a/1514/CH17/EX17.1/17_1.sce b/1514/CH17/EX17.1/17_1.sce
new file mode 100755
index 000000000..11d4dc262
--- /dev/null
+++ b/1514/CH17/EX17.1/17_1.sce
@@ -0,0 +1,36 @@
+//chapter 17

+//example 17.1

+//page 518

+clear;

+clc ;

+//given

+//dc load line

+Vcc=13;//supply voltage

+R1=4.7;R2=3.7;RE=1;

+Rpy=40;

+N1=74;N2=14;

+Rl=56;

+//plot point A(Vce,Ic)=(Vcc,0)

+VB=Vcc*R2/(R1+R2);

+VE=VB;

+VBE=VB-0.7;

+IE=VE/RE;

+IC=IE;

+VCE=Vcc-IC*(Rpy+RE);//plot point Q(VCE,IC)=(8,5)

+

+VCE=[13,8];

+IC=[0,5];

+plot(VCE,IC)

+xtitle('dc load line','VCE in V','IC in mA')

+

+//ac load line

+Rl'==(N1/N2)^2*Rl;

+//total ac load

+Rlac=(Rpy+Rl')/1000;

+deltaIC=5;

+deltaVCE=deltaIC*Rlac;

+//point B(VCE,IC)=(16,0)

+VCE=[8,16];

+IC=[5,0];

+figure,plot(VCE,IC,'r-.');

+xtitle('ac load line','VCE in V','IC in mA')

diff --git a/1514/CH17/EX17.2/17_2.sce b/1514/CH17/EX17.2/17_2.sce
new file mode 100755
index 000000000..df97faa8c
--- /dev/null
+++ b/1514/CH17/EX17.2/17_2.sce
@@ -0,0 +1,21 @@
+//chapter 17

+//example 17.2

+//page 522

+clear all;

+clc ;

+//given

+eta=80;//Xformer efficiency

+Vcc=13;//supply voltage

+ICQ=5;

+Pi=Vcc*ICQ;//ip power dissipation in mW

+VCEQ=8;

+Vp=VCEQ;

+ICEQ=5;

+Ip=ICEQ;

+//power delivered to Xformer primary

+Po1=(Vp*Ip)/2;

+//Xformer op power

+Po = eta * Po1 ;//mW

+//ckt efficiency

+efficiency=(Po/Pi);

+printf("\nMaximum ckt efficiency of class A amplifier =%.1f%%",efficiency);

diff --git a/1514/CH17/EX17.3/17_3.sce b/1514/CH17/EX17.3/17_3.sce
new file mode 100755
index 000000000..6900913d7
--- /dev/null
+++ b/1514/CH17/EX17.3/17_3.sce
@@ -0,0 +1,29 @@
+//chapter 17

+//example 17.3

+//page 528

+clear all;

+clc ;

+//given

+Rl=16;//load resistance

+Vcc=30;//supply voltage

+eta=0.8;//Xformer efficiency

+Po=4;

+Po1=Po/eta;//ac power delivered to Xformer primary

+Vp=Vcc;

+Rl1=(Vp^2)/(2*Po1);

+Rl2=4*Rl1;

+printf("\nTransformer specification are:\nPo=%d W\nRl=%d ohm\nRl'''' =%d ohm center tapped",Po,Rl,Rl2);

+//max Xtor vol

+Vcemax=2*Vcc;

+Ip=(2*Po1)/Vp;

+//max Xtor current

+Icmax=1000*Ip;

+//dc ip power

+Iavg=0.636*Ip*1000;

+Pi=10^-3*Vcc*Iavg;

+//power in each op Xtor

+Pr=(Pi-Po1)/2;

+printf("\nTransistor specification are:\nPr=%.2f W\nVcemax=%d V\nIcmax=%d mA",Pr,Vcemax,Icmax);

+

+

+

diff --git a/1514/CH17/EX17.4/17_4.sce b/1514/CH17/EX17.4/17_4.sce
new file mode 100755
index 000000000..579fa6171
--- /dev/null
+++ b/1514/CH17/EX17.4/17_4.sce
@@ -0,0 +1,38 @@
+//chapter 17

+//example 17.4

+//page 523

+clear all;

+clc ;

+//given

+Rl=100;//load resistance

+Po=0.5;//output power

+//peak output voltage

+Vp=sqrt(2*Rl*Po);

+//peak output current

+Ip=1000*(2*Po)/Vp;

+Vr6=0.1*Vp;

+Vr7=Vr6;

+R6=1000*Vr6/Ip;

+R7=R6;

+//quiscent current

+Iq2=Ip/10;

+//dc voltage across R4

+Vr4dc=0.7+10^-3*Iq2*(R6+R7)+0.7;

+//bias components for Q2 &Q3

+deltaVB=Vp+Vr6;

+Vce1dc=deltaVB+1;

+Vr3dc=Vce1dc;

+Vr5=5;//bias stabiliy

+Vcc=Vr5+Vce1dc+Vr4dc+Vr3dc;

+printf("\nVCC=%.1f V,use VCC=30 V",Vcc);Vcc=30;

+//Icq1>>Ibmax

+hfe=50;//assuming equal for all 3 Xtors

+Ibmax=Ip/hfe;

+Icq1=10;

+R3=Vr3dc/Icq1;

+R4=1000*Vr4dc/Icq1;

+printf("\nR3=%.1f kohm, standard value ",R3);

+printf("\nR4=%d kohm,use standard value 200 ohm",ceil(R4));

+printf("\nR6=R7=%d ohm",R6);

+

+

diff --git a/1514/CH17/EX17.5/17_5.sce b/1514/CH17/EX17.5/17_5.sce
new file mode 100755
index 000000000..f2d4bdeed
--- /dev/null
+++ b/1514/CH17/EX17.5/17_5.sce
@@ -0,0 +1,24 @@
+//chapter 17

+//example 17.5

+//page 535

+clear all;

+clc ;

+//given

+f1=20;//lower cutoff frequency Hz

+R3=1.2;//kohm

+Rl=100;//ohm

+Vcc=30;

+//Xc2<<R3 at f1

+C2=1000/(2*%pi*f1*R3/10);

+printf("\nc2=%.1f microF,use standard value 75 microF",C2);

+XC4=Rl;

+C4=10^6/(2*%pi*f1*Rl);

+printf("\nc4=%.1f microF,use standard value 80 microF",C4);

+Ip=100;

+Vcemax=Vcc;

+Icmax=1.1*Ip;

+//dc ip power

+Pidc=(Vcc*0.35*Ip)/1000;

+Poac=0.5;

+Pr=(Pidc-Poac)*0.5;

+printf("\nTransistor specification are:\nPr=%.2f W,Vcemax=%d V,Icmax=%d mA",Pr,Vcemax,Icmax);

diff --git a/1514/CH17/EX17.6/17_6.sce b/1514/CH17/EX17.6/17_6.sce
new file mode 100755
index 000000000..2fda8d819
--- /dev/null
+++ b/1514/CH17/EX17.6/17_6.sce
@@ -0,0 +1,33 @@
+//chapter 17

+//example 17.6

+//page 543

+clear all;

+clc ;

+//given

+Rl=50;//load resistance

+Po=10;//op power

+//peak op voltage

+Vp=round(sqrt(2*Rl*Po));

+Vr14=0.1*Vp;//when Ip flows

+Vr15=Vr14;;

+Vce4min=1

+Vce3min=Vce4min;

+Vr9=3;

+Vr10=Vr9;

+Vcc=ceil(Vp+Vr14+Vce3min+0.7+Vr9);

+printf("\nVCC=%d V",Vcc);

+Ip=1000*(2*Po)/Vp;

+//dc ip power

+Iavg=0.636*Ip*1.1;

+Pi=10^-3*Vcc*Iavg;Pi=17.5;

+//power in each op Xtor Q7 & Q8

+Pr1=(Pi-Po)/2;

+Vcemax=Vcc-(-40);

+Icmax=ceil(1.1*Ip);

+printf("\nTransistor specification for Q7,Q8 are:\nPr=%.2f W,Vcemax=%d V,Icmax=%d mA",Pr1,Vcemax,Icmax);

+//power in each op Xtor Q5 & Q6

+Vcemax=2*Vcc;

+hfe=30;

+Icmax=ceil(1.1*Ip/hfe);

+Pr=1000*Pr1/hfe;

+printf("\nTransistor specification for Q5,Q6 are:\nPr=%d W,Vcemax=%d V,Icmax=%d mA",Pr,Vcemax,Icmax);

diff --git a/1514/CH17/EX17.7/17_7.sce b/1514/CH17/EX17.7/17_7.sce
new file mode 100755
index 000000000..87d520248
--- /dev/null
+++ b/1514/CH17/EX17.7/17_7.sce
@@ -0,0 +1,29 @@
+//chapter 17

+//example 17.7

+//page 547

+clear;

+clc ;

+//given

+Rl=10;//load resistance

+Po=5;//op power

+Rdsmin=4;

+gm=250;//mA/V

+//peak op voltage

+Vp=round(sqrt(2*Rl*Po));

+Rl=20;

+Ip=Vp/Rl;

+//supply voltage

+Vcc=[Vp+(Ip*Rdsmin)];

+printf("\nVCC=+-%d V",Vcc);

+Vth=1;

+Vr13=Vth;Vr14=Vth;

+deltaVr14=10^-3*Ip/gm;

+deltaVr13=deltaVr14;

+//to avoid turn off of Q1,let 

+deltaVr3=2;

+Vr3=deltaVr3+1;

+Vr7=Vr3;Vr6=Vr3;

+//to avoid saturation of Q2

+Vce2=Vp+Vr7+1;

+Vr4r5=2*Vcc-Vr6-Vr7-Vce2;

+printf("\nVoltage drops across R3,R6,R7 is %d V and across R4+R5 is %d V",Vr3,Vr4r5)