initial commit / add all books

7 files changed, 151 insertions, 0 deletions

diff --git a/2528/CH8/EX8.1/Ex8_1.sce b/2528/CH8/EX8.1/Ex8_1.sce
new file mode 100755
index 000000000..9f582d514
--- /dev/null
+++ b/2528/CH8/EX8.1/Ex8_1.sce
@@ -0,0 +1,15 @@
+// Chapter8

+// Page.No-263

+// Example8_1

+// Figure 8.4

+// Output of Voltage and Current

+// Given

+clear;clc;

+R1=5000;           //In Ohm

+R2=20000;           //In Ohm

+R3=10000;           //In Ohm

+Vz=3.9;         //In V

+Vl=Vz*(R2+R3)/R3;

+printf("\n Output Load Voltage Vl is = %.2f V\n",Vl); // Result

+Iz=(Vl-Vz)/R1;

+printf("\n Output Zener Current Iz is = %.5f A \n",Iz); // Result

diff --git a/2528/CH8/EX8.2/Ex8_2.sce b/2528/CH8/EX8.2/Ex8_2.sce
new file mode 100755
index 000000000..9c693fc0c
--- /dev/null
+++ b/2528/CH8/EX8.2/Ex8_2.sce
@@ -0,0 +1,29 @@
+// Chapter8

+// Page.No-264

+// Example8_2

+// Figure 8.4

+// Power dissipation for Q1

+// Page.No-264

+// Example_8_2

+// Figure 8.4

+// Given

+clear;clc;

+Vl=11.7;            //in V

+Rl=20;           //in Ohm

+Il=Vl/Rl;

+printf("\n Output Load Current Il is = %.3f A \n",Il); // Result

+Vc=20; Ve=11.7;     //in V

+Vce=Vc-Ve;

+printf("\n Output Load Voltage Vce is = %.2f V\n",Vce); // Result

+Pd=Il*Vce;

+printf("\n Power dissiption Pd is = %.2f W \n",Pd); // Result

+Ib=0.020;                   //in Amp

+B=Il/Ib;

+printf("\n Beta is = %.2f  \n",B); // Result

+Pl=Il*Vl;

+printf("\n Power dissiption across load ,Pl is = %.3f W \n",Pl); // Result

+Vin=20;             //in V

+Pin=Il*Vin;         //Iin=Il

+printf("\n Input Power dissiption ,Pin is = %.2f W \n",Pin); // Result

+n=Pl/Pin;

+printf("\n Efficiency   is = %.3f or %.1f  percent \n",n,n*100); // Result

diff --git a/2528/CH8/EX8.3/Ex8_3.sce b/2528/CH8/EX8.3/Ex8_3.sce
new file mode 100755
index 000000000..d006efe2c
--- /dev/null
+++ b/2528/CH8/EX8.3/Ex8_3.sce
@@ -0,0 +1,12 @@
+// Chapter8

+// Value of R2 

+// Page.No-272

+// Example8_3

+// Given

+clear;clc;

+Vm=1.25;            //in V

+Vout=15;            //in V

+R1=240;           //in Ohm

+R2=R1*((Vout/Vm)-1);

+printf("\n Value for R2 is = %.2f Ohm\n",R2); // Result

+

diff --git a/2528/CH8/EX8.4/Ex8_4.sce b/2528/CH8/EX8.4/Ex8_4.sce
new file mode 100755
index 000000000..0cbd8b4b2
--- /dev/null
+++ b/2528/CH8/EX8.4/Ex8_4.sce
@@ -0,0 +1,18 @@
+// Chapter8

+// 12V Voltage Regulator 

+// Page.No-279

+// Example8_4

+//Figure 8.17

+// Given

+clear;clc;

+Vref=7.15;            //in V

+Vout=12;            //in V

+Ilimit=0.050;           //in Amp

+R2=10000;           //in Ohm

+R1=Vout*R2/Vref-R2;

+printf("\n Value of R1 is = %.f Ohm\n",R1); // Result

+Vsense=0.65;            //in V

+Rsc=Vsense/Ilimit;

+printf("\n Value of current sense resistor is = %.f Ohm\n",Rsc); // Result

+R3=R1*R2/(R1+R2);

+printf("\n Value of minimum drift resistor is = %.f Ohm\n",R3); // Result

diff --git a/2528/CH8/EX8.5/Ex8_5.sce b/2528/CH8/EX8.5/Ex8_5.sce
new file mode 100755
index 000000000..280f9c82b
--- /dev/null
+++ b/2528/CH8/EX8.5/Ex8_5.sce
@@ -0,0 +1,37 @@
+// Chapter8

+// Design  a contineously adjusted supply b/w 2V to 5 V

+// Page.No-279

+// Example8_5

+//Figure 8.15.1

+// Given

+clear;clc;

+Vref=7.15;            //in V

+Vout=5;            //in V

+//(R1b+R2)/R2=Vref/Vout;

+printf("\n For maximum case (R1b+R2)/R2 is = %.2f \n",Vref/Vout); // Result

+R2=1;              // In Ohm (Assumption)

+R1b=Vref/Vout-1;

+printf("\n For R2=1 Ohm R1b:R2 is = %.2f:%.0f \n",R1b,R2); // Result

+Voutm=2;           // in V

+printf("\n For maximum case (R1a+R1b+R2)/R2 is = %.3f \n",Vref/Voutm); // Result

+R1a=Vref/Voutm-1-0.43;

+printf("\n For R2=1 Ohm R1b:R2 is = %.3f:%.0f \n",R1a,R2); // Result

+R1a=10000;          //in Ohm        (Assumption)

+R2=R1a/2.145;

+printf("\n Value of R2 is = %.f Ohm\n",R2); // Result

+//Similarly

+R1b=R2*0.43;

+printf("\n Value of R1b is = %.f Ohm\n",R1b); // Result

+//Ilimit=Vsense/rsc;

+Vsense=0.65;            //in V

+Ilimit=1;           //in Amp

+Rsc=Vsense/Ilimit;

+printf("\n Value of current sense resistor is = %.f Ohm\n",Rsc); // Result

+R1=6000;                //in Ohm

+R3=R1*R2/(R1+R2);

+printf("\n Value of minimum drift resistor is = %.f Ohm\n",R3); // Result

+Ic=1;               //in Amp

+Ib=0.150;           //in Amp

+B=Ic/Ib;

+printf("\n Value of B minimum  = %.2f \n",B); // Result

+

diff --git a/2528/CH8/EX8.6/Ex8_6.sce b/2528/CH8/EX8.6/Ex8_6.sce
new file mode 100755
index 000000000..432c4e3e0
--- /dev/null
+++ b/2528/CH8/EX8.6/Ex8_6.sce
@@ -0,0 +1,26 @@
+// Chapter8

+// Design  a step down regulator

+// Page.No-288

+// Example8_6

+//Figure 8.27

+// Given

+clear;clc;

+Vout=12;            //in V

+R2=10000;          //in Ohm        (Assumption)

+R1=R2*(Vout-1);

+printf("\n Value of R1 is = %.f Ohm\n",R1); // Result

+Isw=0.75;               //in Amp

+R3=0.11/Isw;

+printf("\n Value of R3 is = %.2f Ohm\n",R3); // Result

+Iout=0.200;         //in Amp

+Df=0.2;

+delI =2*Iout*Df;

+printf("\n Value of del I is = %.3f Amp\n",delI); // Result

+F=50000;           //in Hz

+Vin=20;         //in V

+L1=Vout*(Vin-Vout)/(delI*Vin*F);

+printf("\n Value of L1 is = %.4f H\n",L1); // Result

+Vripple=0.040;      //in V

+C2=Vout*(Vin-Vout)/(8*F^2*Vin*Vripple*L1);

+printf("\n Value of C2 is = %.6f F\n",C2); // Result

+//C2 is ste a standard of 33microF or 47microF

diff --git a/2528/CH8/EX8.7/Ex8_7.sce b/2528/CH8/EX8.7/Ex8_7.sce
new file mode 100755
index 000000000..3da1fc8a9
--- /dev/null
+++ b/2528/CH8/EX8.7/Ex8_7.sce
@@ -0,0 +1,14 @@
+// Chapter8

+// Determine appropiate heat sink rating

+// Page.No-296

+// Example8_7

+//Figure 8.34

+// Given

+clear;clc;

+Tj=150;           // in degree C

+Ta=40;           // in degree C

+Qjc=3.0;          // in  C/W

+Qcs=1.6;          // in  C/W

+PD=6;           //in W

+Qsa=(Tj-Ta)/PD - Qjc-Qcs;

+printf("\n Value of Qsa = %.2f C/W\n",Qsa); // Result