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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 13: Networks"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 13.1: Calculate_R9_R7_R8_C4.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Chapter 13\n",
+"//page no 568\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Vcc=5;                  //in V\n",
+"Vf=1.5;             //in V\n",
+"If=60;              //in mA\n",
+"B=3.97;\n",
+"N=3;\n",
+"R9=(Vcc-Vf)*(B+1)/If/10^-3;\n",
+"printf('\n R9 = %0.0f ohm\n',R9);\n",
+"R7=R9/2/B-3/N;\n",
+"printf('\n R7 = %0.1f ohm\n',R7);\n",
+"R8=R9/2/B;\n",
+"printf('\n R8 = %0.1f ohm\n',R8);\n",
+"C4=2*10^-9/R8;\n",
+"printf('\n C4 = %0.0f pF',C4*10^12);\n",
+""
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 13.2: Calculate_Led_If_R3_C4.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Chapter 13\n",
+"//page no 569\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Vu3=1.24;           //in V\n",
+"Vbeq3=0.7;          //in V\n",
+"Vbeq4=0.7;          //in V\n",
+"R5=17.5;            //in Ohm\n",
+"R6=17.5;            //in Ohm\n",
+"Voh=5;          //in V\n",
+"Vol=0;          //in V\n",
+"If=(Vu3-Vbeq3)/R5+(Vu3-Vbeq4)/R6;\n",
+"printf('\n If= %0.1f mA\n',If*1000);\n",
+"R3=(Voh-Vol)/If;\n",
+"printf('\n R3= %0.0f ohm\n',R3);\n",
+"C4=2*10^-9/R3;\n",
+"printf('\n C4= %0.0f pF\n',C4*10^12);\n",
+"//Chapter 13\n",
+"//page no 581\n",
+"//given\n",
+"disp('Page number 581 again  Example 13-2 (numbering mistake)')\n",
+"Er=4.9;\n",
+"h=5;                //in mils\n",
+"w=10;                //in mils\n",
+"t=0.5;                //in mils\n",
+"Z=60/sqrt(0.475*Er+0.67)*log(4*h/0.67/(0.8*w+t));\n",
+"printf('\n Z = %0.1f ohm\n',Z);\n",
+"tpd=1.017*sqrt(0.475*Er+0.67);\n",
+"printf('\n tpd = %0.2f ns/ft\n',tpd);\n",
+"Tpd=tpd*1000/12;           //converted into ps/in\n",
+"printf('\n tpd = %0.2f ps/in\n',Tpd);\n",
+"Co=Tpd/Z;\n",
+"printf('\n Co = %0.1f pF/in\n',Co);\n",
+""
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 13.3: Characteristic_impedance_and_propagation_delay.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Chapter 13\n",
+"//page no 583\n",
+"//given\n",
+"clc;\n",
+"clear all;\n",
+"Er=4.7;\n",
+"b=10;                //in mils\n",
+"w=4;                //in mils\n",
+"t=0.5;                //in mils\n",
+"Z=60/sqrt(Er)*log(4*b/0.67/%pi/(0.8*w+t));\n",
+"printf('\n Z = %0.2f ohm\n',Z);\n",
+"tpd=1.017*sqrt(Er);\n",
+"printf('\n tpd = %0.1f ns/ft\n',tpd);\n",
+"Tpd=tpd*1000/12;           //converted into ps/in\n",
+"printf('\n Also,tpd = %0.0f ps/in\n',Tpd);//answer is slightly different due to rounding off "
+   ]
+   }
+],
+"metadata": {
+		  "kernelspec": {
+		   "display_name": "Scilab",
+		   "language": "scilab",
+		   "name": "scilab"
+		  },
+		  "language_info": {
+		   "file_extension": ".sce",
+		   "help_links": [
+			{
+			 "text": "MetaKernel Magics",
+			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
+			}
+		   ],
+		   "mimetype": "text/x-octave",
+		   "name": "scilab",
+		   "version": "0.7.1"
+		  }
+		 },
+		 "nbformat": 4,
+		 "nbformat_minor": 0
+}