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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 8: AMPLITUDE MODULATION"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 8.11_1: exampple_4.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"//page no 274\n",
+"//prob no. 8.11.1\n",
+"//RC load ckt for diode detector with c=1000pF in paralel with R=10Kohm\n",
+"fm=10*10^3;//modulation freq\n",
+"c=1000*10^-12;R=10*10^3;\n",
+"Yp=(1/R)+((%i)*2*(%pi)*fm*c);//admittance of RC load\n",
+"disp(Yp);\n",
+"Zp=1/sqrt((real(Yp)^2)+(imag(Yp)^2));\n",
+"disp(Zp);\n",
+"//Determination of max modulation index\n",
+"m=Zp/R;\n",
+"disp(m,'The max modulation index is');"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 8.3_1: example_1.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"//page no 257\n",
+"//prob no. 8.3.1\n",
+"//A modulating signal with zero dc component & vpp=11,vcp=10 carrier peak voltage\n",
+"vpp=11;//peak to peak voltage of modulating signal\n",
+"vcp=10;//carrier peak voltage\n",
+"//Determination of modulation index\n",
+"E_max=vcp+(vpp/2);\n",
+"E_min=vcp-(vpp/2);\n",
+"m=(E_max-E_min)/(E_max+E_min);\n",
+"disp(m,'The modulation index is');\n",
+"//determination of kratio of side lengths\n",
+"L1_L2=E_max/E_min;\n",
+"disp(L1_L2,'The ratio of side lengths L1/L2 is');"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 8.5_1: example_2.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"//page no 260\n",
+"//prob no. 8.5.1\n",
+"//A carrier with fc=10MHz & vp=10V modulated with fm=5kHz & Vm=6V\n",
+"fc=10*10^6;//Carrier freq\n",
+"fm=5*10^3;//Modullating freq\n",
+"vp=10;vm=6;\n",
+"//Determination of modulation index\n",
+"m=vm/vp;\n",
+"disp(m,'The modulation index is');"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 8.7_1: example_3.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc;\n",
+"//page no 263\n",
+"//prob no. 8.7.1\n",
+"//AM radio Tx=10A when unmodulated & 12A when modulated\n",
+"I=12;Ic=10;\n",
+"//Determination of modulation index\n",
+"m=sqrt(2*(((I/Ic)^2)-1));\n",
+"disp(m,'The modulation index is');"
+   ]
+   }
+],
+"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
+}