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@@ -1,123 +0,0 @@
-{
- "metadata": {
-  "name": "",
-  "signature": "sha256:268207babca50d59c46d454ea7ce41b37f6eaad8a022bc43c98526f17a497ebd"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
-  {
-   "cells": [
-    {
-     "cell_type": "heading",
-     "level": 1,
-     "metadata": {},
-     "source": [
-      "chapter 4 Amplitude Modulator and Demodulator circuits"
-     ]
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "Example 4.1 Page no 129"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "#given\n",
-      "\n",
-      "Vcc =48\n",
-      "I = 3.5\n",
-      "efficiency =70                           #percent\n",
-      "modulation = 67                          #percent\n",
-      "m = modulation/100.0\n",
-      "#calculation\n",
-      "\n",
-      "Pi = Vcc*I\n",
-      "Pc=Pi\n",
-      "Pm = Pi/2.0\n",
-      "Pout = (efficiency*Pi)/100.0\n",
-      "Ps = Pc*((m**2)/4.0)\n",
-      "maximum_swing = 2*Vcc \n",
-      "#Result\n",
-      "\n",
-      "print \"(a) RF input power to the output stage is \",Pi,\"W\"\n",
-      "print \"(b) AF power required for 100 percent modulation is \",Pm,\"W\"\n",
-      "print \"(c) Carrier output power is \",Pout,\"W\"\n",
-      "print \"(d) Power in one sideband for 67 percent modulation is \",round(Ps,2),\"W\"\n",
-      "print \"(e) maximum and minimum dc supply voltage swing with 100 percent modulation is \",maximum_swing,\"V\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "(a) RF input power to the output stage is  168.0 W\n",
-        "(b) AF power required for 100 percent modulation is  84.0 W\n",
-        "(c) Carrier output power is  117.6 W\n",
-        "(d) Power in one sideband for 67 percent modulation is  18.85 W\n",
-        "(e) maximum and minimum dc supply voltage swing with 100 percent modulation is  96 V\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
-    },
-    {
-     "cell_type": "heading",
-     "level": 2,
-     "metadata": {},
-     "source": [
-      "Example 4.2 Page no 145"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "#given\n",
-      "\n",
-      "fc =4.2*10**6\n",
-      "f1 = 300\n",
-      "f2 = 3400\n",
-      "#calculation\n",
-      "#upper sideband\n",
-      "\n",
-      "x0=fc+f1\n",
-      "y0=fc+f2\n",
-      "#lower sideband\n",
-      "\n",
-      "x1=fc-f1\n",
-      "y1=fc-f2\n",
-      "frequency=(x1+y1)/2.0\n",
-      "#Result \n",
-      "\n",
-      "print \"(a) Upper sideband ranges from \",x0,\"to\",y0\n",
-      "print \"    lower sideband ranges from \",x1,\"to\",y1\n",
-      "print \"(b) approximate center frequency of a bandpass filter is \",frequency,\"Hz\""
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "(a) Upper sideband ranges from  4200300.0 to 4203400.0\n",
-        "    lower sideband ranges from  4199700.0 to 4196600.0\n",
-        "(b) approximate center frequency of a bandpass filter is  4198150.0 Hz\n"
-       ]
-      }
-     ],
-     "prompt_number": 29
-    }
-   ],
-   "metadata": {}
-  }
- ]
-}
-\ No newline at end of file