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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:599e62479fb81312d9e71ded8b631cb3f6c046aff5ae2a1f3f8129c2f46ca250"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 13:Oscillators"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "Example 13.1 Page no.421"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "L=58.6*10**(-6)                         # H, inductance\n",
+      "C=300*10**(-12)                        # F, capacitance\n",
+      "\n",
+      "#Calculation\n",
+      "import math\n",
+      "fo=1/(2*math.pi*math.sqrt(L*C))\n",
+      "\n",
+      "#Result\n",
+      "print \" The Frequency of Oscillation of Tuned Collector Oscillator is fo =  \",round(fo/10**3,2),\"KHz\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        " The Frequency of Oscillation of Tuned Collector Oscillator is fo =   1200.36 KHz\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "Example 13.2 Page no.427"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "R=100000.0                                   # Ohms, resistance\n",
+      "C=0.01*10**(-6)                           #F, capacitance\n",
+      "\n",
+      "#Calculation\n",
+      "import math\n",
+      "fo=1/(2*math.pi*R*C*math.sqrt(6))\n",
+      "#Result\n",
+      "print \"The Frequency of Oscillation of Vacuum Tube Phase Shift Oscillator is fo =  \",round(fo,2),\"Hz\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Frequency of Oscillation of Vacuum Tube Phase Shift Oscillator is fo =   64.97 Hz\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "Example 13.3 Page no.427"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "R1=220000.0                                  # Ohms, Resistance 1\n",
+      "R2=220000.0                                  # Ohms Resistance  2\n",
+      "C1=250*10**(-12)                        #F, capacitance 1 \n",
+      "C2=250*10**(-12)                        #F, capacitance 2\n",
+      "\n",
+      "#Calculation\n",
+      "import math\n",
+      "fo=1/(2*math.pi*math.sqrt(R1*C1*R2*C2))\n",
+      "# Result\n",
+      "print \"The Frequency of Oscillation of Wein Bridge Oscillator is fo =  \",round(fo/10**3,2),\"KHz\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The Frequency of Oscillation of Wein Bridge Oscillator is fo =   2.89 KHz\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file