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 A  sample_notebooks/MeenaChandrupatla/Chapter_2_The_Device.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 2 The Device"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 2.1,Page number 7"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "value of voltage safety factor= 2.56\n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import pi,sqrt\n",
+    "import math \n",
+    "Vpiv=1500                   # peak inverse voltage\n",
+    "V=415                       # main supply\n",
+    "Vf=Vpiv/(sqrt(2)*V)         # voltage safety factor\n",
+    "Vf=round(Vf,2)\n",
+    "print  'value of voltage safety factor=',Vf"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 2.2,Page number 7"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "value of peak inverse voltage= 683.07 volts\n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import pi,sqrt\n",
+    "import math \n",
+    "Vf=2.1                    # voltage safety factor \n",
+    "V=230                     # main supply\n",
+    "Vpiv=sqrt(2)*Vf*V         # peak inverse voltage\n",
+    "Vpiv=round(Vpiv,2)\n",
+    "print 'value of peak inverse voltage=',Vpiv,'volts'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 2.3,Page number 8"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "value of capacitive current= 0.0045 Amp\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math \n",
+    "C=30*10**-12                       # equivalent capacitance \n",
+    "diffV=150*10**6                    # dv/dt value of capacitor\n",
+    "Ic=C*(diffV)                       # capacitive current\n",
+    "print 'value of capacitive current=',Ic,'Amp'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 2.4,Page number 8"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "value of equivalent capacitance= 28.57 pico farad\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math \n",
+    "Ic=5.0                      # capacitive current in milli amperes\n",
+    "difV=175.0                  # dv/dt value in mega V/s\n",
+    "C=Ic/(difV)*10**3         # equivalent capacitance in pico farad\n",
+    "C=round(C,2)\n",
+    "print 'value of equivalent capacitance=',C,'pico farad'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 2.5,Page number 8"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "value of dv/dt= 240000000.0 v/s\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math \n",
+    "Ic=6*10**-3             # capacitive current\n",
+    "C=25*10**-12            # equivalent capacitance\n",
+    "diffV=Ic/C              # dv/dt value of capacitor\n",
+    "print 'value of dv/dt=',diffV,'v/s'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 2.6,Page number 9"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "value of dv/dt that can trigger the device= 142 V/microseconds\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math \n",
+    "Ic=5              # capacitive current in milli amperes\n",
+    "C=35              # equivalent capacitance in pico farad\n",
+    "difV=Ic*10**3/C   # value of dv/dt that can trigger the device in V/ microseconds\n",
+    "print  'value of dv/dt that can trigger the device=',difV,'V/microseconds'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 2.7,Page number 9"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "value of voltage safety factor= 2.3 v\n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import sqrt\n",
+    "import math \n",
+    "Vpiv=1350            # peak inverse voltage in volts\n",
+    "V=415                # main supply in volts\n",
+    "Vf=Vpiv/(sqrt(2)*V)  # voltage safety factor\n",
+    "Vf=round(Vf,2)\n",
+    "print  'value of voltage safety factor=',Vf,'v'"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.10"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}