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1 files changed, 209 insertions, 0 deletions

diff --git a/sample_notebooks/karansingh/Thyristors_Principles.ipynb b/sample_notebooks/karansingh/Thyristors_Principles.ipynb
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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:4abf44c9c11389b267bffebabb50666e37ae7ef97c6e1f36ae4dc72c5936a6d7"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Thyristors Principles & Characeristics"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 1_1 - page : 5"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Given data\n",
+      "alfa1=0.35 \n",
+      "alfa2=0.4 \n",
+      "IG=40*10**-3 #A\n",
+      "#Solution :\n",
+      "IA=alfa2*IG/(1-(alfa1+alfa2)) #A\n",
+      "print \"Anode current is %0.3f A\" %IA"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Anode current is 0.064 A\n"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 1_2 - page : 7"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Given data\n",
+      "dv_dt=190 #V/\u00b5s\n",
+      "IC=8*10**-3 #A\n",
+      "#Solution :\n",
+      "C=IC/(dv_dt/10**-6) #F\n",
+      "print \"Capacitance of depletion layer is %0.1E F : \" %C"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Capacitance of depletion layer is 4.2E-11 F : \n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 1_3 - page : 8"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Given data\n",
+      "RG=2000 #ohm\n",
+      "VCC=20 #V\n",
+      "VT=0.75 #V\n",
+      "Vthy=0.7 #V(Voltage across thyristor)\n",
+      "R=200 #ohm\n",
+      "IT=7*10**-3 #A\n",
+      "Ih=5*10**-3 #A\n",
+      "#Solution :\n",
+      "#part (a)\n",
+      "Vo=VCC #V##thyristor not conducting\n",
+      "print \"(a) When thyristor is in off state, Output voltage is %0.2f V\" %Vo\n",
+      "#part (b)\n",
+      "Vs=VT+IT*RG #V\n",
+      "print \"(b) Voltage necessary to turn on the thyristor is %0.2f V\" %Vs\n",
+      "#part (c)\n",
+      "VR1=Ih*R #V\n",
+      "print \"(c) Current through thyristor should be less than holding current. Voltage should be reduced to less than %0.2f V\" %VR1\n",
+      "#part (d)\n",
+      "VR2=VR1+Vthy #V\n",
+      "print \"(d) VCC should be reduced to less than %0.2f V\" %VR2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "(a) When thyristor is in off state, Output voltage is 20.00 V\n",
+        "(b) Voltage necessary to turn on the thyristor is 14.75 V\n",
+        "(c) Current through thyristor should be less than holding current. Voltage should be reduced to less than 1.00 V\n",
+        "(d) VCC should be reduced to less than 1.70 V\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 1_5 - page : 8"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Given data\n",
+      "Vdc=100 #V\n",
+      "L=10 #H\n",
+      "i=80*10**-3 #A\n",
+      "#Solution :\n",
+      "t=i*L/Vdc #s\n",
+      "t*=1000 # ms\n",
+      "print \"Width of pulse should be more than %0.1f milli-seconds.\" %t"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Width of pulse should be more than 8.0 milli-seconds.\n"
+       ]
+      }
+     ],
+     "prompt_number": 12
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 1_6 - page : 9"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "#Given data\n",
+      "Vdc=100 #V\n",
+      "R=10 #ohm\n",
+      "L=5 #H\n",
+      "i=50*10**-3 #A\n",
+      "#Solution :\n",
+      "#i=Vdc/R*(1-exp(-R*t/L))\n",
+      "t=-math.log(1-i/Vdc*R)/R*L #s\n",
+      "t*=1000 #ms\n",
+      "print \"Minimum width of gate pulse is %0.1f milli-seconds.\" %t\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Minimum width of gate pulse is 2.5 milli-seconds.\n"
+       ]
+      }
+     ],
+     "prompt_number": 14
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
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