From 92cca121f959c6616e3da431c1e2d23c4fa5e886 Mon Sep 17 00:00:00 2001
From: hardythe1
Date: Tue, 7 Apr 2015 15:58:05 +0530
Subject: added books
---
Electronic_Devices_and_Circuits/Chapter20_2.ipynb | 434 ++++++++++++++++++++++
1 file changed, 434 insertions(+)
create mode 100755 Electronic_Devices_and_Circuits/Chapter20_2.ipynb
(limited to 'Electronic_Devices_and_Circuits/Chapter20_2.ipynb')
diff --git a/Electronic_Devices_and_Circuits/Chapter20_2.ipynb b/Electronic_Devices_and_Circuits/Chapter20_2.ipynb
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+{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 20 : Thyristors "
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 20.1, Page No 902"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "Vs=25.0\n",
+ "Vtm=1.7\n",
+ "Rl=25.0\n",
+ "Ih=5*10**-3\n",
+ "\n",
+ "#Calculations\n",
+ "Vspk=1.414*Vs\n",
+ "Ilpk=(Vs-Vtm)/Rl\n",
+ "print(\" for half wave rectifier sinusodial waveform\")\n",
+ "Ilrms=.5*Ilpk\n",
+ "es=Vtm+(Ih*Rl)\n",
+ "\n",
+ "#Results\n",
+ "print(\" switch-off voltage =%.2f v\" %es)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " for half wave rectifier sinusodial waveform\n",
+ " switch-off voltage =1.82 v\n"
+ ]
+ }
+ ],
+ "prompt_number": 15
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 20.2, Page No 905"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "Vs=30.0\n",
+ "Vd1=.7\n",
+ "Vg=.8\n",
+ "Ig=200*10**-6\n",
+ "\n",
+ "#Calculations\n",
+ "Vspk=1.414*Vs\n",
+ "print(\" at 5 degree\")\n",
+ "es=Vspk*.087 # sin5=.087\n",
+ "print(\" at 90 degree\")\n",
+ "es=Vspk\n",
+ "Vt=Vd1+Vg\n",
+ "print(\" to trigger at es=3.7V the R2 moving contact is at the top\")\n",
+ "es=3.7\n",
+ "Vr1=es-Vt\n",
+ "I1=1*10**-3\n",
+ "R1=Vr1/I1\n",
+ "R=Vt/I1 #R=R2+R3\n",
+ "es=42.4\n",
+ "Vr3=Vt\n",
+ "I1=es/(R+R1)\n",
+ "R3=Vt/I1\n",
+ "R2=R-R3\n",
+ "\n",
+ "#Results\n",
+ "print(\" To trigger at es =42.4 the R2 moving contact at the bottom =%.2f\" %R2)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " at 5 degree\n",
+ " at 90 degree\n",
+ " to trigger at es=3.7V the R2 moving contact is at the top\n",
+ " To trigger at es =42.4 the R2 moving contact at the bottom =1369.10\n"
+ ]
+ }
+ ],
+ "prompt_number": 16
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 20.3 Page No 906"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "R1=2.2*10**3\n",
+ "R2=1.5*10**3\n",
+ "R3=120.0\n",
+ "Vt=1.5\n",
+ "\n",
+ "#Calculations\n",
+ "Vak1=Vt*((R1+R2+R3)/(R3+.5*R2))\n",
+ "Vak2=Vt*((R1+R2+R3)/R3)\n",
+ "\n",
+ "\n",
+ "#Results\n",
+ "print(\" with R2 contact at center = %.2f\" %Vak1)\n",
+ "print(\" with R2 contact at zero = %.2f\" %Vak2)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " with R2 contact at center = 6.59\n",
+ " with R2 contact at zero = 47.75\n"
+ ]
+ }
+ ],
+ "prompt_number": 17
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 20.4, Page No 911"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "Vs=5.0\n",
+ "Ilmax=300*10**-3\n",
+ "Vl=7.0\n",
+ "Vg=0.8\n",
+ "\n",
+ "\n",
+ "#Calculations\n",
+ "Vz=Vl-Vg\n",
+ "print(\" for D1, select a 1N753 with Vz=6.2\")\n",
+ "Izmin=1*10**-3\n",
+ "R1=Vg/Izmin\n",
+ "\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of R1 is %d kohm \" %R1)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " for D1, select a 1N753 with Vz=6.2\n",
+ "The value of R1 is 800 kohm \n"
+ ]
+ }
+ ],
+ "prompt_number": 18
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 20.5 Page No 911"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "R1=25*10**3\n",
+ "R2=2.7*10**3\n",
+ "C1=3*10**-6\n",
+ "Vg=0.8\n",
+ "Vd1=8.0\n",
+ "Vs=115.0\n",
+ "f=60.0\n",
+ "\n",
+ "#Calculations\n",
+ "Vc1=Vd1+Vg\n",
+ "#assume the average charging voltage is\n",
+ "Vac=1.414*Vs\n",
+ "E=.636*Vac\n",
+ "#average charging\n",
+ "Ic=E/(R1+R2)\n",
+ "#charging time\n",
+ "t=(C1*Vc1)/Ic\n",
+ "T=1/f\n",
+ "q=(t*360)/T\n",
+ "a=180-q\n",
+ "\n",
+ "#Results\n",
+ "print(\"Conduction angle =%.2f degrees\" %a)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Conduction angle =27.27 degrees\n"
+ ]
+ }
+ ],
+ "prompt_number": 19
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 20.6 Page No 925"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "Vs=10.0\n",
+ "Vf=1.7\n",
+ "Is=500*10**-6\n",
+ "Ih=1.5*10**-3\n",
+ "E=30.0\n",
+ "\n",
+ "#Calculations\n",
+ "R=27*10**3\n",
+ "C=0.5*10**-6\n",
+ "R1max=(E-Vs)/Is\n",
+ "R1min=(E-Vf)/Ih\n",
+ "t=C*R*math.log((E-Vf)/(E-Vs))\n",
+ "\n",
+ "\n",
+ "#Results\n",
+ "print(\"Capacitor charging time is %3.4f s\" %t)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Capacitor charging time is 0.0047 s\n"
+ ]
+ }
+ ],
+ "prompt_number": 20
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 20.7, Page No 931"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "Rbb=4.0*10**3\n",
+ "Pd25=360.0*10**-3\n",
+ "D=2.4*10**-3\n",
+ "T2=100.0\n",
+ "\n",
+ "#Calculations\n",
+ "Pd=Pd25-D*(T2-25)\n",
+ "Vb1b1=math.sqrt(Rbb*Pd)\n",
+ "\n",
+ "#Results\n",
+ "print(\"Maximum Vb1b1 that should be used at a temp 100 is %3.1fV \" %Vb1b1)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Maximum Vb1b1 that should be used at a temp 100 is 26.8V \n"
+ ]
+ }
+ ],
+ "prompt_number": 21
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 20.8 Page No 931"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math \n",
+ "\n",
+ "#initialisation of variables\n",
+ "Vb1b1=25\n",
+ "nmax=0.86\n",
+ "nmin=0.74\n",
+ "Vd=0.7\n",
+ "\n",
+ "#Calculations\n",
+ "Vpmax=Vd+(nmax*Vb1b1)\n",
+ "Vpmin=Vd+(nmin*Vb1b1)\n",
+ "\n",
+ "#Results\n",
+ "print(\"Maximum Vpmax that should be is %3.1fV \" %Vpmax)\n",
+ "print(\"Minimum Vpmin that should be is %3.1fV \" %Vpmin)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Maximum Vpmax that should be is 22.2V \n",
+ "Minimum Vpmin that should be is 19.2V \n"
+ ]
+ }
+ ],
+ "prompt_number": 22
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 20.9 Page No 933"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "Ip=.6*10**-6\n",
+ "Iv=2*10**-3\n",
+ "Veb1=2.5\n",
+ "Vpmin=19.2\n",
+ "Vpmax=22.2\n",
+ "Vbb=25.0\n",
+ "C=1*10**-6\n",
+ "R=18*10**3\n",
+ "Vp=20.0\n",
+ "\n",
+ "\n",
+ "#Calculations\n",
+ "Vpmin=(Vbb-Vpmax)/Ip\n",
+ "Remax=(Vbb-Veb1)/Iv\n",
+ "t=C*R*math.log((Vbb-Veb1)/(Vbb-Vp))\n",
+ "f=1.0/t\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of f is %.2f \" %f)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of f is 36.94 \n"
+ ]
+ }
+ ],
+ "prompt_number": 23
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
\ No newline at end of file
--
cgit