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+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Chapter 12 - Power Electronic devices "
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 553 example 1"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "source resistance = 111.87 ohm\n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import sqrt\n",
+ "slope1=130\n",
+ "trivol=15##volt\n",
+ "d=0.5##watts\n",
+ "ig=sqrt(d/slope1)\n",
+ "vg=slope1*ig\n",
+ "r=(trivol-vg)/ig\n",
+ "print \"source resistance = %0.2f\"%((r)),\"ohm\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 553 example 2"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "current = 0.010 ampere\n",
+ "input current less than required current\n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import exp\n",
+ "latcur=50*10**-3##ampere\n",
+ "durpul=50*10**-6##second\n",
+ "induct=0.5##henry\n",
+ "r=20##ohm\n",
+ "voltag=100##volt\n",
+ "w=induct/r\n",
+ "inpcur=-(voltag/r)*((1)-exp(-durpul/w))\n",
+ "print \"current = %0.3f\"%(abs(inpcur)),\"ampere\"\n",
+ "print \"input current less than required current\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 554 example 3"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "min duration = 4.00e-06 second\n"
+ ]
+ }
+ ],
+ "source": [
+ "latcur=4*10**-3##ampere\n",
+ "induct=0.1##henry\n",
+ "voltag=100##volt\n",
+ "durmin=induct*latcur/voltag\n",
+ "print \"min duration = %0.2e\"%((durmin)),\"second\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 554 example 4"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 4,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "source resistance = 2000.00 ohm\n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import sqrt\n",
+ "slope1=3*10**3\n",
+ "egs=10##volt\n",
+ "d=0.012##watts\n",
+ "ig=sqrt(d/slope1)\n",
+ "vg=slope1*ig\n",
+ "r=(egs-vg)/ig\n",
+ "\n",
+ "print \"source resistance = %0.2f\"%((r)),\"ohm\"##it is not given in the book"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 554 example 5"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 5,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "resistance = 14.00 ohm\n",
+ "frequency = 18750.00 hertz\n"
+ ]
+ }
+ ],
+ "source": [
+ "slope1=16\n",
+ "durmax=4*10**-6##second\n",
+ "curmin=500*10**-3##ampere\n",
+ "voltag=15##volt\n",
+ "#(1) resistance\n",
+ "vg=slope1*curmin\n",
+ "r=(voltag-vg)/curmin\n",
+ "#(2)\n",
+ "d=vg*curmin\n",
+ "freque=0.3/(d*durmax)\n",
+ "print \"resistance = %0.2f\"%((r)),\"ohm\"\n",
+ "print \"frequency = %0.2f\"%((freque)),\"hertz\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 555 example 6"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 6,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "change of voltage = 800.00 volt per microsecond\n"
+ ]
+ }
+ ],
+ "source": [
+ "c1=20*10**-12##farad\n",
+ "limcur=16*10**-3##ampere\n",
+ "w=(limcur/c1)*10**-6##convert second to microsecond\n",
+ "print \"change of voltage = %0.2f\"%((w)),\"volt per microsecond\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 555 example 7"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "current = 2121.32 ampere\n",
+ "current = 45000.00 ampere square second\n"
+ ]
+ }
+ ],
+ "source": [
+ "from math import sqrt\n",
+ "ratcur=3000##ampere\n",
+ "freque=50##hertz\n",
+ "i=sqrt(ratcur**2/2)\n",
+ "print \"current = %0.2f\"%((i)),\"ampere\"\n",
+ "i=((ratcur)/sqrt(2))**2/(2*freque)\n",
+ "print \"current = %0.2f\"%((i)),\"ampere square second\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 556 example 9"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 8,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "max limit resistance = 1410000.00 ohm\n",
+ "min limit resistance = 2650.00 ohm\n",
+ "resistance = 4.67e+04 ohm\n",
+ "rb1 = 100.00 ohm\n",
+ "rb2 = 653.59 ohm\n",
+ "peak voltage = 15.90 volt\n"
+ ]
+ }
+ ],
+ "source": [
+ "from __future__ import division\n",
+ "from math import log\n",
+ "voltag=30##volt\n",
+ "w=0.51\n",
+ "i1=10*10**-6##ampere\n",
+ "v1=3.5##volt\n",
+ "curen1=10*10**-3##ampere\n",
+ "freque=60##hertz\n",
+ "tridun=50*10**-6##second\n",
+ "pinvol=w*voltag+0.6\n",
+ "r=(voltag-pinvol)/i1\n",
+ "print \"max limit resistance = %0.2f\"%((r)),\"ohm\"\n",
+ "r=(voltag-v1)/(curen1)\n",
+ "print \"min limit resistance = %0.2f\"%((r)),\"ohm\"\n",
+ "capac1=0.5*10**-6##farad\n",
+ "r=(1/freque)*(1/(capac1*log(1/(1-w))))\n",
+ "print \"resistance = %0.2e\"%((r)),\"ohm\"\n",
+ "rb2=10**4/(w*voltag)\n",
+ "rb1=tridun/capac1\n",
+ "print \"rb1 = %0.2f\"%((rb1)),\"ohm\"\n",
+ "print \"rb2 = %0.2f\"%((rb2)),\"ohm\"\n",
+ "print \"peak voltage = %0.2f\"%((pinvol)),\"volt\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "## PageNumber 557 example 10"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 9,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "voltage = 7.00 volt\n",
+ "this voltage makes to off\n"
+ ]
+ }
+ ],
+ "source": [
+ "re=1*10**3##ohm\n",
+ "i1=5*10**-3##ampere\n",
+ "\n",
+ "voltag=re*i1+2\n",
+ "print \"voltage = %0.2f\"%((voltag)),\"volt\"\n",
+ "\n",
+ "\n",
+ "print \"this voltage makes to off\""
+ ]
+ }
+ ],
+ "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": "2.7.9"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
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