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diff --git a/Electronic_Devices_and_Circuits_by_J._Paul/Ch3_1.ipynb b/Electronic_Devices_and_Circuits_by_J._Paul/Ch3_1.ipynb new file mode 100644 index 00000000..3939306a --- /dev/null +++ b/Electronic_Devices_and_Circuits_by_J._Paul/Ch3_1.ipynb @@ -0,0 +1,261 @@ +{ + "cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "# Chapter 3 - Special Semiconductor Diodes " + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## PageNumber 138 example 1" + ] + }, + { + "cell_type": "code", + "execution_count": 1, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "resistance range from 196.00 to 217.78 ohms\n", + "resistance range at 50 from 146.00 to 167.78 ohms\n" + ] + } + ], + "source": [ + "#zener diode\n", + "voltag=5.2##volts\n", + "w=260*10**-3##watts\n", + "appv=15##voltsw1=50##watts\n", + "imax=w/voltag*0.1#\n", + "#to maitain a constant voltage\n", + "imax1=(w/voltag)-imax#\n", + "resmin=(appv-voltag)/(w/voltag)#\n", + "resmax=(appv-voltag)/imax1#\n", + "#load 50\n", + "resmax1=((9.8)/(45*10**-3))-50#\n", + "resmin1=((9.8)/(50*10**-3))-50#\n", + "res50=resmax1-resmin1#\n", + "print \"resistance range from %0.2f\"%(resmin),\" to %0.2f\"%(resmax),\"ohms\"\n", + "print \"resistance range at 50 from %0.2f\"%(resmin1),\" to %0.2f\"%(resmax1),\"ohms\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## PageNumber 139 example 2" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "voltage drop = 5.67volts\n" + ] + } + ], + "source": [ + "i1=20*10**-3##ampere\n", + "i=30*10**-3##ampere\n", + "v1=5.6##volts\n", + "v=5.65##volts\n", + "#condition\n", + "u=35*10**-3##ampere\n", + "voltag=5*u+5.5#\n", + "print \"voltage drop = %0.2f\"%(voltag)+\"volts\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## PageNumber 139 example 3 " + ] + }, + { + "cell_type": "code", + "execution_count": 3, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "fi0 = 4.96\n" + ] + } + ], + "source": [ + "from math import log\n", + "v=4.3##volt\n", + "q=4##volt\n", + "dop=10**17##per cubic centimetre\n", + "fi0=0.254*log(dop/(5.1*10**10))#\n", + "fi01=0.407+q+0.55#\n", + "print 'fi0 = %0.2f'%(fi01)" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## PageNumber 140example 4 " + ] + }, + { + "cell_type": "code", + "execution_count": 4, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "current = 9.95e-05 ampere\n", + "resistance = 1.61e+05 ohm\n", + "r1 = 1.60e+05 ohm\n", + "r2 = 4.02e+04 ohm\n" + ] + } + ], + "source": [ + "from __future__ import division\n", + "v1=20##volt\n", + "i1=((v1)/(200+1))*10**-3#\n", + "print 'current = %0.2e'%(i1),'ampere'\n", + "#greater than 20\n", + "vone=16#\n", + "r=vone/i1#\n", + "r1=r-1*10**3#\n", + "r11=200*10**3-r1#\n", + "print 'resistance = %0.2e'%(r),'ohm'\n", + "print \"r1 = %0.2e\"%((r1)),\"ohm\"\n", + "print \"r2 = %0.2e\"%((r11)),\"ohm\"" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## PageNumber 142 example 6 " + ] + }, + { + "cell_type": "code", + "execution_count": 5, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "maximum current = 0.035 ampere\n", + "v1 minimum = 262.50 volt\n", + "v1 maximum = 393.75 volt\n" + ] + } + ], + "source": [ + "v1=150##volt\n", + "vone=300#volt\n", + "idmax=40*10**-3##ampere\n", + "idmin=5*10**-3##ampere\n", + "r=(vone-v1)/idmax#\n", + "imax=idmax-idmin#\n", + "print 'maximum current = %0.3f'%(imax),'ampere'\n", + "#minimum\n", + "zq=1#\n", + "while (zq<=2):\n", + " if zq==1 :\n", + " ione=25*10**-3#\n", + " i1=ione+idmin#\n", + " vmin=(i1*r)+v1#\n", + " print 'v1 minimum = %0.2f'%(vmin),'volt'\n", + " else:\n", + " ione=25*10**-3#\n", + " i1=ione+idmax#\n", + " vmin=(i1*r)+v1#\n", + " print 'v1 maximum = %0.2f'%(vmin),'volt'\n", + " \n", + " \n", + " zq=zq+1#\n", + " " + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "## PageNumber 142 example 7" + ] + }, + { + "cell_type": "code", + "execution_count": 6, + "metadata": { + "collapsed": false + }, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "width = 2.22e-08 metre\n" + ] + } + ], + "source": [ + "from math import sqrt\n", + "q=4.5*10**22##atoms per cubic metre\n", + "na=q/(10**4)#\n", + "eo=0.026*24.16#\n", + "e=1.6*10**-19#\n", + "W=sqrt((4*16*0.628)/(36*3.14*10**9*na*10**6*e))#\n", + "print 'width = %0.2e'%(W),'metre'" + ] + } + ], + "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 +} |