From c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131 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/Chapter1_1.ipynb | 307 +++++++++++++++++++++++ 1 file changed, 307 insertions(+) create mode 100755 Electronic_Devices_and_Circuits/Chapter1_1.ipynb (limited to 'Electronic_Devices_and_Circuits/Chapter1_1.ipynb') diff --git a/Electronic_Devices_and_Circuits/Chapter1_1.ipynb b/Electronic_Devices_and_Circuits/Chapter1_1.ipynb new file mode 100755 index 00000000..47b8b5fc --- /dev/null +++ b/Electronic_Devices_and_Circuits/Chapter1_1.ipynb @@ -0,0 +1,307 @@ +{ + "metadata": { + "name": "" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 01 : Basic semiconductor and pn junction theory" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 1.1, Page No 15" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "Nd=3*10**14\n", + "Na=0.5*10**14 #all in atom/cm**3\n", + "ni=1.5*10**10\n", + "\n", + "#Calculations\n", + "print(\"resultant densities of free electrons and hole\")\n", + "ne=(-(Na-Nd)+(math.sqrt(((Na-Nd)**2)+4*ni**2)))/2\n", + "print(\"Electron densities = %.1f x 10^14 electron/cm**3\" %(ne/(10**14))) #electron densities in electron/cm**3\n", + "Nd>Na\n", + "n=Nd-Na\n", + "print(n)\n", + "p=(ni**2)/n\n", + "\n", + "#Results\n", + "\n", + "print(\"densities of hole is =%.1f X 10^6 dhole/cm3\" %(p/(10**6)))\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "resultant densities of free electrons and hole\n", + "Electron densities = 2.5 x 10^14 electron/cm**3\n", + "2.5e+14\n", + "densities of hole is =0.9 X 10^6 dhole/cm3\n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 1.2, Page No 18" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "\n", + "#initialisation of variables\n", + "l=1*10**-3\n", + "E=10\n", + "\n", + "#Calculations\n", + "un=1500*10**-4\n", + "up=500*10-4\n", + "Vn=-(un*E)/l\n", + "\n", + "#Results\n", + "print(\"drift current is =%.2dm/s\\n\" %Vn)\n", + "print(\"drift current of hole\")\n", + "Vp=(up*E)/l\n", + "print(\"drift current is =%.f dm/s\\n\" %(Vp/10**5))" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "drift current is =-1500m/s\n", + "\n", + "drift current of hole\n", + "drift current is =500 dm/s\n", + "\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 1.3 Page No 19" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "\n", + "#initialisation of variables\n", + "l=1*10**-3\n", + "a=0.1*10**-4\n", + "ni=1.5*10**10\n", + "p=1.5*10**10\n", + "un=1500\n", + "up=500 #in cm3/V.s\n", + "q=1.6*10**-19\n", + "\n", + "#Calculations\n", + "m=q*((ni*un)+(p*up))*10**6\n", + "print( \"mobility is =%.1fmicro/ohmcm\" %m)\n", + "R=l/(m*a)\n", + "print(\" resistance is =%.1fMohm\" %R)\n", + "\n", + "#for doped material\n", + "n=8*10**13\n", + "p=(ni**2)/n\n", + "m=q*((n*un)+(p*up))\n", + "\n", + "#Results\n", + "print(\"mobility is =%3.4f/ohmcm\" %m)\n", + "R=l/(m*a)\n", + "print(\" resistance is %.2f Kohm\" %(R/1000))" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "mobility is =4.8micro/ohmcm\n", + " resistance is =20.8Mohm\n", + "mobility is =0.0192/ohmcm\n", + " resistance is 5.21 Kohm\n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 1.4, Page No 25" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "T1=25.0\n", + "T2=35.0\n", + "T3=45.0\n", + "I0=30.0 # nA\n", + "print(\"I0(35)=I0*2**(T2-T1)/10\")\n", + "#on solving\n", + "I035=I0*2**((T2-T1)/10)\n", + "print(\"Current at 35c is =%.2f nA\\n\" %I035)\n", + "print(\"I0(45)=I0*2**(T3-T1)/10\")\n", + "#on solving\n", + "I045=30*2**2\n", + "print(\"current at 45c is =%.2f nA\\n\" %I045)\n", + "I_CS=100.0 \n", + "V_CC=200.0 \n", + "t_on=40*10**-6" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "I0(35)=I0*2**(T2-T1)/10\n", + "Current at 35c is =60.00 nA\n", + "\n", + "I0(45)=I0*2**(T3-T1)/10\n", + "current at 45c is =120.00 nA\n", + "\n" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 1.5, Page No 28" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "I0=30\n", + "Vd=0.7\n", + "n=2\n", + "\n", + "#Calculations\n", + "Vt=26.0*10**-3\n", + "k=Vd/(n*Vt)\n", + "Id=I0*((2.7**k)-1)*10**-6 #Junction current\n", + "print(\" a) Forward bais current is =%.2f mA\\n\" %Id)\n", + "Vd=-10 #reverse bais\n", + "k=Vd/(n*Vt)\n", + "Id=I0*((2.7**k)-1)\n", + "\n", + "#Results\n", + "print(\" b) Forward bais current is =%.2f nA\" %Id)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " a) Forward bais current is =19.23 mA\n", + "\n", + " b) Forward bais current is =-30.00 nA\n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 1.6, Page No 29" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "Id=.1*10**-3\n", + "n=2\n", + "vt=26*10**-3\n", + "I0=30*10**-9\n", + "\n", + "#Calculations\n", + "Vd=(n*Vt)*math.log(Id/I0)*10**3\n", + "print(\" a) Forward bais current is =%.2f mV\\n\" %Vd)\n", + "Id=10*10**-3\n", + "Vd=(n*Vt)*math.log(Id/I0)*10**3\n", + "\n", + "#Results\n", + "print(\"b) forward bais current is %dmV\\n\" %Vd)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " a) Forward bais current is =421.81 mV\n", + "\n", + "b) forward bais current is 661mV\n", + "\n" + ] + } + ], + "prompt_number": 6 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit