diff options
Diffstat (limited to 'Electronic_Devices_by_K._C._Nandi/Chapter_04.ipynb')
| -rw-r--r-- | Electronic_Devices_by_K._C._Nandi/Chapter_04.ipynb | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/Electronic_Devices_by_K._C._Nandi/Chapter_04.ipynb b/Electronic_Devices_by_K._C._Nandi/Chapter_04.ipynb new file mode 100644 index 00000000..1742be0d --- /dev/null +++ b/Electronic_Devices_by_K._C._Nandi/Chapter_04.ipynb @@ -0,0 +1,209 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:4d99941a24dd4b52b28be86bfd9badb4433db857a4af90f4e45a050680719b41" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter : 4 - Junction (Contd.)" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.12.1 - Page No : 4-46" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from __future__ import division\n", + "from numpy import pi\n", + "# Given data\n", + "q = 1.6 * 10**-19 # in C\n", + "N_D = 10**15 # in electrons/cm**3\n", + "N_D = N_D * 10**6 # in electrons/m**3\n", + "epsilon_r = 12 \n", + "epsilon_o = (36 * pi * 10**9)**-1 \n", + "epsilon = epsilon_o * epsilon_r \n", + "a = 3 * 10**-4 # in cm\n", + "a = a * 10**-2 # in m\n", + "V_P = (q * N_D * a**2)/( 2 * epsilon) # in V\n", + "print \"The Pinch off voltage = %0.1f V \" %V_P\n", + "# V_GS = V_P * (1-(b/a))**2\n", + "b = (1-0.707) *a # in m\n", + "print \"The value of b = %0.3f \u00b5m \" %(b*10**6)\n", + "print \"Hence the channel width has been reduced to about one third of its value for V_GS = 0\"\n", + "# Note : The unit of b in the book is wrong since the value of b is calculated in \u00b5m." + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The Pinch off voltage = 6.8 V \n", + "The value of b = 0.879 \u00b5m \n", + "Hence the channel width has been reduced to about one third of its value for V_GS = 0\n" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example : 4.12.2 - Page No : 4-47" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from math import sqrt\n", + "# Given data\n", + "I_DSS = 8 # in mA\n", + "V_P = -4 # in V\n", + "I_D = 3 # in mA\n", + "V_GS = V_P * (1 - sqrt(I_D/I_DSS)) # in V\n", + "print \"The value of V_GS = %0.2f V \" %V_GS\n", + "V_DS = V_GS - V_P # in V\n", + "print \"The value of V_DS = %0.2f V \" %V_DS" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The value of V_GS = -1.55 V \n", + "The value of V_DS = 2.45 V \n" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example : 4.12.3 - Page No : 4-47" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "# Given data\n", + "V_P = -4 # in V\n", + "I_DSS = 9 # in mA\n", + "I_DSS = I_DSS * 10**-3 # in A\n", + "V_GS = -2 # in V\n", + "I_D = I_DSS * ((1 - (V_GS/V_P))**2) # in A\n", + "print \"The drain current = %0.2f mA \" %(I_D*10**3)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The drain current = 2.25 mA \n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example : 4.12.4 - Page No : 4-47" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "# Given data\n", + "I_DSS = 12 # in mA\n", + "I_DSS = I_DSS * 10**-3 # in A\n", + "V_P = -(6) # in V\n", + "V_GS = -(1) # in V\n", + "g_mo = (-2 * I_DSS)/V_P # in A/V\n", + "g_m = g_mo * (1 - (V_GS/V_P)) # in S\n", + "print \"The value of transconductance = %0.2f mS \" %(g_m*10**3)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The value of transconductance = 3.33 mS \n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.12.5 - Page No : 4-48" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "# Given data\n", + "I_DSS = 10 # in mA \n", + "I_DSS = I_DSS * 10**-3 # in A\n", + "V_P = -(5) # in V\n", + "V_GS = -(2.5) # in V\n", + "g_m = ((-2 * I_DSS)/V_P) * (1 -(V_GS/V_P)) # in S\n", + "g_m = g_m * 10**3 # in mS\n", + "print \"The Transconductance = %0.f mS \" %g_m\n", + "I_D = I_DSS * ((1 - (V_GS/V_P))**2) # in A\n", + "print \"The drain current = %0.1f mA \" %(I_D*10**3)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The Transconductance = 2 mS \n", + "The drain current = 2.5 mA \n" + ] + } + ], + "prompt_number": 8 + } + ], + "metadata": {} + } + ] +}
\ No newline at end of file |