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authorTrupti Kini2015-12-28 23:30:07 +0600
committerTrupti Kini2015-12-28 23:30:07 +0600
commitbb0e389dff459a56b491a1262aecccb294a13f99 (patch)
treec3128096f8784d513a9cde2eedac6b2a9d0ec4e9 /sample_notebooks
parent0d987a30c497f43033896ea328e1908df350ee92 (diff)
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A sample_notebooks/AmitSexana/Ch_7.ipynb
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+{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h1> Chapter No 7 : Field Effect Transistor <h1>"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.1, Page No 323"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#initialisation of variables\n",
+ "I_DSS = 15.0 #in mA\n",
+ "V_GS_off = -5.0 #in V\n",
+ "V_GS = 0 #in V\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "I_D = I_DSS*((1-(V_GS/V_GS_off))**2) #in mA\n",
+ "V_GS = -1 #in V\n",
+ "I_D1 = I_DSS*((1.0-(V_GS/V_GS_off))**2) #in mA\n",
+ "V_GS = -4 #in V\n",
+ "I_D2 = I_DSS*((1-(V_GS/V_GS_off))**2) #in mA\n",
+ "\n",
+ "#RESULTS\n",
+ "print('When V_GS=0, the drain current is =%.f mA ' %I_D)\n",
+ "print('When V_GS=-1V, the drain current is =%.2f mA ' %I_D1)\n",
+ "print('The interplanner spacing is =%.2f \u00c5' %I_D2)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "When V_GS=0, the drain current is =15 mA \n",
+ "When V_GS=-1V, the drain current is =9.60 mA \n",
+ "The interplanner spacing is =0.60 \u00c5\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.4, Page No 327"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "I_DSS = 20.0 #in mA\n",
+ "V_P = -8 #in V\n",
+ "g_mo = 5000.0 #in \u00b5s\n",
+ "V_GS = -4.0 #in V\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "\n",
+ "I_D = I_DSS*((1-(V_GS/V_P))**2) #in mA\n",
+ "g_m = g_mo*(1-(V_GS/V_P)) #in \u00b5s\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The value of drain current is =%.f mA ' %I_D)\n",
+ "print('The transconductance is =%.f \u00b5s' %g_m)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of drain current is =5 mA \n",
+ "The transconductance is =2500 \u00b5s\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.5 Page No 327"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "\n",
+ "\n",
+ "#initialisation of variables\n",
+ "I_D1 = 10.0 #in mA\n",
+ "V_GS = -12.0 #in V\n",
+ "V_GSth = -3.0 #in V\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "K = I_D1/( (V_GS-V_GSth)**2 ) #in mA/V\n",
+ "V_GS= -6 #in V\n",
+ "I_D = K*((V_GS-V_GSth)**2) #in mA\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The value of I_D is =%.2f mA ' %I_D)\n",
+ "print('Approximation error')"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of I_D is =1.11 mA \n",
+ "Approximation error\n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.7, Page No 327"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "V_GS = -2.0 #in V\n",
+ "V_P = -5.0 #in V\n",
+ "V_DS = V_GS-V_P #in V\n",
+ "I_DSS = 8.0 #in mA\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "I_D = I_DSS*((1-(V_GS/V_P))**2) #in mA\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The minimum value of V_DS is =%.f V ' %V_DS)\n",
+ "print('The drain current is =%.2f mA' %I_D)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The minimum value of V_DS is =3 V \n",
+ "The drain current is =2.88 mA\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.8 Page No 328"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "V_P = -2 #in V\n",
+ "I_DSS = 1.65 #in mA\n",
+ "I_D = 0.8 #in mA\n",
+ "V_DD = 24.0 #in V\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "V_GS = V_P*(1- math.sqrt(I_D/I_DSS) ) #in V\n",
+ "g_mo = -(2*I_DSS)/V_P #in mS\n",
+ "g_m = g_mo*(1-(V_GS/V_P)) #in mS\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The value of V_GS is =%.2f V ' %V_GS)\n",
+ "print('The value of g_m is =%.2f mS' %g_m)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of V_GS is =-0.61 V \n",
+ "The value of g_m is =1.15 mS\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.9 Page No 328"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "V_P = 5.0 #in V\n",
+ "I_DSS = -40.0 #in mA\n",
+ "I_D = -15.0 #in mA\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "V_GS = V_P*(math.sqrt(I_D/I_DSS)-1 ) #in V\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The gate source voltage is =%.2f V' %(V_GS*-1))\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The gate source voltage is =1.94 V\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.10, Page No 328"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "I_D1 = 1.9 #in mA\n",
+ "I_D2 = 1.0 #in mA\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "del_I_D = I_D1-I_D2 #in mA\n",
+ "V_GS2 = -3.3 #in V\n",
+ "V_GS1 = -3.0 #in V\n",
+ "del_V_GS = V_GS1-V_GS2 #in V\n",
+ "g_m = del_I_D/del_V_GS #in mA/V\n",
+ "g_m = g_m * 10**3 #in \u00b5 mhos\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The value of transconductance is =%.f \u00b5 mhos ' %g_m)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of transconductance is =3000 \u00b5 mhos \n"
+ ]
+ }
+ ],
+ "prompt_number": 8
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.11 Page No 329"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math \n",
+ "\n",
+ "#initialisation of variables\n",
+ "V_DS1 = 14.0 #in V\n",
+ "V_DS2 = 5.0 #in V\n",
+ "del_V_DS = V_DS1-V_DS2 # in V\n",
+ "I_D1 = 3.3 #in mA\n",
+ "I_D2 = 3 # in mA\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "del_I_D = I_D1-I_D2 #in mA\n",
+ "r_d = del_V_DS/del_I_D #in k ohms\n",
+ "print('The drain resistance is =%.f k ohms' %r_d)\n",
+ "V_GS1 = 0.4 #in V\n",
+ "V_GS2 = 0.1 #in V\n",
+ "del_V_GS = V_GS1-V_GS2 #in V\n",
+ "I_D1 = 3.3 #in mA\n",
+ "I_D2 = 0.71 #in mA\n",
+ "del_I_D = I_D1-I_D2 # in mA\n",
+ "g_m = del_I_D/del_V_GS # in mA/V\n",
+ "g_m = g_m * 10**3 # in \u00b5mhos\n",
+ "\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The transconductance is =%.f \u00b5mhos ' %g_m)\n",
+ "Miu =r_d*10**3*g_m*10**-6\n",
+ "print('Amplification factor is =%.f ' %Miu)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The drain resistance is =30 k ohms\n",
+ "The transconductance is =8633 \u00b5mhos \n",
+ "Amplification factor is =259 \n"
+ ]
+ }
+ ],
+ "prompt_number": 9
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.12 Page No 334"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "q = 1.6*10**-19 #in C\n",
+ "N_D = 10**15*10**6 #electrons/m^3\n",
+ "a = 3*10**-4 #in cm\n",
+ "a=a*10**-2 #in m\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "Epsilon_o = (36 * math.pi * 10**9)**-1\n",
+ "Epsilon = 12*Epsilon_o\n",
+ "V_P = (q*N_D*((a)**2))/(2*Epsilon) #in V\n",
+ "print('Pinch off voltage is =%.2f V ' %V_P)\n",
+ "V_GS = 1.0 #in V\n",
+ "V_P = 2.0 #in V\n",
+ "b = a*( 1-math.sqrt(V_GS/V_P) ) #in m\n",
+ "b = b * 10**6 #in \u00b5m\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The channel half width is =%.2f \u00b5m' %b)\n",
+ "# Note: In the book, the unit of channel half width is wrong."
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Pinch off voltage is =6.79 V \n",
+ "The channel half width is =0.88 \u00b5m\n"
+ ]
+ }
+ ],
+ "prompt_number": 10
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.13 Page No 335"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "I_DSS = 8.0 #in mA\n",
+ "V_P = -4.0 #in V\n",
+ "a = 3*10**-4 #in cm\n",
+ "N_D = 10**15 #in electrons/cm^3\n",
+ "I_D = 3.0 #in mA\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "V_GS = V_P*( 1-math.sqrt(I_D/I_DSS) ) #in V\n",
+ "V_DS_sat = V_GS-V_P #in V\n",
+ "\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The value of V_GS is =%.2f V' %V_GS)\n",
+ "print('The value of V_DS_sat is =%.2f V ' %V_DS_sat)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of V_GS is =-1.55 V\n",
+ "The value of V_DS_sat is =2.45 V \n"
+ ]
+ }
+ ],
+ "prompt_number": 11
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example No 7.14 Page No 335"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#initialisation of variables\n",
+ "V_P = -4 #in V\n",
+ "I_DSS = 9.0 #in mA\n",
+ "V_GS = -2.0 #in V\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "I_D = I_DSS*(( 1-(V_GS/V_P) )**2) #in mA\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The drain current is =%.2f mA ' %I_D)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The drain current is =2.25 mA \n"
+ ]
+ }
+ ],
+ "prompt_number": 12
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example No 7.15 Page No 335"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#initialisation of variables\n",
+ "I_DSS = 12.0 #in mA\n",
+ "V_P = -6.0 #in V\n",
+ "V_GS = -1.0 #in V\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "g_mo = (-2*I_DSS)/V_P #in mA/V\n",
+ "g_m = g_mo*(1-(V_GS/V_P)) #in mS\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The value of transconductance is =%.2f mS' %g_m)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of transconductance is =3.33 mS\n"
+ ]
+ }
+ ],
+ "prompt_number": 13
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example No 7.16 Page No 336"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#initialisation of variables\n",
+ "I_DSS = 10.0 #in mA\n",
+ "V_P = -5.0 #in V\n",
+ "V_GS = -2.5 #in V\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "g_m = ((-2*I_DSS)/V_P)*(1-(V_GS/V_P)) #in mS .... correction\n",
+ "I_D = I_DSS * ((1-(V_GS/V_P))**2) #in mA\n",
+ "\n",
+ "\n",
+ "#RESULTS\n",
+ "print('The transconductance is =%.f mS ' %g_m)\n",
+ "print('The drain current is =%.2f mA ' %I_D)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The transconductance is =2 mS \n",
+ "The drain current is =2.50 mA \n"
+ ]
+ }
+ ],
+ "prompt_number": 14
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
generated by cgit (git 2.34.1) at 2024-12-20 19:27:19 +0000