path: root/Electronic_Devices_And_Circuits/EDC_ch_6.ipynb

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  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": [
      "Chapter 6: Field Effect Transistors and MOSFETs"
     ]
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 6.1, Page No.219"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Value of Transconductance\n",
      "import math\n",
      "#variable declaration\n",
      "VGS1=-3.1                        #in Volt\n",
      "VGS2=-3                          #in Volt\n",
      "ID1=1                            #in mA\n",
      "ID2=1.3                          #in mA\n",
      "\n",
      "#calculations\n",
      "delVGS=VGS2-VGS1                 #in Volts\n",
      "delID=ID2-ID1                    #in mA\n",
      "gm=delID*10**-3/delVGS           #in mhos\n",
      "\n",
      "#Result\n",
      "print(\"Transconductance in mhos : %.3f\"%gm)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Transconductance in mhos : 0.003\n"
       ]
      }
     ],
     "prompt_number": 8
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 6.2, Page No.219"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#AC drain resistance transconductance and amplification factor\n",
      "import math\n",
      "#variable declaration\n",
      "VGS1=0                       #in Volt\n",
      "VGS2=0                       #in Volt\n",
      "VGS3=-0.2                    #in Volt\n",
      "VDS1=7                       #in Volt\n",
      "VDS2=15                      #in Volt\n",
      "VDS3=15                      #in Volt\n",
      "ID1=10                       #in mA\n",
      "ID2=10.25                    #in mA\n",
      "ID3=9.65                     #in mA\n",
      "\n",
      "#Calculations\n",
      "delVDS=VDS2-VDS1             #in Volts\n",
      "delID=ID2-ID1                #in mA\n",
      "rd=delVDS/delID              #in Kohm\n",
      "delVGS=VGS3-VGS2             #in Volts\n",
      "delID=ID3-ID2                #in mA\n",
      "gm=delID*10**-3/delVGS       #in mhos\n",
      "mu=rd*10**3*gm               #unitless\n",
      "\n",
      "\n",
      "#Result \n",
      "print(\"AC drain resistance in Kohm : %.0f\"%rd)\n",
      "print(\"Transconductance in mhos : %.3f\"%gm)\n",
      "print(\"Amplification factor : %.0f\"%mu)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "AC drain resistance in Kohm : 32\n",
        "Transconductance in mhos : 0.003\n",
        "Amplification factor : 96\n"
       ]
      }
     ],
     "prompt_number": 9
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 6.5, Pae No.224"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Voltage Amplification\n",
      "import math\n",
      "#variable declaration\n",
      "gm=2                          #in milli-mho\n",
      "RL=10                         #in Kohm\n",
      "\n",
      "#calculation\n",
      "Av=gm*10**-3*RL*10**3         #unitless\n",
      "\n",
      "#Result\n",
      "print(\"assuming rd>>RL\")\n",
      "print(\"Voltage amplification : %.0f\"%Av)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "assuming rd>>RL\n",
        "Voltage amplification : 20\n"
       ]
      }
     ],
     "prompt_number": 10
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 6.6, Page No.224"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Output voltage of amplifier\n",
      "import math\n",
      "\n",
      "#Variable declaration\n",
      "RL=20.0                   #in Kohm\n",
      "RS=1.0                    #in Kohm\n",
      "RG=1.0                    #in Mohm\n",
      "Cs=25.0*10**-6            #in uF\n",
      "mu=20.0                   #unitless\n",
      "rd=100.0                  #in Kohm\n",
      "Vs=2.0                    #in Volt\n",
      "f=1.0*10**3               #in KHz\n",
      "\n",
      "#Calculations\n",
      "Xc=1/(2*math.pi*f*Cs)   #in Ohm\n",
      "Av=mu*RL/(rd+RL)        #unitless\n",
      "Vo=Av*Vs                #in Volt\n",
      "\n",
      "#Result\n",
      "print(\"Xc in Ohm : %.1f\"%(math.floor(Xc*10)/10))\n",
      "print(\"As Xc<<Rs, therefore Cs bypasses all ac components. \")\n",
      "print(\"Output voltage in volt : %.2f\"%Vo)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Xc in Ohm : 6.3\n",
        "As Xc<<Rs, therefore Cs bypasses all ac components. \n",
        "Output voltage in volt : 6.67\n"
       ]
      }
     ],
     "prompt_number": 11
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 6.7, Page No.224"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#IDQ VGSQ VD VS VDS VDG\n",
      "import math\n",
      "#variable declaration\n",
      "R1=2.1                              #in Mohm\n",
      "R2=270                              #in Kohm\n",
      "RD=4.7                              #in Kohm\n",
      "RS=1.5                              #in Kohm\n",
      "VDD=20                              #in Volt\n",
      "VP=-4                               #in Volt\n",
      "IDSS=8                              #in mA\n",
      "\n",
      "#Calculations\n",
      "\n",
      "#step 1 : Find VGS :\n",
      "VG=R2*10**3*VDD/(R1*10**6+R2*10**3) \n",
      "print(\"step 1\\nVS=ID*RS-VGS Volt\")\n",
      "print(\"VGS=VG-VS=2.28-1.5*ID\")\n",
      "\n",
      "#step 2 : Find ID :\n",
      "print(\"\\nstep 2\\nID=IDSS*[1-VGS/VP]^2 mA\")\n",
      "print(\"ID=8*[1-(2.28-1.5*ID)/4]^2 mA\")\n",
      "print(\"2*ID=39.44-18.84*ID+2.25*ID^2\")\n",
      "print(\"2.25*ID^2-20.84*ID39.44=0\")\n",
      "print(\"ID=6.6mA or 2.65mA\")\n",
      "print(\"For ID =6.6mA VDS=-ve\")\n",
      "print(\"So discard the value so IDQ = 2.65mA.\")\n",
      "ID=2.65                                     #in mA\n",
      "#step 3 : Find VGSQ :\n",
      "IDQ=ID                                      #in mA\n",
      "VGS=2.28                                    #in Volt\n",
      "VGSQ=VGS-1.5*IDQ                            #in Volt\n",
      "\n",
      "#step 4 : Find VDSQ :\n",
      "VDSQ=VDD-IDQ*(RD+RS)#in Volt\n",
      "\n",
      "#step 5 : Find VD,VS and VDG :\n",
      "VDS=VDSQ                                    #in Volt\n",
      "VG=VGS                                      #in Volt\n",
      "VS=ID*RS                                    #in Volt\n",
      "VD=VS+VDS                                   #in Volt\n",
      "VDG=VD-VG                                   #in Volt\n",
      "print(\"IDQ in mA : %.3f\"%IDQ)\n",
      "print(\"\\nstep 3\\nVGSQ in Volt :%.3f\"%VGSQ)\n",
      "print(\"VD in Volt :%.3f\"%VD)\n",
      "print(\"VS in Volt :%.3f\"%VS)\n",
      "print(\"\\nstep 4\\nVDS in Volt :%.2f\"%VDS)\n",
      "print(\"\\nstep 5\\nVDG in Volt :%.3f\"%VDG)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "step 1\n",
        "VS=ID*RS-VGS Volt\n",
        "VGS=VG-VS=2.28-1.5*ID\n",
        "\n",
        "step 2\n",
        "ID=IDSS*[1-VGS/VP]^2 mA\n",
        "ID=8*[1-(2.28-1.5*ID)/4]^2 mA\n",
        "2*ID=39.44-18.84*ID+2.25*ID^2\n",
        "2.25*ID^2-20.84*ID39.44=0\n",
        "ID=6.6mA or 2.65mA\n",
        "For ID =6.6mA VDS=-ve\n",
        "So discard the value so IDQ = 2.65mA.\n",
        "IDQ in mA : 2.650\n",
        "\n",
        "step 3\n",
        "VGSQ in Volt :-1.695\n",
        "VD in Volt :7.545\n",
        "VS in Volt :3.975\n",
        "\n",
        "step 4\n",
        "VDS in Volt :3.57\n",
        "\n",
        "step 5\n",
        "VDG in Volt :5.265\n"
       ]
      }
     ],
     "prompt_number": 17
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 6.8, page no.226"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Pinch off voltage\n",
      "import math\n",
      "#variable declaration\n",
      "a=5.6*10**-6/2                     #in meter\n",
      "k=12                               #unitless\n",
      "epsilon_o=8.86*10**-12             #in F/m\n",
      "epsilon=k*epsilon_o                #in F/m\n",
      "ND=10**15                          #in cm^-3\n",
      "ND=10**15*10**6                    #in m^-3\n",
      "e=1.6*10**-19                      #in Coulamb\n",
      "\n",
      "#Calculationd\n",
      "VP=e*ND*a**2/(2*epsilon)           #in Volt\n",
      "\n",
      "#Result\n",
      "print(\"Pinch off voltage in volts : %.2f\"%VP)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Pinch off voltage in volts : 5.90\n"
       ]
      }
     ],
     "prompt_number": 14
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 6.10, Page No.226"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Plot gm VS IDSS\n",
      "import math\n",
      "#Variable declaration\n",
      "print(\"We have,\\nID=IDSS*[1-VGS/VP]^2\\n\")\n",
      "print(\"Mutual conductance, gm = (delID/delVGS)\\n\\t\\t       = IDSS*2*[1-VGS/VP]*(-1/VP)\\n\\t\\t       = (-2*IDSS/VP)*[1-VGS/VP]\");\n",
      "################------------PLOT------------#############\n",
      "t = arange(0.0001,3 , 0.0005)\n",
      "t2 = arange(0.0001,8.0/3.0 , 0.0005)\n",
      "a=arange(0.001,8,0.0005)\n",
      "x=(8.0*a/3.0)/a\n",
      "plot(t2,8*t2/t2,'b')\n",
      "plot(x,a,'b')\n",
      "plot(t,(3*t),'--')\n",
      "text(1.2,8.2,'gm')\n",
      "text(8.0/3.1,8.2,'Vgs = 0')\n",
      "text(8.0/4,4.1,'tan(theta) =1/3')\n",
      "xlabel('gm(in mS)')\n",
      "ylabel('IDSS(in mA)')\n",
      "title('gm versus IDSS')\n",
      "#########---------------------------------------##########\n",
      "\n",
      "print(\"\\nClearly the plot of gm vs IDSS for VD=-6V, IDSS=8mA is a straight line of slope=-2/VP=-(2/-6)=1/3\")"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "We have,\n",
        "ID=IDSS*[1-VGS/VP]^2\n",
        "\n",
        "Mutual conductance, gm = (delID/delVGS)\n",
        "\t\t       = IDSS*2*[1-VGS/VP]*(-1/VP)\n",
        "\t\t       = (-2*IDSS/VP)*[1-VGS/VP]\n",
        "\n",
        "Clearly the plot of gm vs IDSS for VD=-6V, IDSS=8mA is a straight line of slope=-2/VP=-(2/-6)=1/3"
       ]
      },
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "\n"
       ]
      },
      {
       "metadata": {},
       "output_type": "display_data",
       "png": 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LrcDRR5MmTdCzZ08EBARg9uzZGDduHI4fP44uXbpg7dq18PX11W77eIet7HWv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\n8Msvv6B9+/ZwdHTEqlWrxA6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       "text": [
        "<matplotlib.figure.Figure at 0x8656ba8>"
       ]
      }
     ],
     "prompt_number": 15
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "example 6.11, Page No.234"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#Channel width W\n",
      "import math\n",
      "#variable declaration\n",
      "L=1.25                   #in um\n",
      "mu_n=0.065               #in m^2/V-s\n",
      "Cox=6.9*10**-4           #in F/m^2\n",
      "VT=0.65                  #in Volt\n",
      "ID_sat=4                 #in mA\n",
      "VGS=5                    #in Volt\n",
      "\n",
      "#calculations\n",
      "\n",
      "#Formula : ID_sat=W*mu_n*Cox*(VGS-VT)^2/(2*L)\n",
      "W=ID_sat*10**-3*2*L*10**-6/(mu_n*Cox*(VGS-VT)**2)\n",
      "\n",
      "#Result\n",
      "print(\"Channel Width in micro meter :%.1f\"%(W*10**6))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Channel Width in micro meter :11.8\n"
       ]
      }
     ],
     "prompt_number": 16
    }
   ],
   "metadata": {}
  }
 ]
}