{
 "metadata": {
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 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": [
      "Chapter 1 : Operational Amplifiers"
     ]
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Exa 1.1 : page 11"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Given data\n",
      "G= -100.0 # Gain\n",
      "R1= 2.2 # in kohm\n",
      "R1=R1*10**3 # in ohm\n",
      "# Formula G=-Rf/R1\n",
      "Rf= -G*R1 # ohm\n",
      "Rf*= 10**-3 # kohm\n",
      "print \"The value of Rf is %d kohm\" %Rf"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "The value of Rf is 220 kohm\n"
       ]
      }
     ],
     "prompt_number": 5
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Exa 1.2 : page 11"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Given data\n",
      "Rf= 200 # in kohm\n",
      "R1= 2 # in kohm\n",
      "vin=2.5 # in mV\n",
      "vin=vin*10**-3 # in volt\n",
      "G= -Rf/R1 \n",
      "vo= G*vin # in V\n",
      "print \"The output voltage is %0.2f volt\" %vo"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "The output voltage is -0.25 volt\n"
       ]
      }
     ],
     "prompt_number": 8
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Exa 1.3 : page 12"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Given data\n",
      "G=-10.0 \n",
      "Ri= 100.0 # in kohm\n",
      "R1= Ri # in kohm\n",
      "R1=R1*10**3 # in ohm\n",
      "R1*= 10**-3 # kohm\n",
      "# Formula G=-R2/R1\n",
      "R2= R1*abs(G) # ohm\n",
      "R2*= 10**-3 # Mohm\n",
      "print \"Value of R1 is %0.2f kohm\" %R1\n",
      "print \"and value of R2 is %0.2f Mohm\" %R2"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Value of R1 is 100.00 kohm\n",
        "and value of R2 is 1.00 Mohm\n"
       ]
      }
     ],
     "prompt_number": 16
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Exa 1.4 : page 37"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Given data\n",
      "R1= 100.0 # in kohm\n",
      "R2= 500 # in kohm\n",
      "V1= 2.0 # in volt\n",
      "Vo= (1+R2/R1)*V1 # in volt\n",
      "print \"Output voltage for noninverting amplifier is %0.2f volt\" %Vo"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Output voltage for noninverting amplifier is 12.00 volt\n"
       ]
      }
     ],
     "prompt_number": 19
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Exa 1.5 : page 38"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Given data\n",
      "Rf= 1 # in Mohm\n",
      "Rf=Rf*10**6 #in ohm\n",
      "\n",
      "# Part(a)\n",
      "V1=1.0 #in volt\n",
      "V2=2.0 #in volt\n",
      "V3=3.0 #in volt\n",
      "R1= 500.0 # in kohm\n",
      "R1=R1*10**3 #in ohm\n",
      "R2= 1 # in Mohm\n",
      "R2=R2*10**6 #in ohm\n",
      "R3= 1.0 # in Mohm\n",
      "R3=R3*10**6 #in ohm\n",
      "Vo= -Rf*(V1/R1+V2/R2+V3/R3) # in volt\n",
      "print \"(a) Output voltage is %0.2f volt\" %Vo\n",
      "\n",
      "# Part(b)\n",
      "V1=-2.0 #in volt\n",
      "V2=3.0 #in volt\n",
      "V3=1.0 #in volt\n",
      "R1= 200.0 # in kohm\n",
      "R1=R1*10**3 #in ohm\n",
      "R2= 500.0 # in kohm\n",
      "R2=R2*10**3 #in ohm\n",
      "R3= 1.0 # in Mohm\n",
      "R3=R3*10**6 #in ohm\n",
      "Vo= -Rf*(V1/R1+V2/R2+V3/R3) # in volt\n",
      "print \"(b) Output voltage is %0.2f volt\" %Vo"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "(a) Output voltage is -7.00 volt\n",
        "(b) Output voltage is 3.00 volt\n"
       ]
      }
     ],
     "prompt_number": 22
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Exa 1.6 : page 38"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Given data\n",
      "print \"Minimum closed loop voltage gain for R2=0 and R1= 2 kohm is \"\n",
      "R2=0 \n",
      "R1=2.0 # in kohm\n",
      "R1=R1*10**3 # in ohm\n",
      "Av_min= (1+R2/R1)\n",
      "print Av_min\n",
      "\n",
      "print \"Maximum closed loop voltage gain for maximum value of R2=100 kohm and R1= 2 kohm is\"\n",
      "R2=100 # in kohm\n",
      "R1=2 # in kohm\n",
      "Av_max= (1+R2/R1)\n",
      "print Av_max "
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Minimum closed loop voltage gain for R2=0 and R1= 2 kohm is \n",
        "1.0\n",
        "Maximum closed loop voltage gain for maximum value of R2=100 kohm and R1= 2 kohm is\n",
        "51\n"
       ]
      }
     ],
     "prompt_number": 26
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Exa 1.7 : page 39"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "# Given data\n",
      "V1= 745 # in \u00b5V\n",
      "V2= 740 # in \u00b5V\n",
      "V1=V1*10**-6 # in volt\n",
      "V2=V2*10**-6 # in volt\n",
      "CMRR=80 # in dB\n",
      "Av=5*10**5 \n",
      "# (i)\n",
      "# CMRR in dB= 20*log(Ad/Ac)\n",
      "Ad=Av \n",
      "Ac= Ad/10**(CMRR/20) \n",
      "# (ii)\n",
      "Vo= Ad*(V1-V2)+Ac*(V1+V2)/2 \n",
      "print \"Output voltage is %0.2f volt\" %Vo"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Output voltage is 2.54 volt\n"
       ]
      }
     ],
     "prompt_number": 27
    }
   ],
   "metadata": {}
  }
 ]
}