{ "metadata": { "name": "", "signature": "sha256:80346364d9467878bde7610e6e58f2864052653b0338be581053adfe2d70b16b" }, "nbformat": 3, "nbformat_minor": 0, "worksheets": [ { "cells": [ { "cell_type": "heading", "level": 1, "metadata": {}, "source": [ "Chapter5: Non-Linear Applications of IC OP-AMPs" ] }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex5.1:pg-283" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.1\n", "\n", "\n", "R1=100.0;#kohm\n", "R2=86.0;#kohm\n", "Vsat=15.0;#V\n", "VUT=R2/(R1+R2)*Vsat;#V\n", "VLT=R2/(R1+R2)*-Vsat;#V\n", "print round(VUT,2),\"=VUT(V) \"\n", "print round(VLT,2),\"=VLT(V) \"\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "6.94 =VUT(V) \n", "-6.94 =VLT(V) \n" ] } ], "prompt_number": 6 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex5.2:pg-283" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.2\n", "\n", "Rf=100;#kohm\n", "C=0.1;#micro F\n", "T=2*Rf*1000*C*10**-6;#s\n", "print T*10**3,\"Time period(ms)\"\n", "f=1/T;#Hz\n", "print f,\"Frequency(Hz) \"\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "20.0 Time period(ms)\n", "50.0 Frequency(Hz) \n" ] } ], "prompt_number": 8 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex5.3:pg-287" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.3\n", "\n", "R=100.0;#kohm\n", "C=0.01;#micro F\n", "f=1/(2*R*10**3*C*10**-6);#Hz\n", "print f,\"Frequency(Hz) \"\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "500.0 Frequency(Hz) \n" ] } ], "prompt_number": 10 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex5.4:pg-287" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.4\n", "\n", "f=1*1000.0;#HZ\n", "Vs=15.0;#V\n", "C=0.1;#micro F(Assumed)\n", "R=1.0/(2*f*C*10**-6);#Hz\n", "print \"For the required design value of R(kohm) \",R/1000.0\n", "print \"R1 & R2 can be choosen as 10 kohm\"\n", "#/Answer in the book is wrong\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "For the required design value of R(kohm) 5.0\n", "R1 & R2 can be choosen as 10 kohm\n" ] } ], "prompt_number": 13 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex5.5:pg-293" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.5\n", "\n", "Vo=0.7;#V\n", "Vsat=12.0;#V\n", "R1=10.0;#kohm\n", "R2=60.0;#kohm\n", "Vth=R1/(R1+R2)*Vo;#V\n", "iDmax=(Vsat-Vo)/R1-Vo/(R1+R2);#mA\n", "print iDmax,\": Maximum current(mA) \"\n", "\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "1.12 : Maximum current(mA) \n" ] } ], "prompt_number": 15 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex5.7:pg-294" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.7\n", "\n", "\n", "R1=10.0;#kohm\n", "R2=16.0;#kohm\n", "C=10.0;#nF\n", "R=62.0;#kohm\n", "Beta=R1/(R1+R2);#unitless\n", "T=2*R*1000.0*C*10**-9*math.log((1+Beta)/(1-Beta));#seconds\n", "f=1.0/T;#Hz\n", "print round(f,1),\": Frequency of oscillations(Hz) \"\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "994.5 : Frequency of oscillations(Hz) \n" ] } ], "prompt_number": 17 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex:5.8:pg-295" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.8\n", "\n", "\n", "#vo/v1=1+R2/R1;#\n", "#For v2/v1 i.e. gain=2, R1 & R2 should be equal\n", "Vpp=10.0;#V\n", "R1=10.0;#kohm\n", "R2=10.0;#kohm\n", "#Avg=1/T*integrate('Vpp*math.sin(2*%pi*t/T)','t',0,T/2);\n", "Avg=-Vpp/(2*math.pi)*(math.cos(math.pi)-math.cos(0));\n", "print round(Avg,2),\": Average output voltage(V) \"\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "3.18 : Average output voltage(V) \n" ] } ], "prompt_number": 24 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex5.9:pg-296" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.9\n", "\n", "\n", "#vo/v1=-2;#Gain for -ve inputs\n", "voBYvi=-2;#Gain for -ve inputs\n", "#vo/v1=0;#Gain for non -ve inputs\n", "Rin=100;#kohm\n", "R1=100;#kohm(R1=Rin)\n", "R2=-R1*voBYvi;#kohm\n", "print R1,\"and\",R2,\"are Values of R1 & R2(kohm) \"\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "100 and 200 are Values of R1 & R2(kohm) \n" ] } ], "prompt_number": 27 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex5.11:pg-298" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.11\n", "\n", "\n", "f0=1.5;#kHz\n", "Vopp=6;#V\n", "Vsat=13.5;#V\n", "#Let R2=10kohm\n", "R2=10;#kohm\n", "R3=R2*2*Vsat/Vopp;#kohm\n", "#Let C1=0.05 micro F\n", "C1=0.05;#micro F\n", "R1=R3/(4*f0*1000*R2*1000*C1*10**-6);#kohm\n", "print R1,\",\",R2,\",\",R3,\"are Values of R1, R2 & R3(kohm) \"\n", "print C1,\": Value of C1(micro F)\"\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "15.0 , 10 , 45.0 are Values of R1, R2 & R3(kohm) \n", "0.05 : Value of C1(micro F)\n" ] } ], "prompt_number": 29 }, { "cell_type": "heading", "level": 2, "metadata": {}, "source": [ "Ex5.12:pg-299" ] }, { "cell_type": "code", "collapsed": false, "input": [ "#Ex 5.12\n", "\n", "\n", "tau=1;#ms\n", "#R1/R2=1.8:9;given range\n", "#Let R1/R2=1.8\n", "R1BYR2=1.8;#ratio\n", "Beta1=1.0/(R1BYR2+1);\n", "R1BYR2=9.0;#ratio\n", "Beta2=1.0/(R1BYR2+1);#unitless\n", "#For fmin\n", "Tmax=2.0*math.log((1+Beta1)/(1-Beta1));#ms\n", "fmin=1000.0/Tmax;#Hz\n", "#For fmax\n", "Tmin=2*math.log((1+Beta2)/(1-Beta2));#ms\n", "fmax=1/Tmin;#kHz\n", "print \"Frequency range is \",round(fmin),\" Hz to \",round(fmax,1),\" kHz\"\n" ], "language": "python", "metadata": {}, "outputs": [ { "output_type": "stream", "stream": "stdout", "text": [ "Frequency range is 669.0 Hz to 2.5 kHz\n" ] } ], "prompt_number": 34 } ], "metadata": {} } ] }