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diff --git a/Electronic_Devices_and_Circuits_by_David_A._Bell/Chapter13.ipynb b/Electronic_Devices_and_Circuits_by_David_A._Bell/Chapter13.ipynb new file mode 100755 index 00000000..0a7d7550 --- /dev/null +++ b/Electronic_Devices_and_Circuits_by_David_A._Bell/Chapter13.ipynb @@ -0,0 +1,733 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 13 : Amplifier with negative feedback"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.1, Page No 547"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "Av=100000.0\n",
+ "B=1.0/100\n",
+ "print(\"when Av=100000\")\n",
+ "\n",
+ "#Calculations\n",
+ "Acl=Av/(1+Av*B)\n",
+ "print(\"when Av is 150000\")\n",
+ "Av=150000\n",
+ "Acl=Av/(1+Av*B)\n",
+ "\n",
+ "#Results\n",
+ "print(\"when Av is 50000\")\n",
+ "Av=50000\n",
+ "Acl=Av/(1+Av*B)\n",
+ "print('The value of Acl= %.2f ' %(Acl))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "when Av=100000\n",
+ "when Av is 150000\n",
+ "when Av is 50000\n",
+ "The value of Acl= 99.80 \n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.2, Page No 549"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "Rf2=560.0\n",
+ "Rf1=56.0*10**3\n",
+ "Av=100000.0\n",
+ "Zb=1.0*10**3\n",
+ "R1=68.0*10**3\n",
+ "R2=33.0*10**3\n",
+ "\n",
+ "#Calculations\n",
+ "B=Rf2/(Rf2+Rf1)\n",
+ "Zi=(1+Av*B)*Zb\n",
+ "Zin=(Zi*R1*R2)/(R1*R2+R1*Zi+R2*Zi)\n",
+ "\n",
+ "#Results\n",
+ "print(\"input impedance with negative feedback is %.2f ohm \" %(Zin/10**3))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "input impedance with negative feedback is 21.73 ohm \n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.3 Page No 552"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Zb=1.0*10**3\n",
+ "B=1.0/100\n",
+ "Av=5562.0\n",
+ "R1=68.0*10**3\n",
+ "R2=47.0*10**3\n",
+ "hoe=1.0/(50*10**3)\n",
+ "Rc=3.9*10**3\n",
+ "\n",
+ "#Calculations\n",
+ "Zi=(1+Av*B)*Zb\n",
+ "Zin=(R1*R2*Zi)/(R1*R2+R2*Zi+R1*Zi)\n",
+ "Zo=(1/hoe)/(1+Av*B)\n",
+ "Zout=(Rc*Zo)/(Rc+Zo)\n",
+ "\n",
+ "#Results\n",
+ "print(\" circuit output impedance is %.2f ohm \" %Zout)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " circuit output impedance is 720.04 ohm \n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.4, Page No 554"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Zb=1.0*10**3\n",
+ "hoe=1.0/(85*10**3)\n",
+ "Av=58000.0\n",
+ "Rf2=220.0\n",
+ "Rf1=16.2*10**3\n",
+ "R1=120.0*10**3\n",
+ "R2=39.0*10**3\n",
+ "R7=12.0*10**3\n",
+ "\n",
+ "#Calculations\n",
+ "B=Rf2/(Rf2+Rf1)\n",
+ "print(\"voltage gain\")\n",
+ "Acl=Av/(1+Av*B)\n",
+ "Zi=Zb*(1+Av*B)\n",
+ "Zin=(Zi*R1*R2)/(Zi*R1+R2*R1+R2*Zi)\n",
+ "Zo=(1/hoe)/(1+Av*B)\n",
+ "Zout=(R7*Zo)/(R7+Zo)\n",
+ "\n",
+ "#Results\n",
+ "print(\"output impedance is %.2f ohm \" %Zout)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "voltage gain\n",
+ "output impedance is 108.25 ohm \n"
+ ]
+ }
+ ],
+ "prompt_number": 4
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.5 Page No 558"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Rf2=220.0\n",
+ "R4=3.9*10**3\n",
+ "Acl=75.0\n",
+ "f=100.0\n",
+ "\n",
+ "#Calculations\n",
+ "Rf1=(Acl-1)*Rf2\n",
+ "Xc2=Rf2\n",
+ "C2=1/(2*3.14*f*Rf2)\n",
+ "Xcf1=Rf1/100\n",
+ "Cf1=1/(2*3.14*f*Xcf1)\n",
+ "\n",
+ "#Results\n",
+ "print('The value of Cf1= %.2f mF' %(Cf1*10**6))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of Cf1= 9.78 mF\n"
+ ]
+ }
+ ],
+ "prompt_number": 5
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.6 Page No 560"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "Acl=300.0\n",
+ "Rf2=220.0\n",
+ "R4=4.7*10**3\n",
+ "f=100.0\n",
+ "\n",
+ "#Calculations\n",
+ "Rf1=(Acl-1)*Rf2\n",
+ "xc2=Rf2\n",
+ "C2=1.0/(2*3.14*f*Rf2)\n",
+ "\n",
+ "#Results\n",
+ "print('The value of C2= %.2f mf' %(C2*10**6))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of C2= 7.24 mf\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.7, Page No 565"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "hfe=100.0\n",
+ "Vbe=0.7\n",
+ "Ic1=1.0*10**-3\n",
+ "\n",
+ "#Calculations\n",
+ "Ic2=Ic1\n",
+ "Ic3=Ic2\n",
+ "Ic4=Ic3\n",
+ "Vee=10.0\n",
+ "Vce=3.0\n",
+ "Acl=33.0\n",
+ "print(\"different resistor value of circuit\")\n",
+ "R1=Vbe/((10*Ic1)/hfe)\n",
+ "R3=(Vee-Vbe)/(Ic1+Ic2)\n",
+ "Vr2=Vee+Vbe-Vce\n",
+ "R4=Vr2/Ic1\n",
+ "R2=R4\n",
+ "R7=(Vr2-Vbe)/(Ic3+Ic4)\n",
+ "R8=Vee/Ic3\n",
+ "R6=6.8*10**3\n",
+ "R5=(Acl-1)*R6\n",
+ "\n",
+ "#Results\n",
+ "print('The value of R5= %.2f kohm' %(R5/1000))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "different resistor value of circuit\n",
+ "The value of R5= 217.60 kohm\n"
+ ]
+ }
+ ],
+ "prompt_number": 7
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.8 Page No 566"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math \n",
+ "\n",
+ "#initialisation of variables\n",
+ "Av=25000.0\n",
+ "hie=2.0*10**3\n",
+ "hib=25.0\n",
+ "hoe=1.0/(100*10**3)\n",
+ "R6=6.8*10**3\n",
+ "R5=220.0*10**3\n",
+ "R1=R6\n",
+ "\n",
+ "#Calculations\n",
+ "R8=10*10**3\n",
+ "B=R6/(R5+R6)\n",
+ "Acl=Av/(1+Av*B)\n",
+ "Zi=2*hie*(1+Av*B)\n",
+ "Zin=(Zi*R1)/(Zi+R1)\n",
+ "Zo=(1/hoe)/(1+Av*B)\n",
+ "Zout=(R8*Zo)/(R8+Zo)\n",
+ "\n",
+ "#Results\n",
+ "print(\"output impedance is %.2f ohm \" %Zout)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "output impedance is 131.48 ohm \n"
+ ]
+ }
+ ],
+ "prompt_number": 8
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.9 Page No 568"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "hic=2.0*10**3\n",
+ "hie=hic\n",
+ "hfe=100.0\n",
+ "hfc=100.0\n",
+ "Av=25000.0\n",
+ "B=1.0/33.4\n",
+ "\n",
+ "#Calculations\n",
+ "R8=10*10**3\n",
+ "R5=R8\n",
+ "Ze=(hic+R8)/hfc\n",
+ "Zo=Ze/(1+Av*B)\n",
+ "Zout=(R5*Zo)/(R5+Zo)\n",
+ "\n",
+ "#Results\n",
+ "print(\"output impedance is %.2fohm \" %Zout)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "output impedance is 0.16ohm \n"
+ ]
+ }
+ ],
+ "prompt_number": 9
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.10 Page No 570"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "hfemin=100.0\n",
+ "hfemax=400.0\n",
+ "hiemin=2.0*10**3\n",
+ "hiemax=5.0*10**3\n",
+ "Rc=12.0*10**3\n",
+ "Rl=120.0*10**3\n",
+ "Re1=150.0\n",
+ "\n",
+ "#Calculations\n",
+ "print(\" voltage gain at extreme value \")\n",
+ "Avmax=(hfemax*((Rc*Rl)/(Rc+Rl)))/(hiemax+Re1*(1+hfemax))\n",
+ "Avmin=(hfemin*((Rc*Rl)/(Rc+Rl)))/(hiemin+Re1*(1+hfemin))\n",
+ "\n",
+ "\n",
+ "#Results\n",
+ "print(\"approximate voltage gain\")\n",
+ "Av=((Rc*Rl)/(Rc+Rl))/Re1"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " voltage gain at extreme value \n",
+ "approximate voltage gain\n"
+ ]
+ }
+ ],
+ "prompt_number": 10
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.11, Page No 571"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "Av=70.0\n",
+ "f=100.0\n",
+ "rs=600.0\n",
+ "Rc=12.0*10**3\n",
+ "Rl=120*10**3\n",
+ "Re2=3.9*10**3\n",
+ "hie=2.0*10**3\n",
+ "hfe=100.0\n",
+ "R1=Rl\n",
+ "R2=39.0*10**3\n",
+ "Re1=150.0\n",
+ "\n",
+ "#Calculations\n",
+ "Zb=hie+Re1*(1+hfe)\n",
+ "Zin=(R1*R2*Zb)/(R1*R2+R1*Zb+R2*Zb)\n",
+ "C1=1/(2*3.14*f*((Zin+rs)/10))\n",
+ "C2=1/(2*3.14*f*Re1)\n",
+ "\n",
+ "#Results\n",
+ "print('The value of C2= %.2f mF ' %(C2*10**6))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of C2= 10.62 mF \n"
+ ]
+ }
+ ],
+ "prompt_number": 11
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.12, Page No 573"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Av=1000.0\n",
+ "f=100.0\n",
+ "hie=2.0*10**3\n",
+ "hfe=100.0\n",
+ "R8=12.0*10**3\n",
+ "Rl=120*10**3\n",
+ "R10=3.9*10**3\n",
+ "R6=Rl\n",
+ "R7=39.0*10**3\n",
+ "\n",
+ "#Calculations\n",
+ "R3=R8\n",
+ "Av1=math.sqrt(Av)\n",
+ "Av2=Av1\n",
+ "R9=((R8*Rl)/(R8+Rl))/Av2\n",
+ "R9=330#use standard value\n",
+ "Av2=((R8*Rl)/(R8+Rl))/R9\n",
+ "Av1=Av/Av2\n",
+ "Zb=hie+R9*(1+hfe)\n",
+ "Zin=(R6*R7*Zb)/(R6*R7+R6*Zb+R7*Zb)\n",
+ "R4=((R3*Zin)/(R3+Zin))/Av1\n",
+ "R5=R10-R4\n",
+ "\n",
+ "#Results\n",
+ "print('The value of R5= %.2f ' %(R5/1000))\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of R5= 3.67 \n"
+ ]
+ }
+ ],
+ "prompt_number": 12
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.13, Page No 574"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "f=100.0\n",
+ "hie=2.0*10**3\n",
+ "hfe=100.0\n",
+ "R8=12.0*10**3\n",
+ "Rl=120.0*10**3\n",
+ "R10=3.9*10**3\n",
+ "R6=Rl\n",
+ "R7=39.0*10**3\n",
+ "R3=R8\n",
+ "R4=220.0\n",
+ "rs=600.0\n",
+ "Zin2=16.0*10**3\n",
+ "R9=330.0\n",
+ "\n",
+ "#Calculations\n",
+ "Zb=hie+R4*(1+hfe)\n",
+ "Zin=(R1*R2*Zb)/(R1*R2+R1*Zb+R2*Zb)\n",
+ "C1=1.0/(2*3.14*f*((Zin+rs)/10))\n",
+ "Xc2=0.65*R4\n",
+ "C2=1.0/(2*3.14*f*Xc2)\n",
+ "C3=1.0/(2*3.14*f*((Zin2+R3)/10))\n",
+ "C4=1.0/(2*3.14*f*.65*R9)\n",
+ "C5=1.0/(2*3.14*f*((R8+Rl)/10))\n",
+ "\n",
+ "#Results\n",
+ "print('The value of C5= %.2f mF ' %(C5*10**6))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of C5= 0.12 mF \n"
+ ]
+ }
+ ],
+ "prompt_number": 13
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.14, Page No 580"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "hfe=100.0\n",
+ "hie=2.0*10**3\n",
+ "R4=100.0\n",
+ "R1=5.6*10**3\n",
+ "R6=2.2*10**3\n",
+ "\n",
+ "#Calculations\n",
+ "Zi=hie+(1+hfe)*R4\n",
+ "print(\"open loop current gain\")\n",
+ "Ai=(hfe*hfe*R1)/(R1+Zi)\n",
+ "B=R4/(R4+R6)\n",
+ "print(\"closed loop gain\")\n",
+ "Acl=Ai/(1+Ai*B)\n",
+ "Zi=hie/(1+Ai*B)\n",
+ "\n",
+ "#Results\n",
+ "print('The value of Zi= %.2f ohm ' %(Zi))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "open loop current gain\n",
+ "closed loop gain\n",
+ "The value of Zi= 14.43 ohm \n"
+ ]
+ }
+ ],
+ "prompt_number": 14
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 13.15, Page No 585"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Av=60000.0\n",
+ "Acl=300.0\n",
+ "f1=15.0*10**3\n",
+ "B=1.0/300\n",
+ "\n",
+ "#Calculations\n",
+ "f2=(Av*f1)/Acl\n",
+ "print(\"% distortion with NFB\")\n",
+ "NFB=(.1/(1+Av*B))*100.0\n",
+ "\n",
+ "#Results\n",
+ "print(\" percenatge distortion with NFB is %.3f percent \" %NFB)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "% distortion with NFB\n",
+ " percenatge distortion with NFB is 0.050 percent \n"
+ ]
+ }
+ ],
+ "prompt_number": 15
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
\ No newline at end of file |