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| author | hardythe1 | 2015-04-07 15:58:05 +0530 |
|---|---|---|
| committer | hardythe1 | 2015-04-07 15:58:05 +0530 |
| commit | c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131 (patch) | |
| tree | 725a7d43dc1687edf95bc36d39bebc3000f1de8f /Electronic_Devices_and_Circuits/Chapter18_2.ipynb | |
| parent | 62aa228e2519ac7b7f1aef53001f2f2e988a6eb1 (diff) | |
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diff --git a/Electronic_Devices_and_Circuits/Chapter18_2.ipynb b/Electronic_Devices_and_Circuits/Chapter18_2.ipynb new file mode 100755 index 00000000..4cac5251 --- /dev/null +++ b/Electronic_Devices_and_Circuits/Chapter18_2.ipynb @@ -0,0 +1,684 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 18 : Linear and switching voltage regulators"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.1, Page No 761"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Vs=21.0\n",
+ "Vo=12.0\n",
+ "Av=100.0\n",
+ "\n",
+ "#Calculations\n",
+ "vo=(Vs*0.1)/Av#source effect is 10% of the Vs\n",
+ "print(\" source effect is %3.3fV \" %vo)\n",
+ "vo=(21-20)/100.0\n",
+ "print(\" laod effect is %3.3fV \" %vo)\n",
+ "LR=(21*10**-3 *100)/12.0\n",
+ "print(\"line regulation is %3.3fpercentage \" %LR)\n",
+ "LR=(10*10**-3*100)/12.0\n",
+ "print(\" load effect is %3.3fpercentage \" %LR)\n",
+ "RJ=20*math.log((1.0/Av),10)\n",
+ "\n",
+ "#Results\n",
+ "print(\"ripple rejection is %d dB \" %RJ)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " source effect is 0.021V \n",
+ " laod effect is 0.010V \n",
+ "line regulation is 0.175percentage \n",
+ " load effect is 0.083percentage \n",
+ "ripple rejection is -39 dB \n"
+ ]
+ }
+ ],
+ "prompt_number": 25
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.2, Page No 762"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Vo=12.0\n",
+ "Il=40.0*10**-3\n",
+ "Vs=20.0\n",
+ "Vbe=.7\n",
+ "Vz=0.75*Vo\n",
+ "print(\"for minimum D1 current select\")\n",
+ "Ir2=10.0*10**-3\n",
+ "\n",
+ "#Calculations\n",
+ "R2=(Vo-Vz)/Ir2\n",
+ "Ie1=Il+Ir2\n",
+ "print(\"specification for Q\")\n",
+ "Vce1=20 \n",
+ "Vs=Vce1\n",
+ "Ic1=50*10**-3\n",
+ "Pd=(Vs-Vo)*Ie1\n",
+ "hfe=50\n",
+ "Ib1=Ie1/hfe\n",
+ "Ic2=5*10**-3\n",
+ "R1=(Vs-(Vo+.7))/(Ic2+Ib1)\n",
+ "Iz=Ie1+Ir2\n",
+ "I4=1*10**-3\n",
+ "R4=(Vz+Vbe)/I4\n",
+ "R3=(Vo-(Vz+Vbe))/I4\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of R3 is %.2f kohm\" %(R3/1000))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "for minimum D1 current select\n",
+ "specification for Q\n",
+ "The value of R3 is 2.30 kohm\n"
+ ]
+ }
+ ],
+ "prompt_number": 26
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.3 Page No 765"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "\n",
+ "I4=1.0*10**-3\n",
+ "Vb2=9.8\n",
+ "\n",
+ "#Calculations\n",
+ "print(\" for Vo=11V moving contact at top of R5\")\n",
+ "Vo=11\n",
+ "R3=(Vo-Vb2)/I4\n",
+ "R=Vb2/I4#R=R4+R5\n",
+ "print(\" for Vo=13V moving contact at bottom of R5\")\n",
+ "Vo=13\n",
+ "I4=Vo/(R3+R)\n",
+ "R4=Vb2/I4\n",
+ "R5=R-R4\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of R5 is %.2f kohm\" %(R5/1000))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " for Vo=11V moving contact at top of R5\n",
+ " for Vo=13V moving contact at bottom of R5\n",
+ "The value of R5 is 1.51 kohm\n"
+ ]
+ }
+ ],
+ "prompt_number": 27
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.4, Page No 766"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "hFE3=50.0\n",
+ "hFE1=20.0\n",
+ "Ie1=200.0*10**-3+10*10**-3\n",
+ "Ic2=1.0*1**-3\n",
+ "Vs=20.0\n",
+ "Vb3=13.4\n",
+ "Vo=12.0\n",
+ "Vbe=0.7\n",
+ "\n",
+ "#Calculations\n",
+ "Ib1=Ie1/hFE1\n",
+ "Ib3=Ib1/hFE3\n",
+ "R1=(Vs-Vb3)/(Ic2+Ib3)\n",
+ "print(\"select I6=.5*10**-3\")\n",
+ "I6=.5*10**-3\n",
+ "R6=(Vo+Vbe)/I6\n",
+ "Pd=(Vs-Vo)*Ie1\n",
+ "\n",
+ "#Results\n",
+ "print(\" peak power dissipated is %.3fnW \" %Pd)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "select I6=.5*10**-3\n",
+ " peak power dissipated is 1.680nW \n"
+ ]
+ }
+ ],
+ "prompt_number": 28
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.5 Page No 769"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Vr1=3.0\n",
+ "Ic2=1.0*10**-3\n",
+ "Ib3=0.21*10**-3\n",
+ "Vbe1=0.7\n",
+ "Vbe3=Vbe1\n",
+ "Vs=20.0\n",
+ "\n",
+ "#Calculations\n",
+ "R1=Vr1/(Ic2+Ib3)\n",
+ "Vz2=Vo+Vbe1+Vbe3+Vr1\n",
+ "Ir7=5*10**-3\n",
+ "R2=(Vs-Vz2)/Ir7\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of R2 is %.2f kohm\" %(R2/1000))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of R2 is 0.72 kohm\n"
+ ]
+ }
+ ],
+ "prompt_number": 29
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.6 Page No 770"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Vc5=9.8\n",
+ "Vb2=Vc5\n",
+ "Vce5=3.0\n",
+ "Vbe=0.7\n",
+ "Vo=12.0\n",
+ "\n",
+ "#Calculations\n",
+ "Vr9=Vc5-Vce5\n",
+ "Vz2=Vr9+Vbe\n",
+ "Ic5=1.0*10**-3\n",
+ "R8=(Vo-Vc5)/Ic5\n",
+ "Ir9=2*Ic5\n",
+ "R9=Vr9/Ir9\n",
+ "print(\" Iz2>>Ib5 and Iz2> Izk for the zener diode \")\n",
+ "Iz2=10*10**-3\n",
+ "R7=(Vo-Vz2)/Iz2\n",
+ "I4=1*10**-3\n",
+ "Vb6=7.5\n",
+ "Vz2=Vb6\n",
+ "print(\" when Vo=11V moving contact at top of R5 \")\n",
+ "Vo=11\n",
+ "R3=(Vo-Vb6)/I4\n",
+ "R3=3.3*10**3#use standard value\n",
+ "I4=(Vo-Vb6)/R3\n",
+ "R=Vb6/I4#R=R4+R5\n",
+ "print(\" when Vo=13V moving contact at bottom of R5\")\n",
+ "Vo=13.0\n",
+ "Vb6=7.5\n",
+ "I4=Vo/(R3+R)\n",
+ "R4=Vb6/I4\n",
+ "R5=R-R4\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of R5 is %.2f kohm\" %(R5/1000))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " Iz2>>Ib5 and Iz2> Izk for the zener diode \n",
+ " when Vo=11V moving contact at top of R5 \n",
+ " when Vo=13V moving contact at bottom of R5\n",
+ "The value of R5 is 1.09 kohm\n"
+ ]
+ }
+ ],
+ "prompt_number": 30
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.7, Page No 770"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Isc=100.0*10**-3\n",
+ "Vr10=0.5\n",
+ "Vo=12.0\n",
+ "\n",
+ "#Calculations\n",
+ "R10=Vr10/Isc\n",
+ "R10=4.7#use standard value\n",
+ "Il=200.0*10**-3\n",
+ "Vr10=Il*R10\n",
+ "Vr11=Vr10-.5\n",
+ "I11=1.0*10**-3\n",
+ "R11=Vr11/I11\n",
+ "R12=(Vo+Vr10-Vr11)/I11\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of R12 is %.2f kohm\" %(R12/1000))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of R12 is 12.50 kohm\n"
+ ]
+ }
+ ],
+ "prompt_number": 31
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.8 Page No 778"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math \n",
+ "\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Vo=12.0\n",
+ "hFE1=20.0\n",
+ "hFE2=50.0\n",
+ "Il=250.0*10**-3\n",
+ "Vz=0.75*Vo\n",
+ "Vz=9.1#use standard value for 1N757 diode\n",
+ "Iz1=10.0*10**-3\n",
+ "\n",
+ "#Calculations\n",
+ "R1=(Vo-Vz)/Iz1\n",
+ "I3=1.0*10**-3\n",
+ "print(\" when V0=12V(moving contact at top of R5)\")\n",
+ "R3=(Vo-Vz)/I3\n",
+ "R=Vz/I3\n",
+ "print(\" when Vo=15V moving contact at bottom of R5\")\n",
+ "Vo=15\n",
+ "I3=Vo/(R+R3)\n",
+ "R4=Vz/I3\n",
+ "R5=R-R4\n",
+ "Ir6=.5*10**-3\n",
+ "R6=Vo/Ir6\n",
+ "print(\" op-amp output current\")\n",
+ "Ib2=Il/(hFE1*hFE2)\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of Ib2 is %.2f mA\" %(Ib2*10**3))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " when V0=12V(moving contact at top of R5)\n",
+ " when Vo=15V moving contact at bottom of R5\n",
+ " op-amp output current\n",
+ "The value of Ib2 is 0.25 mA\n"
+ ]
+ }
+ ],
+ "prompt_number": 32
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.9 Page No 782"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "I2=1.0*10**-3\n",
+ "Vr2=7.15\n",
+ "Vref=Vr2\n",
+ "Vo=10.0\n",
+ "Pdmax=1000.0*10**-3\n",
+ "\n",
+ "#Calculations\n",
+ "R2=Vref/I2\n",
+ "R2=6.8*10**3#use standard value and recalculate the I2\n",
+ "I2=Vref/R2\n",
+ "R1=(Vo-Vref)/I2\n",
+ "Vs=Vo+5#for satisfactory operation of series pass transistor\n",
+ "Iint=25*10**-3#internal circuit current\n",
+ "Pi=Vs*Iint\n",
+ "print(\"maximum power dissipated in series pass transistor\")\n",
+ "Pd=Pdmax-Pi\n",
+ "print(\"maximum load current is \")\n",
+ "Il=Pd/(Vs-Vo)\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of Il is %.2f mA\" %(Il*10**3))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "maximum power dissipated in series pass transistor\n",
+ "maximum load current is \n",
+ "The value of Il is 125.00 mA\n"
+ ]
+ }
+ ],
+ "prompt_number": 33
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.10 Page No 785"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "\n",
+ "I1=1.0*10**-3\n",
+ "Vref=1.25\n",
+ "Vo=6.0\n",
+ "Vs=15.0\n",
+ "Il=200.0*10**-3\n",
+ "\n",
+ "#Calculations\n",
+ "R1=Vref/I1\n",
+ "R2=(Vo-Vref)/I1\n",
+ "Pd=(Vs-Vo)*Il\n",
+ "\n",
+ "#Results\n",
+ "print(\"regulated power dissipation is %.2f W \" %Pd)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "regulated power dissipation is 1.80 W \n"
+ ]
+ }
+ ],
+ "prompt_number": 34
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.11, Page No 788"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "\n",
+ "Vo=10.0\n",
+ "Io=1.0\n",
+ "Vce=7.0\n",
+ "Vf=1.0\n",
+ "\n",
+ "#Calculations\n",
+ "Po=Vo*Io\n",
+ "print(\" linear regulator\")\n",
+ "Pi=Po+(Vce*Io)\n",
+ "n=(Po*100.0)/Pi#efficiency\n",
+ "print(\" switching regulator\")\n",
+ "Vce=1\n",
+ "Pi=Po+Io*(Vce+Vf)\n",
+ "n=(Po*100.0)/Pi#efficiency\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of n is %.2f \" %(n))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " linear regulator\n",
+ " switching regulator\n",
+ "The value of n is 83.33 \n"
+ ]
+ }
+ ],
+ "prompt_number": 35
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.12, Page No 752"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "f=50.0*10**3\n",
+ "Vo=12.0\n",
+ "Vf=0.7\n",
+ "Vi=30.0\n",
+ "Vsat=1.0\n",
+ "Io=500.0*10**-3\n",
+ "Vr=100.0*10**-3\n",
+ "\n",
+ "#Calculations\n",
+ "T=1.0/f\n",
+ "t=(Vo+Vf)/(Vi-Vsat-Vo)\n",
+ "toff=T/1.75\n",
+ "ton=T-toff\n",
+ "Ip=2*Io\n",
+ "L1=((Vi-Vsat-Vo)*ton)/Ip\n",
+ "C1=Ip/(8.0*f*Vr)\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of C1 is %.2f pF\" %(C1*10**6))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The value of C1 is 25.00 pF\n"
+ ]
+ }
+ ],
+ "prompt_number": 36
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 18.13, Page No 799"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "#initialisation of variables\n",
+ "\n",
+ "print(\" an MC34063 controller is for step down transformer\")\n",
+ "Ib=-400.0*10**-3\n",
+ "I1=1.0*10**-3\n",
+ "Vref=1.25\n",
+ "V0=12.0\n",
+ "Ip=1.0\n",
+ "\n",
+ "#Calculations\n",
+ "ton=8.6*10**-6\n",
+ "R1=Vref/I1\n",
+ "R1=1.2*10**3#use standard value\n",
+ "I1=Vref/R1\n",
+ "R2=(Vo-Vref)/I1\n",
+ "Rsc=.33/Ip\n",
+ "Ct=4.8*10**-5 *ton\n",
+ "\n",
+ "#Results\n",
+ "print(\"The value of Ct is %.2f pF\" %(Ct*10**6))"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ " an MC34063 controller is for step down transformer\n",
+ "The value of Ct is 0.00 pF\n"
+ ]
+ }
+ ],
+ "prompt_number": 37
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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