From c7fe425ef3c5e8804f2f5de3d8fffedf5e2f1131 Mon Sep 17 00:00:00 2001 From: hardythe1 Date: Tue, 7 Apr 2015 15:58:05 +0530 Subject: added books --- Electronic_Devices_and_Circuits/Chapter18_1.ipynb | 684 ++++++++++++++++++++++ 1 file changed, 684 insertions(+) create mode 100755 Electronic_Devices_and_Circuits/Chapter18_1.ipynb (limited to 'Electronic_Devices_and_Circuits/Chapter18_1.ipynb') diff --git a/Electronic_Devices_and_Circuits/Chapter18_1.ipynb b/Electronic_Devices_and_Circuits/Chapter18_1.ipynb new file mode 100755 index 00000000..4cac5251 --- /dev/null +++ b/Electronic_Devices_and_Circuits/Chapter18_1.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": {} + } + ] +} \ No newline at end of file -- cgit