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diff --git a/Electronic_Devices/Chapter17.ipynb b/Electronic_Devices/Chapter17.ipynb new file mode 100755 index 00000000..a95b29db --- /dev/null +++ b/Electronic_Devices/Chapter17.ipynb @@ -0,0 +1,336 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:dca2eb0dc5462992ceade27e53e297f6073a62b5b813c53a51758356342ce482" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h1>Chapter 17: Voltage Regulators<h1>" + ] + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h3>Example 17.1, Page Number:552 <h3>" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "%pylab inline" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "\n", + "Welcome to pylab, a matplotlib-based Python environment [backend: module://IPython.zmq.pylab.backend_inline].\n", + "For more information, type 'help(pylab)'." + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "#variable declaration\n", + "Del_V_out=0.25;\n", + "V_out=15;\n", + "Del_V_in=5; #All voltages in Volts\n", + "\n", + "#Calculations\n", + "line_regulation=((Del_V_out/V_out)/Del_V_in)*100;\n", + "\n", + "#Result\n", + "print('line regulation in %%V is %f' %line_regulation)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "line regulation in %V is 0.333333" + ] + } + ], + "prompt_number": 2 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h3>Example 17.2, Page Number: 553<h3>" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "# Variable Declaration\n", + "V_NL=12.0; #No load output voltage in Volts\n", + "V_FL=11.9; #Full load output voltage in Volts\n", + "I_F=10.0; #Full load current in milli-Amperes\n", + "\n", + "#Calculations\n", + "load_regulation=((V_NL-V_FL)/V_FL)*100;\n", + "load_reg=load_regulation/I_F;\n", + "\n", + "#Result\n", + "print('load regulation as percentage change from no load to full load = %f'%load_regulation)\n", + "print('\\nload regulation as percentage change per milliampere = %f' %load_reg)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "load regulation as percentage change from no load to full load = 0.840336\n", + "\n", + "load regulation as percentage change per milliampere = 0.084034" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h3>Example 17.3, Page Number: 556<h3>" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "\n", + "V_REF=5.1 #Zener voltage in volts\n", + "R2=10*10**3;\n", + "R3=10*10**3; #resistances in ohm\n", + "V_out=(1+(R2/R3))*V_REF;\n", + "print('output voltage in volts = %.1f'%V_out)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "output voltage in volts = 10.2" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h3>Example 17.4, Page Number: 557<h3>" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "R4=1; #Resistance in Ohms\n", + "I_L_max=0.7/R4;\n", + "print('maximum current provided to load(in amperes) = %.1f'%I_L_max)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "maximum current provided to load(in amperes) = 0.7" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h3>Example 17.5, Page Number: 560<h3>" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "V_IN=12.5; #maximum input voltage in volts\n", + "R1=22; #In Ohms\n", + "\n", + "V_OUT=0;\n", + "V_R1=V_IN-V_OUT; #Voltage across R1\n", + "P_R1=(V_R1*V_R1)/R1; #maximum power dissipated by R1\n", + "print('maximum power dissipated by R1 in WATTS = %f'%P_R1)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "maximum power dissipated by R1 in WATTS = 7.102273" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h3>Example 17.6, Page Number: 569<h3>" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "print('SAME AS EX-2.8 in CHAPTER-2')" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "SAME AS EX-2.8 in CHAPTER-2" + ] + } + ], + "prompt_number": 7 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h3>Example 17.7, Page Number: 572<h3>" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "I_max=700*10**-3; #in Amperes\n", + "R_ext=0.7/I_max;\n", + "print('value of resistor in Ohms for which max current is 700mA = %f'%R_ext)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "value of resistor in Ohms for which max current is 700mA = 1.000000" + ] + } + ], + "prompt_number": 8 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h3>Example 17.8, Page Number: 572<h3>" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "V_OUT=24.0; #Output voltage in Volts\n", + "R_L=10.0; #Load resistance in Ohms\n", + "V_IN=30.0; #Input voltage in Volts\n", + "I_max=700.0*10**-3; #maximum interal current in Amperes\n", + "I_L=V_OUT/R_L; #load current in amperes\n", + "I_ext=I_L-I_max; #current through the external pass transistor in Amperes\n", + "P_ext_Qext=I_ext*(V_IN-V_OUT); #power dissipated\n", + "print('power dissiated(in WATTS) by the external pass transistor = %.1f'%P_ext_Qext)\n", + "print('\\nFor safety purpose, we choose a power transistor with rating more than this, say 15W')" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "power dissiated(in WATTS) by the external pass transistor = 10.2\n", + "\n", + "For safety purpose, we choose a power transistor with rating more than this, say 15W" + ] + } + ], + "prompt_number": 9 + }, + { + "cell_type": "markdown", + "metadata": {}, + "source": [ + "<h3>Example 17.9, Page Number: 574<h3>" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "V_out=5.0; #7805 gives output voltage of 5V\n", + "I_L=1.0; #constant current of 1A\n", + "R1=V_out/I_L;\n", + "print('The value of current-setting resistor in ohms = %d'%R1)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "The value of current-setting resistor in ohms = 5" + ] + } + ], + "prompt_number": 10 + } + ], + "metadata": {} + } + ] +}
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