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diff --git a/sample_notebooks/ParitoshMehta/ch4.ipynb b/sample_notebooks/ParitoshMehta/ch4.ipynb new file mode 100755 index 00000000..c94b7f1e --- /dev/null +++ b/sample_notebooks/ParitoshMehta/ch4.ipynb @@ -0,0 +1,147 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:6400e06363df718a0205b64ca5c3fc7d61a14e362b1dd10172150d22b3db1e89" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 4 : Communication Filters and Signal Transmission" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.5 Page No : 120" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math \n", + "from numpy import array,log10,sqrt\n", + "\n", + "# Variables\n", + "f = array([500., 2000., 10000.]); #frequency in Hz\n", + "\n", + "# Calculations\n", + "Af = 1/sqrt(1+(f/1000)**8); #Linear amplitude response\n", + "AdBf = 20*log10(Af);\n", + "\n", + "# Results\n", + "print ' f,Hz (Af) (AdBf)'\n", + "for i in range(3):\n", + " print ' %5i Hz %.5f %.3f dB'%(f[i],Af[i],AdBf[i])\n", + "\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " f,Hz (Af) (AdBf)\n", + " 500 Hz 0.99805 -0.017 dB\n", + " 2000 Hz 0.06238 -24.099 dB\n", + " 10000 Hz 0.00010 -80.000 dB\n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.6 Page No : 123" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math \n", + "\n", + "# Variables\n", + "L = 4.*10**-6; #Henry\n", + "C = 9.*10**-12; #Farad\n", + "R = 20.*10**3; #ohm\n", + "\n", + "# Calculations and Results\n", + "f0 = 1/(2*math.pi*math.sqrt(L*C)); #frequency in Hz\n", + "print 'a) The resonant frequency is f0 = %.2f MHz'%(f0*10**-6)\n", + "Q = R*math.sqrt(C/L)\n", + "print ' b) The Q is %i'%(Q);\n", + "B = f0/Q;\n", + "print ' c) The 3-dB bandwidth is B = %i KHz'%(B*10**-3);\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "a) The resonant frequency is f0 = 26.53 MHz\n", + " b) The Q is 30\n", + " c) The 3-dB bandwidth is B = 884 KHz\n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.7 Page No : 125" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "\n", + "# Variables\n", + "#misprinted example number\n", + "pulse_width = 2*10**-6; #second\n", + "rise_time = 10*10**-9; #second\n", + "\n", + "# Calculations and Results\n", + "B = .5/pulse_width; #in Hz\n", + "print 'a) The aproximate bandwidth for coarse reproduction is B = %i KHz'%(B*10**-3)\n", + "B = .5/rise_time;\n", + "print ' b) The aproximate bandwidth for fine reproduction is B = %i MHz'%(B*10**-6)\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "a) The aproximate bandwidth for coarse reproduction is B = 250 KHz\n", + " b) The aproximate bandwidth for fine reproduction is B = 50 MHz\n" + ] + } + ], + "prompt_number": 7 + } + ], + "metadata": {} + } + ] +}
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