Added(A)/Deleted(D) following books

 A  Electronic_Communication_by_D._Roddy/Chapter10_Angle_Modulation.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter11_Pulse_Modulation.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter12_Digital_Communications.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter13_Transmission_Lines_And_Cables.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter14_WaveGuides.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter15_Radio_Wave_Propogation.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter16_Antennas.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter17_Telephone_Systems.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter18_Fascimile_and_Television.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter19_Satellite_Communications.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter1_Passive_Circuits.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter20_Fibre_Optic_Communication.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter2_Waveform_Spectra.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter4_Noise.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter5_Tuned_Small_Signal_Amplifiers,_Mixers_and_Active_Filters.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter6_Oscillators.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter7_Receivers.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter8_Amplitude_Modulation.ipynb
A  Electronic_Communication_by_D._Roddy/Chapter9_Single_Sideband_Modulation.ipynb
A  Electronic_Communication_by_D._Roddy/screenshots/1.png
A  Electronic_Communication_by_D._Roddy/screenshots/12.png
A  Electronic_Communication_by_D._Roddy/screenshots/9.png
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter11_Control_of_DC_Motors_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter12_Controllers_and_Their_Optimisation_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter13_Choppers_and_Transportation_system_Application_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter15_The_AC_motor_control_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter16_Faults_and_Protection_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter3_Fabrication_and_Thermal_characteristics_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter4_Series_and_Parallel_Connection_of_Thyristors_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter5_Line_Commutated_converters_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter7_Inverter_Circuits_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter8_Harmonic_and_PowerFactor_with_the_converter_system_1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/Chapter_2_The_Device__1.ipynb
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/screenshots/11.JPG
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/screenshots/15.JPG
A  Thyristors_Theory_And_Applications_by_R._K._Sugandhi_And_K._K._Sugandhi/screenshots/8.JPG

1 files changed, 372 insertions, 0 deletions

diff --git a/Electronic_Communication_by_D._Roddy/Chapter1_Passive_Circuits.ipynb b/Electronic_Communication_by_D._Roddy/Chapter1_Passive_Circuits.ipynb
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@@ -0,0 +1,372 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 1 Passive Circuits"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 1.2.2, Pg.no.5"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 50,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The value of resistance R is 16.61 ohm\n",
+      "The value of resistance R3 is 66.8 ohm\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "#given\n",
+    "Ro=50.0\n",
+    "ILdB=6.0                    #T−type attenuator provide 6−dB insertion loss \n",
+    "#calculation\n",
+    "IL=10**-(ILdB/20)           #Determination of R\n",
+    "R=Ro*(1-IL)/(1+IL)\n",
+    "R=round(R,2)\n",
+    "print 'The value of resistance R is',R,'ohm' \n",
+    "#Determination of R3\n",
+    "R3=(2*Ro*IL)/(1-(0.5)**2)\n",
+    "R3=round(R3,1)\n",
+    "print 'The value of resistance R3 is',R3,'ohm'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 1.2.3,Pg.no.6"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 51,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The value of resistance RA and RB is 150.5 ohm\n",
+      "The value of resistance RC is 37.4 ohm\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "#given\n",
+    "Ro=50.0\n",
+    "ILdB=6.0\n",
+    "IL=10**-(ILdB/20)         #Determination of RA and RB\n",
+    "RA=Ro*(1+IL)/(1-IL)\n",
+    "RA=round(RA,1)\n",
+    "print 'The value of resistance RA and RB is',RA,'ohm'\n",
+    "#Determination of RC\n",
+    "RC=Ro*(1-(IL)**2)/(2*IL)\n",
+    "RC=round(RC,1)\n",
+    "print 'The value of resistance RC is',RC,'ohm'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 1.2.4,Pg.no.8"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 52,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The value of resistance R1 is 43.3 ohm\n",
+      "The value of resistance R3 is 86.61 ohm\n",
+      "The value of insertion loss is 5.42 dB\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "from math import log10,sqrt\n",
+    "#given\n",
+    "Rs=75.0          #resistance\n",
+    "Rl=50.0       \n",
+    "#Determination of R1\n",
+    "R1=sqrt(Rs*(Rs-Rl))\n",
+    "R1=round(R1,2)\n",
+    "print 'The value of resistance R1 is',R1,'ohm'\n",
+    "#Determination of R3\n",
+    "R3=((Rs**2)-(R1**2))/R1\n",
+    "R3=round(R3,2)\n",
+    "print 'The value of resistance R3 is',R3,'ohm'\n",
+    "#Determination of insertion loss\n",
+    "IL=(R3*(Rs+R1))/((Rs+R1+R3)*(R3+R1)-(R3)**2)\n",
+    "ILdB=-20*log10(IL) #convertion of power in decibels\n",
+    "ILdB=round(ILdB,2)\n",
+    "print 'The value of insertion loss is',ILdB,'dB'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 1.2.5,Pg.no.9"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 53,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The value of resistance R2 is 44.721 ohm\n",
+      "The value of resistance R3 is 11.18 ohm\n",
+      "The value of insertion loss is 9.99 dB\n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import log10,sqrt\n",
+    "Rs=10.0\n",
+    "Rl=50.0        #Determination of R2\n",
+    "R2=sqrt(Rl*(Rl-Rs))\n",
+    "R2=round(R2,3)\n",
+    "print 'The value of resistance R2 is',R2,'ohm'\n",
+    "#Determination of R3\n",
+    "R3=((Rl**2)-(R2**2))/R2\n",
+    "R3=round(R3,2)\n",
+    "print 'The value of resistance R3 is',R3,'ohm'\n",
+    "#Determination of insertion loss\n",
+    "IL=(R3*(Rs+Rl))/((Rs+R3)*(R3+R2+Rl)-(R3)**2)\n",
+    "ILdB=-20*log10(IL)           #convertion of power in decibels\n",
+    "ILdB=round(ILdB,2)\n",
+    "print 'The value of insertion loss is',ILdB,'dB'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 1.5.1,Pg.no.19"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 54,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The value of self resonant freq is 60.2 MHz\n",
+      "The value of Q−factor is 31.4\n",
+      "The value of effective inductance is 1.0 uH\n",
+      "The value of effective Q−factor is 26.0\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "from math import sqrt\n",
+    "C=7*10**-12\n",
+    "R=5.0\n",
+    "L=10**-6\n",
+    "f=25*10**6       \n",
+    "#Determination of self resonant freq of coil denoted as Fsr\n",
+    "Fsr=1/(2*3.14*(L*C)**0.5)\n",
+    "Fsr=Fsr/(10**6)\n",
+    "Fsr=round(Fsr,1)\n",
+    "print 'The value of self resonant freq is',Fsr,'MHz'\n",
+    "#Determination of Q−factor of coil , excluding self − capacitive effects\n",
+    "Q=(2*3.14*f*L)/R\n",
+    "print 'The value of Q−factor is',Q\n",
+    "#Determination of effective inductance\n",
+    "Leff=(1-(25/60)**2)**-1\n",
+    "Leff=round(Leff,0)\n",
+    "print 'The value of effective inductance is',Leff,'uH'\n",
+    "#Determination of effective Q−factor\n",
+    "Qeff=(1-0.173)*Q\n",
+    "Qeff=round(Qeff,0)\n",
+    "print 'The value of effective Q−factor is',Qeff"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 1.8.1,Pg.no.23"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 55,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The value of common resonant freq is 3.77 Mrad/sec\n",
+      "Zm= 5.655j\n",
+      "The transfer impedance is (43.8+2250j) ohm\n"
+     ]
+    }
+   ],
+   "source": [
+    "import cmath\n",
+    "from math import sqrt\n",
+    "#given\n",
+    "Lp=150*10**-6           #inductance\n",
+    "Ls=150*10**-6\n",
+    "Cp=470*10**-12          #capacitance\n",
+    "Cs=470*10**-12          #Lp=Ls=150 uH,Cp=Cs=470 pF\n",
+    "Q=85.0                  #Q−factor for each ckt is 85\n",
+    "c=0.01                  #Coeff of coupling is 0.01\n",
+    "Rl=5000.0               #Load resistance Rl=5000 ohm\n",
+    "r=75000.0               #Constant current source with internal resistance r=75 kohm\n",
+    "#calculations\n",
+    "#Determination of common resonant frequency\n",
+    "wo=1/(sqrt(Lp*Cp))\n",
+    "wo=wo/(10**6)\n",
+    "wo=round(wo,2)\n",
+    "print 'The value of common resonant freq is',wo,'Mrad/sec'\n",
+    "p=3.77*10**6\n",
+    "Z2=complex(62.9004,558)               #Formula=Rl/(1+(p*j*Cs*Rl))\n",
+    "Z1=complex(4.3,565)                   #Formula=r/(1+(p*j*Cp*r)) ;At resonance Zs=Zp=Z\n",
+    "z=complex(0,1)\n",
+    "Z=wo*Ls*(1/Q +z)\n",
+    "Zm=complex(0,p*c*Lp)             #Determination of denominator\n",
+    "print 'Zm=',Zm\n",
+    "Dr=((Z+Z1)*(Z+Z2))-(Zm**2) \n",
+    "Dr=complex(791,80)\n",
+    "#Hence transfer impedance is given as\n",
+    "Zr=complex(43.8,2.25*10**3)        #formula=(Z1*Z2*Zm)/Dr\n",
+    "print 'The transfer impedance is',Zr,'ohm'"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 1.10.1,Pg.no.31"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 56,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The value of common resonant freq is 169.56 Mrad/ sec\n",
+      "The value of Gl is 5.0 mSec\n",
+      "The value of alpha is 3.14\n",
+      "The value of effective load is 1.97 kohm\n",
+      "The value of tuning capacitance is 47.73 pF\n",
+      "The value of Rd is 18.534 kohm\n",
+      "The value of −3dB BW is 1.69 MHz\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "C1=70*10**-12\n",
+    "C2=150*10**-12\n",
+    "Rl=200.0\n",
+    "Q=150.0\n",
+    "f=27*10**6\n",
+    "r=40000.0\n",
+    "#Determination of common resonant freq\n",
+    "wo=2*3.14*f\n",
+    "wo=wo/(10**6)\n",
+    "print 'The value of common resonant freq is',wo,'Mrad/ sec'\n",
+    "#Determination of Gl\n",
+    "Gl=1/Rl\n",
+    "G1=Gl*(10**3) \n",
+    "print'The value of Gl is',G1,'mSec'\n",
+    "#Checking the approxiamtion in denominator\n",
+    "ap=((wo*(C1+C2))/(Gl))**2\n",
+    "alpha=(C1+C2)/C1\n",
+    "alpha=round(alpha,2)\n",
+    "print 'The value of alpha is',alpha\n",
+    "#Determination of effective load\n",
+    "Reff=((alpha)**2)*Rl\n",
+    "Reff=Reff/(10**3)\n",
+    "Reff=round(Reff,2)\n",
+    "print 'The value of effective load is',Reff,'kohm'   \n",
+    "#If effective load is much less than internal resistance hence tuning capacitance then\n",
+    "Cs=C1*C2/(C1+C2)\n",
+    "Cs=Cs*(10**12)\n",
+    "Cs=round(Cs,2)\n",
+    "print 'The value of tuning capacitance is',Cs,'pF'\n",
+    "#Determination of Rd\n",
+    "Rd=Q/(wo*Cs)*(10**3)\n",
+    "Rd=round(Rd,3)\n",
+    "print 'The value of Rd is',Rd,'kohm'\n",
+    "#If Rd is much greater than Reff then −3dB bandwidth is given by\n",
+    "B=1/(2*3.14*C2*alpha*Rl)\n",
+    "B=B/(10**6)\n",
+    "B=round(B,2)\n",
+    "print 'The value of −3dB BW is',B,'MHz'"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.10"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}