Added(A)/Deleted(D) following books

 R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter11.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter11.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter11_1cYIymv.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter11_1cYIymv.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter11_b2XsTwq.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter11_b2XsTwq.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter12.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter12.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter12_MbtXOSy.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter12_MbtXOSy.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter12_tyNLSnr.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter12_tyNLSnr.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter13.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter13.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter13_IKwAwKI.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter13_IKwAwKI.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter13_xbFXJW8.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter13_xbFXJW8.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter14.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter14.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter14_Gi0X0ZR.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter14_Gi0X0ZR.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter14_XSNxMWG.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter14_XSNxMWG.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter15.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter15.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter15_QY6wZIq.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter15_QY6wZIq.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter15_RiCS0Ai.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter15_RiCS0Ai.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter16.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter16.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter16_0NyhPvP.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter16_0NyhPvP.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter16_pnkscJu.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter16_pnkscJu.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter18.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter18.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter18_C36GpSn.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter18_C36GpSn.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter18_EqgYm0p.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter18_EqgYm0p.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter19.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter19.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter19_0g2boiT.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter19_0g2boiT.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter19_QpHK5JI.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter19_QpHK5JI.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter2.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter2.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter20.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter20.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter20_SPZbkqz.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter20_SPZbkqz.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter20_hKMNWxW.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter20_hKMNWxW.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter21.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter21.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter21_GeNhAzQ.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter21_GeNhAzQ.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter21_tQfhnpH.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter21_tQfhnpH.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter22.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter22.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter22_R5zqRoP.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter22_R5zqRoP.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter22_wZJNJdr.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter22_wZJNJdr.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter23.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter23.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter23_3CMvYM4.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter23_3CMvYM4.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter23_9hMbnX4.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter23_9hMbnX4.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter2_8BakG8I.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter2_8BakG8I.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter2_W8u7liz.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter2_W8u7liz.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter5.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter5.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter5_RsBz4a7.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter5_RsBz4a7.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter5_VQzvFGO.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter5_VQzvFGO.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter6.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter6.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter6_18MJqWw.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter6_18MJqWw.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter6_4vuzkiJ.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter6_4vuzkiJ.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter8.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter8.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter8_817bFiA.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter8_817bFiA.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter8_wMvTWIF.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter8_wMvTWIF.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter9.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter9.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter9_f0YzOCH.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter9_f0YzOCH.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/Chapter9_vhHgT2e.ipynb -> Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter9_vhHgT2e.ipynb
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/cap1.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/cap1.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/cap1_v96t3WK.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/cap1_v96t3WK.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/index.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/index.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/index2.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/index2.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/index2_za7aGFC.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/index2_za7aGFC.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/index_Is0qqx4.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/index_Is0qqx4.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/pic1.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/pic1.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/pic2.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/pic2.png
R  Electrical_&_Electronic_Systems_by_Neil_Storey/screenshots/pic3.png -> Electrical_and_Electronic_Systems_by_Neil_Storey/screenshots/pic3.png
M  f_by_df/README.txt
A  f_by_df/ami.ipynb
A  f_by_df/screenshots/array_factor_TIPCqXh.png
A  f_by_df/screenshots/array_factor_iQfSDI6.png
A  f_by_df/screenshots/blank1_copy.png

1 files changed, 395 insertions, 0 deletions

diff --git a/Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter15.ipynb b/Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter15.ipynb
new file mode 100644
index 00000000..0cab5dbb
--- /dev/null
+++ b/Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter15.ipynb
@@ -0,0 +1,395 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter : Alternating Voltages and Currents"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 15.1, Page 305"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Reactance, Xl = 1 Ohm\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Initialisation\n",
+    "w=1000                 #Angular Frequency       \n",
+    "L=10**-3               #Inductance\n",
+    "\n",
+    "#Calculation\n",
+    "Xl=w*L                 #Reactance\n",
+    "\n",
+    "#Result\n",
+    "print'Reactance, Xl = %d Ohm'%Xl"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 15.2, Page 305"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Reactance, Xl = 1.59 KOhm\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "\n",
+    "#Initialisation\n",
+    "f=50                   #frequency\n",
+    "C=2*10**-6             #Capacitance\n",
+    "\n",
+    "#Calculation\n",
+    "w=2*math.pi*f                 #Angular Frequency  \n",
+    "Xc=1/(w*C)                 #Reactance\n",
+    "\n",
+    "#Result\n",
+    "print'Reactance, Xl = %.2f KOhm'%(Xc/1000)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 15.3, Page 306"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 15,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Peak Current, IL = 318 mA\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "\n",
+    "#Initialisation\n",
+    "f=100                  #frequency\n",
+    "l=25*10**-3               #Inductance\n",
+    "Vl=5                    #AC Voltage (Sine)\n",
+    "\n",
+    "#Calculation\n",
+    "w=2*math.pi*f                 #Angular Frequency  \n",
+    "Xl=w*l                 #Reactance\n",
+    "Il=Vl*Xl**-1\n",
+    "\n",
+    "#Result\n",
+    "print'Peak Current, IL = %d mA'%(Il*10**3)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 15.4, Page 306"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Voltage appear across the capacitor, V = 8 V r.m.s\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "\n",
+    "#Initialisation\n",
+    "Ic=2                 #sinusoidal Current\n",
+    "C=10*10**-3          #Capacitance\n",
+    "w=25                 #Angular Frequency  \n",
+    "\n",
+    "\n",
+    "\n",
+    "#Calculation \n",
+    "Xc=1/(w*C)                 #Reactance\n",
+    "Vc= Ic*Xc                   #Voltage\n",
+    "\n",
+    "#Result\n",
+    "print'Voltage appear across the capacitor, V = %d V r.m.s'%(Vc)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 15.5, Page 309"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "(a) V = 63.6 V\n",
+      "(b) V = 38.15 V\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "\n",
+    "#Initialisation\n",
+    "I=5                   #sinusoidal Current\n",
+    "R=10                  #Resistance in Ohm\n",
+    "f=50                  #Frequency in Hertz\n",
+    "L=0.025               #Inductancec in Henry\n",
+    " \n",
+    "\n",
+    "#Calculation \n",
+    "Vr=I*R                         #Voltage across resistor\n",
+    "Xl=2*math.pi*f*L               #Reactance\n",
+    "VL= I*Xl                       #Voltage across inductor\n",
+    "V=math.sqrt((Vr**2)+(VL**2))   #total voltage\n",
+    "phi=math.atan(VL*Vr**-1)       #Phase Angle in radians\n",
+    "\n",
+    "#Result\n",
+    "print'(a) V = %.1f V'%(V)\n",
+    "print'(b) V = %.2f V'%(phi*180/math.pi)         #phase angle in degree"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 15.6, Page 311"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 45,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "(a) Current, I = 884 uA\n",
+      "(b) V = -27.95 V\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "\n",
+    "#Initialisation\n",
+    "R=10**4                  #Resistance in Ohm\n",
+    "f=10**3                  #Frequency in Hertz\n",
+    "C=3*10**-8               #Capacitance in Farad\n",
+    "V=10                     #Voltage\n",
+    "\n",
+    "#Calculation \n",
+    "Xc=1/(2*math.pi*f*C)                #Reactance\n",
+    "a=((10**4)**2)+(5.3*10**3)**2\n",
+    "I=math.sqrt((V**2)/a)               #Current in Amp\n",
+    "Vr=I*R                            #Voltage\n",
+    "Vc=Xc*I                            #Voltage\n",
+    "phi=math.atan(Vc/Vr)       #Phase Angle in radians\n",
+    "\n",
+    "#Result\n",
+    "print'(a) Current, I = %d uA'%round(I*10**6)\n",
+    "print'(b) V = %.2f V'%(-phi*180/math.pi)         #phase angle in degree"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 15.7, Page 317"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 49,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Z = 200 + j 62 Ohms\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "\n",
+    "#Initialisation\n",
+    "I=5                   #sinusoidal Current\n",
+    "R=200                  #Resistance in Ohm\n",
+    "f=50                  #Frequency in Hertz\n",
+    "L=400*10**-3               #Inductancec in Henry\n",
+    "C=50*10**-6               #Capacitance in Henry \n",
+    "\n",
+    "#Calculation \n",
+    "Vr=I*R                         #Voltage across resistor\n",
+    "Xl=2*math.pi*f*L               #Reactance\n",
+    "Xc=1/(2*math.pi*f*C)                #Reactance\n",
+    "i=Xl-Xc\n",
+    "\n",
+    "#Result\n",
+    "print'Z = %d + j %d Ohms'%(R,i)\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 15.8, Page 320"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 32,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "vo = 12.4 < 29.7\n",
+      "Therefore\n",
+      "vo = 12.4 sin(500 t + 29.7)\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "from numpy import ones\n",
+    "\n",
+    "#Initialisation\n",
+    "R1=5                  #Resistance in Ohm\n",
+    "R2=50                  #Resistance in Ohm\n",
+    "w=500                  #rad/s\n",
+    "L=50*10**-3               #Inductancec in Henry\n",
+    "C=200*10**-6               #Capacitance in Henry \n",
+    "v=10\n",
+    "\n",
+    "#Calculation\n",
+    "Xc=1/(w*C)                              #Reactance\n",
+    "Z1=complex(R1,-Xc)                      #taking in complex form\n",
+    "a=(R2*w**2*L**2)/(R2**2+(w**2*L**2))\n",
+    "b=(R2**2*w*L)/(R2**2+(w**2*L**2))\n",
+    "Z2=complex(a,b)                         #taking in complex form\n",
+    "Z3=(Z1+Z2)\n",
+    "Z=Z2/Z3\n",
+    "r=math.sqrt((Z.real)**2 + (Z.imag)**2)   #converting in polar (absolute)\n",
+    "r1=v*r \n",
+    "phi=math.atan(Z.imag/Z.real)             #converting in polar (phase)\n",
+    "\n",
+    "#Result\n",
+    "print'vo = %.1f < %.1f'%(r1,(phi*180/math.pi))\n",
+    "print'Therefore'\n",
+    "print'vo = %.1f sin(%d t + %.1f)'%(r1,w,(phi*180/math.pi))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python [Root]",
+   "language": "python",
+   "name": "Python [Root]"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.12"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}