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, 121 insertions, 0 deletions

diff --git a/Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter20.ipynb b/Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter20.ipynb
new file mode 100644
index 00000000..960e2bde
--- /dev/null
+++ b/Electrical_and_Electronic_Systems_by_Neil_Storey/Chapter20.ipynb
@@ -0,0 +1,121 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 20: Field-effect Transistors"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 20.1, Page"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Small signal voltage gain = -4 \n",
+      "Low frequency cut off = 0.16 Hz\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "\n",
+    "#Introduction\n",
+    "gm=2*10**-3\n",
+    "rd=2*10**3                         #resistance in ohm\n",
+    "C=10**-6                           #capacitance in farad\n",
+    "R=10**6                            #resistance in ohm\n",
+    "\n",
+    "\n",
+    "#Calculation\n",
+    "G=-gm*rd                             #Small signal voltage gain\n",
+    "fc=1/(2*math.pi*C*R)                 #frequency in Hz\n",
+    "\n",
+    "#Result\n",
+    "print'Small signal voltage gain = %d '%G\n",
+    "print'Low frequency cut off = %.2f Hz'%fc"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 20.2, Page"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Rd = 0.67 kOhm\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math\n",
+    "\n",
+    "#Introduction\n",
+    "idd=4*10**-3                        #current in ampere\n",
+    "vo=8                               #voltage\n",
+    "vdd=12                             #voltage\n",
+    "\n",
+    "#Calculation\n",
+    "Rd=vo*(vdd-idd)**-1\n",
+    "\n",
+    "#Result\n",
+    "print'Rd = %.2f kOhm'%Rd          #wrong answer in textbook"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "anaconda-cloud": {},
+  "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
+}