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Telephone Projects for the Evil Genius Evil Genius Series Bike, Scooter, and Chopper Projects for the Evil Genius Bionics for the Evil Genius: 25 Build-It-Yourself Projects Electronic Circuits for the Evil Genius: 57 Lessons with Projects Electronic Gadgets for the Evil Genius: 28 Build-It-Yourself Projects Electronic Games for the Evil Genius Electronic Sensors for the Evil Genius: 54 Electrifying Projects 50 Awesome Auto Projects for the Evil Genius 50 Model Rocket Projects for the Evil Genius 51 High-Tech Practical Jokes for the Evil Genius Fuel Cell Projects for the Evil Genius Mechatronics for the Evil Genius: 25 Build-It-Yourself Projects MORE Electronic Gadgets for the Evil Genius: 40 NEW Build-It-Yourself Projects 101 Outer Space Projects for the Evil Genius 101 Spy Gadgets for the Evil Genius 123 PIC® Microcontroller Experiments for the Evil Genius 123 Robotics Experiments for the Evil Genius PC Mods for the Evil Genius Programming Video Games for the Evil Genius Solar Energy Projects for the Evil Genius Telephone Projects for the Evil Genius 22 Radio and Receiver Projects for the Evil Genius 25 Home Automation Projects for the Evil Genius Telephone Projects for the Evil Genius TOM PETRUZZELLIS New York Chicago San Francisco Lisbon London Madrid Mexico City Milan New Delhi San Juan Seoul Singapore Sydney Toronto Copyright © 2009 by The McGraw-Hill Companies, Inc. All rights reserved. Manufactured in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher. 0-07-154845-9 The material in this eBook also appears in the print version of this title: 0-07-154844-0. All trademarks are trademarks of their respective owners. Rather than put a trademark symbol after every occurrence of a trademarked name, we use names in an editorial fashion only, and to the benefit of the trademark owner, with no intention of infringement of the trademark. Where such desig- nations appear in this book, they have been printed with initial caps. McGraw-Hill eBooks are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training programs. For more information, please contact George Hoare, Special Sales, at [email protected] or (212) 904-4069. TERMS OF USE This is a copyrighted work and The McGraw-Hill Companies, Inc. (“McGraw-Hill”) and its licensors reserve all rights in and to the work. Use of this work is subject to these terms. Except as permitted under the Copyright Act of 1976 and the right to store and retrieve one copy of the work, you may not decompile, disassemble, reverse engineer, reproduce, modify, create derivative works based upon, transmit, distribute, disseminate, sell, publish or sublicense the work or any part of it without McGraw-Hill’s prior consent. You may use the work for your own noncommercial and personal use; any other use of the work is strictly prohibited. Your right to use the work may be terminated if you fail to comply with these terms. THE WORK IS PROVIDED “AS IS.” McGRAW-HILL AND ITS LICENSORS MAKE NO GUARANTEES OR WARRANTIES AS TO THE ACCURACY, ADEQUACY OR COMPLETENESS OF OR RESULTS TO BE OBTAINED FROM USING THE WORK, INCLUDING ANY INFORMATION THAT CAN BE ACCESSED THROUGH THE WORK VIA HYPERLINK OR OTHERWISE, AND EXPRESSLY DISCLAIM ANY WARRANTY, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY OR FIT- NESS FOR A PARTICULAR PURPOSE. McGraw-Hill and its licensors do not warrant or guarantee that the functions contained in the work will meet your requirements or that its operation will be uninterrupted or error free. Neither McGraw-Hill nor its licensors shall be liable to you or anyone else for any inaccuracy, error or omission, regardless of cause, in the work or for any damages resulting therefrom. McGraw-Hill has no responsibili- ty for the content of any information accessed through the work. Under no circumstances shall McGraw-Hill and/or its licensors be liable for any indirect, incidental, special, punitive, consequential or similar damages that result from the use of or inability to use the work, even if any of them has been advised of the possibility of such damages. This limitation of liability shall apply to any claim or cause whatsoever whether such claim or cause arises in contract, tort or otherwise. DOI: 10.1036/0071548440 This book is dedicated to my first grandson Giovanni. May he dream big dreams and see them realized. Wishing him a long, interesting, and enjoyable life! About the Author Tom Petruzzellis is an electronics engineer with 30 years’ experience, currently working with the geophysical field equipment department at the State University of New York-Binghamton. He has written extensively for industry publications such as Electronics Now and Modern Electronics, and is the author of numerous McGraw-Hill bestsellers, including Electronics Sensors for the Evil Genius. vi Copyright © 2009 by The McGraw-Hill Companies, Inc. Click here for terms of use. For more information about this title, click here Contents Introduction xi Phone Line-in-Use Relay 131 Controller Acknowledgments xiv Single Phone Line Status Light 134 Two-Line Phone Status Indicator 137 1 Telephone History 1 Smart Phone Light 141 2 How the Telephone Works 6 Telephone Line Vigilant 145 3 Identifying Electronic Components 13 15 Telephone and Phone Line Testers 150 Simple Telephone Line Tester 151 4 Reading Schematics 20 Off-Line Telephone Tester 153 5 Electronic Parts Installation 28 Telephone Line Tester 157 and Soldering Telephone Line Simulator 159 6 Telephone Privacy Guard 39 16 FM Telephone Transmitter 166 7 Modem Protector 42 17 Telephone Project 173 8 Telephone Amplifiers and Projects 46 18 Talking/Musical Telephone Ringer 187 Magnetic Phone Pickup 47 19 Telephone Tollsaver 195 Direct Connect 52 20 Infinity Bug/Transmitter Project 204 9 Phone Recorder Switch Project 55 21 Radio Phone Patch 213 10 Telephone Conferencer Unit 61 22 Telephone Phone Intercom 221 11 The Frustrator 67 23 Speaker-Phone Project 231 12 Hold Circuits and Projects 75 Telephone Hold and Line-in-Use 78 24 Telephone Scrambler 241 Basic Music-on-Hold 80 25 Telephone Tattletale 251 Universal Hold Circuit 84 Automatic Music-on-Hold 89 26 DTMF Telephone Controller 261 Project 13 Telephone Ringer Projects 98 Silent Cellular Phone Ringer 100 27 The BASIC STAMP Microcontroller 275 Remote Telephone Ringer 105 28 DTMF Touch-Tone Generator/Decoder 282 Telephone Ring Detector 111 Display Wireless Telephone Ringer 117 29 Caller-ID/Blocker Project 294 Telephone Ring Generator 126 30 Page-Alert 311 14 Phone Line Status Circuits and 121 Alarm Switch/Sensor Module 321 Projects Temperature/Voltage Level 323 Phone In-Use Indicator 124 Module Cut Phone Line Detector 128 vii 31 Tele-Alert Project 328 Appendix: Electronic Parts Suppliers 364 Motion Module 339 Index 367 Listen-in Module 344 32 Remote Temperature Monitor 348 Contents viii Introduction Since its inception in 1876, the telephone has This book will appeal to both electronics neophytes captured the imagination of people around the and seasoned circuit builders of all ages. world. From its simple origins, the telephone has Once you open up this book you will realize that evolved from the humble device it once was to the the common telephone and telephone lines can be modern cell phone or satellite phone. The used in a variety of ways to support many different telephone has fundamentally and instantaneously types of projects that you perhaps never knew changed the human race’s ability to communicate existed. You will explore the basics of the over long distances. Today, not only can we telephone, and learn how to build an electronic communicate via the human voice but we can telephone and a telephone modem/line protector, rapidly send scientific and health data, pictures, as well as remote ringer circuits, line use and information between any two people or indicators, a telephone intercom, speaker-phone, a organizations on earth in just a few seconds by telephone transmitter, and a telephone listening picking up the phone and dialing the party at the device, just to name a few projects. other end. The development of the telephone has The book is broken down into 32 chapters. progressed at such a rapid rate in the last 50 years Chapter 1 discusses a bit of telephone history, alone that it is truly amazing what can be done while Chapter 2 describes how a conventional with the telephone in our modern lives; telephone functions. Chapter 3 shows readers how and it is now mostly taken for granted. to identify components; this chapter is particularly Our new book titled Telephone Projects for the useful for newcomers to electronics or for younger Evil Genius is a fun and informative project book readers. Chapter 4 delves into reading schematics, which we hope will spark your imagination and and you will learn the difference between a creative abilities. If you are interested in learning schematic and a pictorial diagram, as well as about the history of the telephone, and how a how components are connected and work with telephone operates, or if you want to know how a one another. Next, Chapter 5 shows the reader telephone remote control functions and how to how to install components on circuit boards and remotely control things around your home or how to solder. Every electronic hobbyist should office, or perhaps, if you would like to know how know how to solder well before attempting to build a remote telephone listening device, then electronic projects.
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