Silicon ChipThe story of electrical energy - July 1990 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: The story of electrical energy
  4. Vintage Radio: How to solve unusual problems by John Hill
  5. Review: AR950 100-Channel Scanner by Garry Cratt
  6. Project: Digital Sine/Square Wave Generator; Pt.1 by John Clarke
  7. Project: Alarm Keypad & Combination Lock by Greg Swain
  8. Project: Build An Elegant Electronic Die by Darren Yates
  9. Serviceman's Log: The dangers of a quick fix by The TV Serviceman
  10. Back Issues
  11. Feature: The Story Of Electrical Energy by Bryan Maher
  12. Feature: Waveform Generation Using A PC, Pt.4 by Steve Payor
  13. Feature: Computer Bits by Jennifer Bonnitcha
  14. Project: Low Cost Dual Power Supply by John Crichton
  15. Feature: Amateur Radio by Garry Cratt, VK2YBX
  16. Market Centre
  17. Advertising Index
  18. Subscriptions
  19. Outer Back Cover

This is only a preview of the July 1990 issue of Silicon Chip.

You can view 49 of the 104 pages in the full issue, including the advertisments.

For full access, purchase the issue for $10.00 or subscribe for access to the latest issues.

Items relevant to "Digital Sine/Square Wave Generator; Pt.1":
  • Digital Sine/Square Wave Generator PCB patterns [04108901/2] (Free)
Articles in this series:
  • Digital Sine/Square Wave Generator; Pt.1 (July 1990)
  • Digital Sine/Square Wave Generator; Pt.1 (July 1990)
  • Digital Sine/Square Wave Generator; Pt.2 (August 1990)
  • Digital Sine/Square Wave Generator; Pt.2 (August 1990)
Articles in this series:
  • The Technology Letters, Pt.2 (January 1989)
  • The Technology Letters, Pt.2 (January 1989)
  • The Story Of Electrical Energy (July 1990)
  • The Story Of Electrical Energy (July 1990)
  • The Story Of Electrical Energy; Pt.2 (August 1990)
  • The Story Of Electrical Energy; Pt.2 (August 1990)
  • The Story Of Electrical Energy; Pt.3 (September 1990)
  • The Story Of Electrical Energy; Pt.3 (September 1990)
  • The Story Of Electrical Energy; Pt.4 (October 1990)
  • The Story Of Electrical Energy; Pt.4 (October 1990)
  • The Story Of Electrical Energy; Pt.5 (November 1990)
  • The Story Of Electrical Energy; Pt.5 (November 1990)
  • The Story Of Electrical Energy; Pt.6 (December 1990)
  • The Story Of Electrical Energy; Pt.6 (December 1990)
  • The Story Of Electrical Energy; Pt.7 (January 1991)
  • The Story Of Electrical Energy; Pt.7 (January 1991)
  • The Story Of Electrical Energy; Pt.8 (February 1991)
  • The Story Of Electrical Energy; Pt.8 (February 1991)
  • The Story Of Electrical Energy; Pt.9 (March 1991)
  • The Story Of Electrical Energy; Pt.9 (March 1991)
  • The Story Of Electrical Energy; Pt.10 (May 1991)
  • The Story Of Electrical Energy; Pt.10 (May 1991)
  • The Story Of Electrical Energy; Pt.11 (July 1991)
  • The Story Of Electrical Energy; Pt.11 (July 1991)
  • The Story Of Electrical Energy; Pt.12 (August 1991)
  • The Story Of Electrical Energy; Pt.12 (August 1991)
  • The Story Of Electrical Energy; Pt.13 (September 1991)
  • The Story Of Electrical Energy; Pt.13 (September 1991)
  • The Story Of Electrical Energy; Pt.14 (October 1991)
  • The Story Of Electrical Energy; Pt.14 (October 1991)
  • The Story Of Electrical Energy; Pt.15 (November 1991)
  • The Story Of Electrical Energy; Pt.15 (November 1991)
  • The Story Of Electrical Energy; Pt.16 (December 1991)
  • The Story Of Electrical Energy; Pt.16 (December 1991)
  • The Story Of Electrical Energy; Pt.17 (January 1992)
  • The Story Of Electrical Energy; Pt.17 (January 1992)
  • The Story Of Electrical Energy; Pt.18 (March 1992)
  • The Story Of Electrical Energy; Pt.18 (March 1992)
  • The Story Of Electrical Energy; Pt.19 (August 1992)
  • The Story Of Electrical Energy; Pt.19 (August 1992)
  • The Story of Electrical Energy; Pt.20 (September 1992)
  • The Story of Electrical Energy; Pt.20 (September 1992)
  • The Story Of Electrical Energy; Pt.21 (November 1992)
  • The Story Of Electrical Energy; Pt.21 (November 1992)
  • The Story Of Electrical Energy; Pt.22 (January 1993)
  • The Story Of Electrical Energy; Pt.22 (January 1993)
  • The Story of Electrical Energy (April 1993)
  • The Story of Electrical Energy (April 1993)
  • The Story Of Electrical Energy; Pt.24 (May 1993)
  • The Story Of Electrical Energy; Pt.24 (May 1993)
  • The Story Of Electrical Energy; Pt.24 (June 1993)
  • The Story Of Electrical Energy; Pt.24 (June 1993)
Articles in this series:
  • Computer Bits (February 1990)
  • Computer Bits (February 1990)
  • Computer Bits (March 1990)
  • Computer Bits (March 1990)
  • Waveform Generation Using A PC, Pt.3 (May 1990)
  • Waveform Generation Using A PC, Pt.3 (May 1990)
  • Waveform Generation Using A PC, Pt.4 (July 1990)
  • Waveform Generation Using A PC, Pt.4 (July 1990)
Articles in this series:
  • Computer Bits (May 1990)
  • Computer Bits (May 1990)
  • Computer Bits (June 1990)
  • Computer Bits (June 1990)
  • Computer Bits (July 1990)
  • Computer Bits (July 1990)
  • Computer Bits (August 1990)
  • Computer Bits (August 1990)
  • Computer Bits (September 1990)
  • Computer Bits (September 1990)
Articles in this series:
  • Amateur Radio (November 1987)
  • Amateur Radio (November 1987)
  • Amateur Radio (December 1987)
  • Amateur Radio (December 1987)
  • Amateur Radio (February 1988)
  • Amateur Radio (February 1988)
  • Amateur Radio (March 1988)
  • Amateur Radio (March 1988)
  • Amateur Radio (April 1988)
  • Amateur Radio (April 1988)
  • Amateur Radio (May 1988)
  • Amateur Radio (May 1988)
  • Amateur Radio (June 1988)
  • Amateur Radio (June 1988)
  • Amateur Radio (July 1988)
  • Amateur Radio (July 1988)
  • Amateur Radio (August 1988)
  • Amateur Radio (August 1988)
  • Amateur Radio (September 1988)
  • Amateur Radio (September 1988)
  • Amateur Radio (October 1988)
  • Amateur Radio (October 1988)
  • Amateur Radio (November 1988)
  • Amateur Radio (November 1988)
  • Amateur Radio (December 1988)
  • Amateur Radio (December 1988)
  • Amateur Radio (January 1989)
  • Amateur Radio (January 1989)
  • Amateur Radio (April 1989)
  • Amateur Radio (April 1989)
  • Amateur Radio (May 1989)
  • Amateur Radio (May 1989)
  • Amateur Radio (June 1989)
  • Amateur Radio (June 1989)
  • Amateur Radio (July 1989)
  • Amateur Radio (July 1989)
  • Amateur Radio (August 1989)
  • Amateur Radio (August 1989)
  • Amateur Radio (September 1989)
  • Amateur Radio (September 1989)
  • Amateur Radio (October 1989)
  • Amateur Radio (October 1989)
  • Amateur Radio (November 1989)
  • Amateur Radio (November 1989)
  • Amateur Radio (December 1989)
  • Amateur Radio (December 1989)
  • Amateur Radio (February 1990)
  • Amateur Radio (February 1990)
  • Amateur Radio (March 1990)
  • Amateur Radio (March 1990)
  • Amateur Radio (April 1990)
  • Amateur Radio (April 1990)
  • Amateur Radio (May 1990)
  • Amateur Radio (May 1990)
  • Amateur Radio (June 1990)
  • Amateur Radio (June 1990)
  • Amateur Radio (July 1990)
  • Amateur Radio (July 1990)
  • The "Tube" vs. The Microchip (August 1990)
  • The "Tube" vs. The Microchip (August 1990)
  • Amateur Radio (September 1990)
  • Amateur Radio (September 1990)
  • Amateur Radio (October 1990)
  • Amateur Radio (October 1990)
  • Amateur Radio (November 1990)
  • Amateur Radio (November 1990)
  • Amateur Radio (December 1990)
  • Amateur Radio (December 1990)
  • Amateur Radio (January 1991)
  • Amateur Radio (January 1991)
  • Amateur Radio (February 1991)
  • Amateur Radio (February 1991)
  • Amateur Radio (March 1991)
  • Amateur Radio (March 1991)
  • Amateur Radio (April 1991)
  • Amateur Radio (April 1991)
  • Amateur Radio (May 1991)
  • Amateur Radio (May 1991)
  • Amateur Radio (June 1991)
  • Amateur Radio (June 1991)
  • Amateur Radio (July 1991)
  • Amateur Radio (July 1991)
  • Amateur Radio (August 1991)
  • Amateur Radio (August 1991)
  • Amateur Radio (September 1991)
  • Amateur Radio (September 1991)
  • Amateur Radio (October 1991)
  • Amateur Radio (October 1991)
  • Amateur Radio (November 1991)
  • Amateur Radio (November 1991)
  • Amateur Radio (January 1992)
  • Amateur Radio (January 1992)
  • Amateur Radio (February 1992)
  • Amateur Radio (February 1992)
  • Amateur Radio (March 1992)
  • Amateur Radio (March 1992)
  • Amateur Radio (July 1992)
  • Amateur Radio (July 1992)
  • Amateur Radio (August 1992)
  • Amateur Radio (August 1992)
  • Amateur Radio (September 1992)
  • Amateur Radio (September 1992)
  • Amateur Radio (October 1992)
  • Amateur Radio (October 1992)
  • Amateur Radio (November 1992)
  • Amateur Radio (November 1992)
  • Amateur Radio (January 1993)
  • Amateur Radio (January 1993)
  • Amateur Radio (March 1993)
  • Amateur Radio (March 1993)
  • Amateur Radio (May 1993)
  • Amateur Radio (May 1993)
  • Amateur Radio (June 1993)
  • Amateur Radio (June 1993)
  • Amateur Radio (July 1993)
  • Amateur Radio (July 1993)
  • Amateur Radio (August 1993)
  • Amateur Radio (August 1993)
  • Amateur Radio (September 1993)
  • Amateur Radio (September 1993)
  • Amateur Radio (October 1993)
  • Amateur Radio (October 1993)
  • Amateur Radio (December 1993)
  • Amateur Radio (December 1993)
  • Amateur Radio (February 1994)
  • Amateur Radio (February 1994)
  • Amateur Radio (March 1994)
  • Amateur Radio (March 1994)
  • Amateur Radio (May 1994)
  • Amateur Radio (May 1994)
  • Amateur Radio (June 1994)
  • Amateur Radio (June 1994)
  • Amateur Radio (September 1994)
  • Amateur Radio (September 1994)
  • Amateur Radio (December 1994)
  • Amateur Radio (December 1994)
  • Amateur Radio (January 1995)
  • Amateur Radio (January 1995)
  • CB Radio Can Now Transmit Data (March 2001)
  • CB Radio Can Now Transmit Data (March 2001)
  • What's On Offer In "Walkie Talkies" (March 2001)
  • What's On Offer In "Walkie Talkies" (March 2001)
  • Stressless Wireless (October 2004)
  • Stressless Wireless (October 2004)
  • WiNRADiO: Marrying A Radio Receiver To A PC (January 2007)
  • WiNRADiO: Marrying A Radio Receiver To A PC (January 2007)
  • “Degen” Synthesised HF Communications Receiver (January 2007)
  • “Degen” Synthesised HF Communications Receiver (January 2007)
  • PICAXE-08M 433MHz Data Transceiver (October 2008)
  • PICAXE-08M 433MHz Data Transceiver (October 2008)
  • Half-Duplex With HopeRF’s HM-TR UHF Transceivers (April 2009)
  • Half-Duplex With HopeRF’s HM-TR UHF Transceivers (April 2009)
  • Dorji 433MHz Wireless Data Modules (January 2012)
  • Dorji 433MHz Wireless Data Modules (January 2012)
Publisher & Editor-In-Chief Leo Simpson, B.Bus. Editor Greg Swain, B.Sc.{Hons.) Technical Staff John Clarke, B.E.{Elec.) Robert Flynn PUBLISHER'S LETTER Advertising Manager Paul Buchtmann (02) 979 5644 Mobile: 018 28 5532 Victorian Representative McDonald Woodside & Associates Pty Ltd, 143a Como Parade East, Parkdale, Victoria 3194. Phone (03) 587 5155. Contact: Cameron McDonald. Regular Contributors Jennifer Bonnitcha, B.A. Garry Cratt, VK2YBX John Hill Jim Lawler, MTETIA Bryan Maher, M.E., B.Sc. Jim Yalden, VK2YGY Darren Yates Bob Young Photography Bob Donaldson Editorial Advisory Panel Philip Watson, MIREE, VK2ZPW Norman Marks Steve Payor, B.Sc., B.E. SILICON CHIP is published 1 2 times a year by Silicon Chip Publications Pty Ltd. All material copyright {c). No part of the contents of this publication may be reproduced without prior written consent of the publisher. Typesetting: Magazine Printers Pty Ltd, Rozelle, NSW 2039. Printing: Macquarie Print, Dubbo, NSW 2830 . Distribution: Network Distribution Company . Subscription rates: $42 per year in Australia. For overseas rates, refer to the subscription page in this issue. Liability: Devices or circuits described in SILICON CHIP may be covered by patents . SILICON CHIP disclaims any liability for the infringement of such patents by the manufacturing or selling of any such equipment. Editorial & advertising offices: Unit 39, 5 Ponderosa Pde, Warriewood, NSW 2102. Postal address: PO Box 139, Collaroy Beach, NSW 2097. Phone (02) 979 5644. Fax (02) 979 6503 . ISSN 1030-2662 2 SILICON CHIP The story of electrical energy This month, we introduce a new series entitled "The Story of Electrical Energy" which will tell all about the generation and major uses of electrical energy. Written by Bryan Maher, we hope it will be just as popular as his previous long-running series, "The Evolution of Electric Railways", which concluded in the March 1990 issue. When that series started, in our very first issue, there' was some critical comment from readers who did not see why such material should appear in an electronics magazine. This was probably because the initial chapters largely dwelt on steam locomotives. As the series developed though, readers began to see just why we had elected to run it - because there is a great deal of technology in electric transportation that you just don't get to read about anywhere else. Towards the end of the series, we had readers commenting that they really looked forward to reading each chapter even though they were not interested in trains! Some were even beginning to worry that they might be becoming train buffs! Heaven forbid. What's wrong with train buffs, anyway? We have high hopes for this new series on electrical energy and we think that readers will find it just as engrossing as the story of electric railways. Bryan Maher is, above anything else, an enthusiastic storyteller and his extensive engineering background gives each article solid credibility. As the person who usually sub-edits this material, I look forward to each chapter too. Not just because I enjoy reading about the subject matter but because I also enjoy delving into our library to check the technical material. As the series was being planned, I wondered why it had not really been done before, either in a book or in magazines. When you think about it, there are any number of articles, books and magazines devoted to the subject of electronics which, for the most part, is engineering on a miniature scale. Silicon chips are the prime examples of this. By contrast, the generation and transmission of electrical energy is engineering on a truly vast scale and with far reaching effects and consequences in the lives of all of us. Without cheap electrical energy, how would we function today? I look forward to Bryan Maher's Story of Electrical Energy and hope that you enjoy reading about this fascinating subject. Leo Simpson OUR NEW ADDRESS: Unit 39, 5 Ponderosa Pde, Warriewood, NSW 2102. Phone (02) 979 5644. Fax (02) 979 5644. Our postal address remains: PO Box 139, Collaroy Beach, NSW 2097.