Silicon ChipContents - February 1992 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Service with a smile is truly a pleasure
  4. Feature: The Mobile Telephone Revolution by Garry Cratt & Greg Swain
  5. Vintage Radio: Console receivers from the 1930s by John Hill
  6. Project: Compact Digital Voice Recorder by Leo Simpson
  7. Project: Build A Stereo Power Amplifier by Leo Simpson & Bob Flynn
  8. Project: 12VDC/240VAC 40-Watt Inverter by John Clarke
  9. Feature: Computer Bits by Jennifer Bonnitcha
  10. Serviceman's Log: Some sets go on forever by The TV Serviceman
  11. Feature: Designing A Speed Controller For Electric Models by Bob Young
  12. Feature: Amateur Radio by Garry Cratt, VK2YBX
  13. Project: Adjustable 0-45V 8A Power Supply, Pt.2 by John Clarke
  14. Back Issues
  15. Order Form
  16. Market Centre
  17. Advertising Index
  18. Outer Back Cover

This is only a preview of the February 1992 issue of Silicon Chip.

You can view 45 of the 96 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 "Build A Stereo Power Amplifier":
  • Silicon Chip article scan, February 1992 - Plastic Power Twin 50W Amplifier (AUD $10.00)
Articles in this series:
  • Computer Bits (July 1989)
  • Computer Bits (August 1989)
  • Computer Bits (September 1989)
  • Computer Bits (October 1989)
  • Computer Bits (November 1989)
  • Computer Bits (January 1990)
  • Computer Bits (April 1990)
  • Computer Bits (October 1990)
  • Computer Bits (November 1990)
  • Computer Bits (December 1990)
  • Computer Bits (January 1991)
  • Computer Bits (February 1991)
  • Computer Bits (March 1991)
  • Computer Bits (April 1991)
  • Computer Bits (May 1991)
  • Computer Bits (June 1991)
  • Computer Bits (July 1991)
  • Computer Bits (August 1991)
  • Computer Bits (September 1991)
  • Computer Bits (October 1991)
  • Computer Bits (November 1991)
  • Computer Bits (December 1991)
  • Computer Bits (January 1992)
  • Computer Bits (February 1992)
  • Computer Bits (March 1992)
  • Computer Bits (May 1992)
  • Computer Bits (June 1992)
  • Computer Bits (July 1992)
  • Computer Bits (September 1992)
  • Computer Bits (October 1992)
  • Computer Bits (November 1992)
  • Computer Bits (December 1992)
  • Computer Bits (February 1993)
  • Computer Bits (April 1993)
  • Computer Bits (May 1993)
  • Computer Bits (June 1993)
  • Computer Bits (October 1993)
  • Computer Bits (March 1994)
  • Computer Bits (May 1994)
  • Computer Bits (June 1994)
  • Computer Bits (July 1994)
  • Computer Bits (October 1994)
  • Computer Bits (November 1994)
  • Computer Bits (December 1994)
  • Computer Bits (January 1995)
  • Computer Bits (February 1995)
  • Computer Bits (March 1995)
  • Computer Bits (April 1995)
  • CMOS Memory Settings - What To Do When The Battery Goes Flat (May 1995)
  • Computer Bits (July 1995)
  • Computer Bits (September 1995)
  • Computer Bits: Connecting To The Internet With WIndows 95 (October 1995)
  • Computer Bits (December 1995)
  • Computer Bits (January 1996)
  • Computer Bits (February 1996)
  • Computer Bits (March 1996)
  • Computer Bits (May 1996)
  • Computer Bits (June 1996)
  • Computer Bits (July 1996)
  • Computer Bits (August 1996)
  • Computer Bits (January 1997)
  • Computer Bits (April 1997)
  • Windows 95: The Hardware That's Required (May 1997)
  • Turning Up Your Hard Disc Drive (June 1997)
  • Computer Bits (July 1997)
  • Computer Bits: The Ins & Outs Of Sound Cards (August 1997)
  • Computer Bits (September 1997)
  • Computer Bits (October 1997)
  • Computer Bits (November 1997)
  • Computer Bits (April 1998)
  • Computer Bits (June 1998)
  • Computer Bits (July 1998)
  • Computer Bits (November 1998)
  • Computer Bits (December 1998)
  • Control Your World Using Linux (July 2011)
Articles in this series:
  • Remote Control (December 1991)
  • Remote Control (January 1992)
  • Designing A Speed Controller For Electric Models (February 1992)
  • Remote Control (March 1992)
Articles in this series:
  • Amateur Radio (November 1987)
  • Amateur Radio (December 1987)
  • Amateur Radio (February 1988)
  • Amateur Radio (March 1988)
  • Amateur Radio (April 1988)
  • Amateur Radio (May 1988)
  • Amateur Radio (June 1988)
  • Amateur Radio (July 1988)
  • Amateur Radio (August 1988)
  • Amateur Radio (September 1988)
  • Amateur Radio (October 1988)
  • Amateur Radio (November 1988)
  • Amateur Radio (December 1988)
  • Amateur Radio (January 1989)
  • Amateur Radio (April 1989)
  • Amateur Radio (May 1989)
  • Amateur Radio (June 1989)
  • Amateur Radio (July 1989)
  • Amateur Radio (August 1989)
  • Amateur Radio (September 1989)
  • Amateur Radio (October 1989)
  • Amateur Radio (November 1989)
  • Amateur Radio (December 1989)
  • Amateur Radio (February 1990)
  • Amateur Radio (March 1990)
  • Amateur Radio (April 1990)
  • Amateur Radio (May 1990)
  • Amateur Radio (June 1990)
  • Amateur Radio (July 1990)
  • The "Tube" vs. The Microchip (August 1990)
  • Amateur Radio (September 1990)
  • Amateur Radio (October 1990)
  • Amateur Radio (November 1990)
  • Amateur Radio (December 1990)
  • Amateur Radio (January 1991)
  • Amateur Radio (February 1991)
  • Amateur Radio (March 1991)
  • Amateur Radio (April 1991)
  • Amateur Radio (May 1991)
  • Amateur Radio (June 1991)
  • Amateur Radio (July 1991)
  • Amateur Radio (August 1991)
  • Amateur Radio (September 1991)
  • Amateur Radio (October 1991)
  • Amateur Radio (November 1991)
  • Amateur Radio (January 1992)
  • Amateur Radio (February 1992)
  • Amateur Radio (March 1992)
  • Amateur Radio (July 1992)
  • Amateur Radio (August 1992)
  • Amateur Radio (September 1992)
  • Amateur Radio (October 1992)
  • Amateur Radio (November 1992)
  • Amateur Radio (January 1993)
  • Amateur Radio (March 1993)
  • Amateur Radio (May 1993)
  • Amateur Radio (June 1993)
  • Amateur Radio (July 1993)
  • Amateur Radio (August 1993)
  • Amateur Radio (September 1993)
  • Amateur Radio (October 1993)
  • Amateur Radio (December 1993)
  • Amateur Radio (February 1994)
  • Amateur Radio (March 1994)
  • Amateur Radio (May 1994)
  • Amateur Radio (June 1994)
  • Amateur Radio (September 1994)
  • Amateur Radio (December 1994)
  • Amateur Radio (January 1995)
  • CB Radio Can Now Transmit Data (March 2001)
  • What's On Offer In "Walkie Talkies" (March 2001)
  • Stressless Wireless (October 2004)
  • “Degen” Synthesised HF Communications Receiver (January 2007)
  • WiNRADiO: Marrying A Radio Receiver To A PC (January 2007)
  • PICAXE-08M 433MHz Data Transceiver (October 2008)
  • Half-Duplex With HopeRF’s HM-TR UHF Transceivers (April 2009)
  • Dorji 433MHz Wireless Data Modules (January 2012)
Articles in this series:
  • Adjustable 0-45V 8A Power Supply, Pt.1 (January 1992)
  • Adjustable 0-45V 8A Power Supply, Pt.2 (February 1992)
February 1992 FEATURES THIS COMPACT digital voice recorder uses a 60-pin LSI chip, four RAM chips & not much else. It can record several minutes of speech in up to four separate messages. Details page 24. 6 The Mobile Telephone Revolution by Garry Cratt & Greg Swain Changing the way we talk to each other 69 Designing A Speed Controller For Electric Models by Bob Young The overriding consideration is milliohms PROJECTS TO BUILD 24 Compact Digital Voice Recorder by Leo Simpson New design stores up to four separate messages SAY GOODBYE TO tin lid transistors. This new stereo power module uses eight big plastic Darlington transistors & can deliver 55W per channel into 8-ohm loads. Construction starts on page 34. 34 Build A Stereo Power Amplifier by Leo Simpson & Bob Flynn Delivers 55W per channel into 8-ohm loads 42 12VDC/240VAC 40-Watt Inverter by John Clarke Lets you power small appliances from a 12V car battery 76 Adjustable 0-45V 8A Power Supply, Pt.2 by John Clarke Construction & adjustment details SPECIAL COLUMNS 18 Vintage Radio by John Hill Console receivers from the 1930s 50 Computer Bits by Jennifer Bonnitcha More things to do when things go wrong YOU CAN USE THIS 40W inverter as part of a small solar power installation or to operate fax machines or nicad battery chargers from a 12V car battery. See page 42. 56 Serviceman's Log by the TV Serviceman Some sets go on for ever 72 Amateur Radio by Garry Cratt A look at trunked radio communications DEPARTMENTS Publisher's Letter Mailbag Circuit Notebook Bookshelf 52 Product Showcase 62 Computer Update 2 4 13 33 90 Ask Silicon Chip 93 Subscription Page 94 Market Centre 96 Advertising Index 92 Notes & Errata WHAT WOKE THE Serviceman in the wee small hours one morning? Find out by turning to page 56. FEBAUARY1992 1