Silicon ChipMarket Centre - August 1997 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Australia can make those greenhouse reductions
  4. Feature: How Holden's Electronic Control Unit Works; Pt.2 by Julian Edgar
  5. Project: The Bass Barrel Subwoofer by Julian Edgar
  6. Feature: Computer Bits: The Ins & Outs Of Sound Cards by Jason Cole
  7. Project: A 500 Watt Audio Power Amplifier Module by Leo Simpson & Bob Flynn
  8. Order Form
  9. Project: Build A TENS Unit For Pain Relief by John Clarke
  10. Feature: Satellite Watch by Garry Cratt
  11. Project: PC Card For Stepper Motor Control by Rick Walters
  12. Serviceman's Log: Just give it a flamin' good thump by The TV Serviceman
  13. Project: Remote Controlled Gates For Your Home by Phung Mai
  14. Product Showcase
  15. Feature: Radio Control by Bob Young
  16. Vintage Radio: New life for an old Kriesler by John Hill
  17. Back Issues
  18. Notes & Errata: Audio/RF Signal Tracer / 12/24V Motor Speed Controller / Flexible Interface Card for PCs
  19. Book Store
  20. Market Centre

This is only a preview of the August 1997 issue of Silicon Chip.

You can view 34 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.

Articles in this series:
  • How Holden's Electronic Control Unit Works; Pt.1 (July 1997)
  • How Holden's Electronic Control Unit Works; Pt.2 (August 1997)
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)
Items relevant to "A 500 Watt Audio Power Amplifier Module":
  • 500W Audio Power Amplifier PCB pattern (PDF download) [01208971] (Free)
  • 500W Audio Power Amplifier panel artwork (PDF download) (Free)
Articles in this series:
  • A 500 Watt Audio Power Amplifier Module (August 1997)
  • Building The 500W Audio Power Amplifier; Pt.2 (September 1997)
  • Building The 500W Audio Power Amplifier; Pt.3 (October 1997)
Items relevant to "Build A TENS Unit For Pain Relief":
  • TENS Unit PCB pattern (PDF download) [04307971] (Free)
Items relevant to "PC Card For Stepper Motor Control":
  • PC Stepper Motor Drivers DOS software (Free)
  • PC Card for Stepper Motor Control PCB pattern (PDF download) [07108971] (Free)
Articles in this series:
  • Radio Control (August 1997)
  • Radio Control (October 1997)
MARKET CENTRE Cash in your surplus gear. Advertise it here in Silicon Chip. CLASSIFIED ADVERTISING RATES FOR SALE Advertising rates for this page: Classified ads: $10.00 for up to 12 words plus 50 cents for each additional word. Display ads (casual rate): $25 per column centimetre (Max. 10cm). Closing date: five weeks prior to month of sale. C COMPILERS: Ever ything you need to develop C and ASM software for 68HC08, 6809, 68HC11, 68HC12, 68HC16, 8051/52, 8080/85, 8086 or 8096: $140.00 each. Macro Cross Assemblers for these CPUs + 6800/01/03/05 and 6502: $140.00 for the set. Debug monitors: $70 for 6 CPUs. All compilers inc ‘HC12, XASMs and monitors: $480. 8051/52 or 80C320 Simulator (fast): $70. Disassemblers for 12 CPUs only $75. Try the new C-FLEA Virtual Machine for small CPUs, build a “C-Stamp”. Demo disk: FREE. All prices + $5 p&p. GRAN­ TRONICS PTY LTD, PO Box 275, Wentworthville 2145. Ph/Fax (02) 9631 1236 or Internet: http://www.mpx. com.au/~lgrant. To run your classified ad, print it clearly on a separate sheet of paper, fill out the form below & send it with your cheque or credit card details to: Silicon Chip Classifieds, PO Box 139, Collaroy, NSW 2097. Or fax the details to (02) 9979 6503. _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________  Bankcard    Visa Card    Master Card Card No. ✂ Enclosed is my cheque/money order for $­__________ or please debit my Signature­­­­­­­­­­­­__________________________  Card expiry date______/______ Name ______________________________________________________ Street ______________________________________________________ Suburb/town ___________________________ Postcode______________ 94  Silicon Chip MICROCRAFT IS NOW ON THE WEB: Dunfield (DDS) products are now available ex-stock at a new low price; please ask for our catalogue. Micro C, the affordable “C” compiler for embedded applications. Versions for 8051/52, 8086, 8096, 68HC08, 6809, 68HC11 or 68HC16 $139.95 each + $3 p&h • EMILY52 is a PC based 8051/52 high speed simulator $69.95 + $3 p&h • DDS demo disks $7 + $3 p&h • VHS VIDEO from the USA (PAL) “CNC X-Y-Z using car alter­nators” (uses car alternators as cheap power stepper motors!) $49.95 + $6 p&h (includes diagrams) • Fixed price electronic design and PCB layout • Credit cards accepted • All goods sent registered mail • Call Bob for more de­ t ails. MICRO­CRAFT, PO Box 514, Concord NSW 2137. Phone (02) 9744 5440 or fax (02) 9744 9280. http://www.micro.com.au email sales<at>micro.com.au MicroZed new Web page address: http://www.microzed.com.au/~microzed GOLD COAST/TWEED Electronic Kit Assembly and Troubleshoot­ing Service. Ph Geoff (07) 5570 7435. HOMEMADE GENERATORS: how to instructions. Eight pages free text and colour photos on the Internet at: http://www.onekw.co.nz/ VIDEO CAMERAS & EQUIPMENT Now! $75 PCB VIDEO CAMERA MODULES with Board or Pinhole Lens - Now! $75 Cat No MOD-BW 506 This Month Only! INFRARED ILLUMINATORS & KITS Complete Lamp 240vac Auto on/off $149. PCB LED Kits: 52mm Round Lamp Tubular Hooded Enclosure 50 LED 3.5-10 Watt $50. Rectangular 10 x 10cm 88-210 LED 6-44 Watt $79-$149. PCB Video Camera Modules 420/460 Line 0.05 lux $144/$177. 28 x 28mm PCB Modules THE TINIEST! Robust Mini Cube Cameras $147. Dome Ceiling Cameras $197. C Mount Cam­eras - Only! $99. Colour Modules & Cameras $449. TINY 12 x 12 x 4mm PCB Audio Modules from $30. TV Video/Audio Transmitter Mod­ules $54. Baluns 100/75 Ohm Use UTP or Telephone Cable for Video Only! $19. Monitors 5.5, 7, 9, 12 Inch from $119. Quad Screen Processors from $410. Colour Quads 512 x 512 Only! $999. Wireless CCTV Video/Audio Sets TX Camera & Receiver from $373. 74mW Infra Red LEDs from 48 cents! 3200mcd SuperBright Red LEDs 50 cents. Flashing Red, Green, Yellow, Orange LEDs $1. BEFORE YOU BUY! Ask for our Detailed, Illustrated Price List & Application Notes. Also available CCTV Technical, Design, Reference Manuals & CD ROM. Prices include tax. Discounts available! Allthings Sales & Services 08 9349 9413 fax 08 9344 5905. DS1620 SOFTWARE (WIN) – Digital thermometer/thermostat/programmer ver 3.0 (-30C to 120C) $30, DS1620 $12, PH $5. Mr Softmark, PO Box 1609, Hornsby, NSW 2077. Phone/fax (02) 9482 1565. A SIMPLE PIC84 PROGRAMMER: LED model 6 lights $70, LCD model 16 x 1 char. $80, pp $5. Others available. EST Electronics (02) 9789 3616. Fax (02) 9718 4762. RAIN BRAIN AND DIGI-TEMP KITS: 8-station controller and 8-chan­ n el, RS232 digital thermometer uses the incredible DS1820 sensor. Call Mantis Micro Products, 38 Garnet St, Niddrie, 3042. P/F/A (03) 9337 1917. http://www.home.aone.net.au/mantismp MicroZed Computers BASIC STAMPS & PIC Tools With third party supporting products, all in stock. Easy to learn, easy to use sophisticated CPU based controllers. PO Box 634, ARMIDALE 2350 (296 Cook’s Rd) Ph (067) 72 2777 – may time out to Mobile 014 036775 Fax (067) 72 8987 http://www.microzed.com.au/~microzed Credit cards OK. Send two 45c stamps for info MEMORY * MEMORY * MEMORY SIMMS Parity/Standard 4Mb 30-pin 60ns $41 $30 4Mb 72-pin 60ns $42 $32 8Mb 72-pin 60ns $86 $54 16Mb 72-pin 60ns $126 $108 32Mb 72-pin 60ns $263 $208 EDO SIMMS 72pin 60ns 4Mb / 8Mb $36 / $56 16Mb / 32Mb $106 / $208 64Mb / 128Mb $708 / $1490 DIMMS 168-pin 60ns 8Mb / 16Mb $70 / $114 32Mb / 64Mb $207 / $458 SDRAM 168-pin 12ns 8Mb / 16Mb $84 / $132 32Mb / 64Mb $255 / $653 TOSHIBA 16Mb Tecra 500/650 Sat. $201 16Mb Tecra 700 > 740 $267 GATEWAY 2000 16Mb Solo 2100/2200 $215 16Mb P5 166XL/G6-200 $169 IBM 16Mb Thinkpad 760, 365 $182 32Mb Aptiva S P200 $209 DELL 16Mb Latitude 4100 MX, MC, LC $205 32Mb Dimension M -SDRAM $422 16Mb Optiplex GS $224 HEWLETT PACKARD 8Mb Laserjet 4,5,6P/MP $67 8Mb Laserjet 5L, 6L $138 16Mb Omnibook 800 $224 CAMERA CARDS 8Mb Compact Flash $170 12Mb Compact Flash $315 8Mb ATA Flash $180 12Mb ATA Flash $234 We carry over 600 different modules for all makes, including ACER, AST, CANON, APPLE, NEC, ZENITH, SUN & SILICON GRAPHICS Pricing as at 01/07/97. PHONE FOR LATEST EX TAX PRICING OVERNIGHT DELIVERY $8 LIFETIME WARRANTY!! SALES TAX – 22% CREDIT CARDS WELCOME 651 Forest Rd, Bexley 2207 PELHAM Pty Suite 6, 2 Hillcrest Rd, Ph: (02) 9980 6988 Pennant Hills, 2120. Fax: (02) 9980 6991 Ltd Email: pelham1<at>ozemail.com.au makes all the project PCBs published in SILICON CHIP and other Australian magazines Tel +61 2 9587 3491 Fax 9587 5385 E-mail rcsradio<at>cia.com.au MicroZed have 5V UPS. Uses 2 x AA nickel cadmium cells. els. 2 x 40, 4 x 20, 2 x 16 LED BL $36 ea. BASIC Stamp handbook Version 1.8. Covers Stamp I & II $38 incl. post from MicroZed. WANTED MicroZed have a range of LCD pan- VALVES WANTED to buy. New and used. All types required. Phone (047) 51 5620. POSITION VACANT Electronics Technical Writer Silicon Chip Publications Pty Ltd is a small but growing magazine publishing company, situated in the Warriewood Valley near Sydney’s northern beaches. As part of our ongoing expansion program, we require a full-time technical writer for Silicon Chip, our monthly electronics magazine. The job: you don’t need to be a design engineer, as practical electronics design is not part of the job. What you do need is a good understanding of electronic circuitry and, above all, the ability to write clearly and logically. Your everyday activities will include: writing feature articles, editing rough articles written by our design engineers, and writing articles that describe the design and construction of electronic equipment. Some know­ledge of computers and photography would be well-regarded but it’s your electronics knowledge and the ability to write well that will land you this position. You will also need a good eye for detail, be able to work well in a team environment, and be flexible and willing to learn. How to apply: applications close on 18th August, 1997 and must be made in writing to: The Publisher, Silicon Chip Publications Pty Ltd, PO Box 139, Collaroy, NSW 2097. August 1997  95 14 Model Railway Projects ALF Our stocks of this book are now limited. All we have left are newsagents’ returns which means that they may be slightly shop soiled or have minor cover blemishes. Otherwise, they're undamaged and in good condition. SPECIAL CLEARANCE PRICE: $3.95 + $3 P&P (Aust. & NZ) This book will not be reprinted Yes! Please send me _____ copies of 14 Model Railway Projects at the special price of $A3.95 + $A3 p&p (p&p outside Aust. & NZ $A6). Enclosed is my cheque/money order for $­A__________ or please debit my ❏ Bankcard   ❏  Visa Card   ❏ MasterCard Signature­­­­­­­­­­­­___________________________  Card expiry date______/______ ______________________________________________________ Street Emona.........................................31 Freedman Electronics..................73 Harbuch Electronics....................73 Instant PCBs................................95 Jaycar ............................IFC, 45-52 Kalex............................................57 Kits-R-US.....................................74 MicroZed Computers...................95 Model Railways Book..................96 Oatley Electronics........................65 Pelham.........................................95 Rod Irving Electronics .......... 79-83 Card No. Name Aust. Comms. Authority...............87 Dick Smith Elecronics.... 8-11,34,35 Shop soiled but H PRICE! Advertising Index PLEASE PRINT Silicon Chip Back Issues....... 88-89 Silicon Chip Bookshop.................93 ______________________________________________________ Silicon Chip Binders................OBC Suburb/town_________________________________ Postcode_________ Silicon Chip Software..................75 Send your order to: SILICON CHIP, PO Box 139, Collaroy, NSW 2097; or fax your order to (02) 9979 6503; or ring (02) 9979 5644 and quote your credit card number (Bankcard, Visa Card or MasterCard). Silicon Chip Wallchart..............OBC RCS Radio...................................95 Tortech.........................................57 Microprocessor For Digital Effects Unit This is the 68HC705-C8P pro­ gramm­ed micro­pro­cessor IC for the Digital Effects Unit (see Feb­. 1995). Price: $45 + $6 p+p Payment by cheque, money order or credit card to: Silicon Chip Pub­ lica­ tions, PO Box 139 Collaroy 2097. Phone (02) 9979 5644; Fax (02) 9979 6503. 96  Silicon Chip Circuit Ideas Wanted Do you have a good circuit idea. If so, why not sketch it out, write a brief description of its operation & send it to us. Provided your idea is workable & original, we’ll publish it in Circuit Notebook & you’ll make some money. We pay up to $60 for a good circuit but don’t make it too big please. Send your idea to: Silicon Chip Publications, PO Box 139, Collaroy, 2097. Zoom Magazine.........................IBC _____________________________ PC Boards Printed circuit boards for SILICON CHIP projects are made by: •  RCS Radio Pty Ltd, 651 Forest Rd, Bexley, NSW 2207. Phone (02) 9587 3491. •  Marday Services, PO Box 19-189, Avondale, Auckland, NZ. Phone (09) 828 5730.