Silicon ChipMarket Centre - November 1994 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Tiny electronic components can be hard to see
  4. Feature: Anti-Lock Braking Systems; How They Work by Julian Edgar
  5. Project: Build A Dry-Cell Battery Rejuvenator by Darren Yates
  6. Project: A Novel Alphanumeric Clock by Anthony Nixon
  7. Serviceman's Log: Tread carefully with a new brand name by The TV Serviceman
  8. Project: UHF Radio Alarm Pager by Branco Justic
  9. Project: 80-Metre DSB Amateur Transmitter by Leon Williams VK2DOB
  10. Project: Twin-Cell Nicad Discharger by Darren Yates
  11. Vintage Radio: Resurrecting a pair of old AWA C79 chassis by John Hill
  12. Feature: Computer Bits by Darren Yates
  13. Feature: How to plot patterns directly to PC boards by John Clarke
  14. Feature: Remote Control by Bob Young
  15. Product Showcase
  16. Back Issues
  17. Market Centre
  18. Advertising Index
  19. Outer Back Cover

This is only a preview of the November 1994 issue of Silicon Chip.

You can view 29 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 "A Novel Alphanumeric Clock":
  • Novel Alphanumeric Clock PCB pattern (PDF download) (Free)
Items relevant to "80-Metre DSB Amateur Transmitter":
  • 80m DSB amateur transmitter (PDF Download) [06110941] (PCB Pattern, Free)
Items relevant to "Twin-Cell Nicad Discharger":
  • Twin-Cell Nicad Discharger PCB pattern (PDF download) [14305931] (Free)
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 (August 1994)
  • Remote Control (September 1994)
  • Remote Control (November 1994)
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. To run your classified ad, print it clearly in the space below or on a separate sheet of paper, fill out the form & 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) 979 6503. REAL TIME ICE!!! The only way to go. MOTOROLA 6805 EMULATOR and programmers. Prices and data from Graham Blowes, Mantis Micro Products, 38 Garnet Street, Niddrie 3042. Phone (03) 337 1917 (a/h), (03) 575 3349 (b/h). Fax (03) 575 3369. _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ OSCILLOSCOPE: Hameg HM 205 Digital Storage CRO. As new condition with probes, comprehensive manual and case. $1100.00. Phone (065) 57 0341. HP DRAFTPRO PLOTTER: A1/A2 8 pen ink plotter with RS232 inter­face. Excellent condition. Paper, film and pens included. Price $4500 ono. Phone (02) 476 2244 BH. RACAL DANA 4003 DMM: 1uV-10V DC source, AV09, Paton PA-2 power analyser, Palec 10A shunt, Telemax insulation tester. Offers (02) 684 1729. WEATHER FAX programs for IBM XT/ ATs *** “RADFAX2” $35 is a high resolution, shortwave weather fax, Morse & Rtty receiving program. Suitable for CGA, EGA, VGA and Hercules cards. Needs SSB HF radio & Radfax decoder. *** “SATFAX” $45 is a NOAA, Meteor & GMS weather satellite picture receiving program. Needs EGA or VGA plus “WEATHER FAX” PC card. *** “MAXISAT” $75 is similar to SATFAX but needs 2Mb expanded memory (EMS 3.6 or 4.0) Enclosed is my cheque/money order for $­__________ or please debit my RCS RADIO PTY LTD Card No. ✂ ❏ Bankcard   ❏ Visa Card   ❏ Master Card Signature­­­­­­­­­­­­__________________________ Card expiry date______/______ Name ______________________________________________________ Street ______________________________________________________ Suburb/town ___________________________ Postcode______________ 94  Silicon Chip RCS Radio Pty Ltd is the only company that manufactures and sells every PC board and front panel published in SILICON CHIP, ETI and EA. RCS Radio Pty Ltd, 651 Forest Rd, Bexley 2207. Phone (02) 587 3491 TRANSFORMER REWINDS ALL TYPES OF TRANSFORMER REWINDS TRANSFORMER REWINDS Reply Paid No.7, PO Box 1058, St Marys, NSW 2760. Ph: (02) 833 1146. Fax: (02) 623 5559. and 1024 x 768 SVGA card. All programs are on 5.25-inch or 3.5-inch disks (state which) & include documentation. Add $3 postage. Only from M. Delahunty, 42 Villiers St, New Farm, Qld 4005. Phone (07) 358 2785. MONITOR HARDWARE SIGNAL(S): a change takes place, a two-chip cir­cuit programmed by you in Basic uses a cheap 2400 modem to dial an alphanumeric pager and leave a numeric message. You can even “ring in” from any phone for an instant report. It’s Don’s Basic Stamp. Promo Disk $2. Don McKenzie, 29 Ellesmere Crescent, Tulla­marine 3043. Phone (03) 338 6286. CAPACITORS: Markon electrolytic 33,000µF 63V. $10ea plus postage. Phone (02) 399 9623. SUBSTITUTE FOR A HANDFUL OF ICs: Parallax “BASIC STAMP”. A gen­er­al purpose small circuit module, it is really a 25 x 50mm board with a computer chip (4MHz PIC 16C56), EEPROM, 8 I/O pins, board space includes prototyping area. Program it on a PC (only 33 instructions) with development kit which includes one “BASIC STAMP” ($249 plus S/T & post), extra modules ($66 plus S/T & post). Send 45c stamp for more information. Parallax distributor and techni­cal support in Australia: MicroZed Computers, PO Box 634, Armi­dale, NSW 2350. Facsimile (067) 72 8987. MICASOFT Electronics and Computing tutor program, written in UK, ideal for TAFE, schools, or individual use. Now available in Australia. Send $1.80 in stamps for demo disk (tell us what size). MicroZed Computers, PO Box 634, Armidale 2350. UNUSUAL BOOKS: Electronic Devices, Fireworks, Locksmithing, Radar Invisibility, Surveillance, Self-Protection, Unusual Chem­ istry and more. For a complete catalog, send 95 cents in stamps to Vector Press, Dept S, PO Box 434, Brighton, SA 5048. • • • • 350 Watt Power MOSFET Amplifier Module As published in the June 1994 issue of Silicon Chip. Kit price $159.00. Postage and handling $8.00. Payment by M/C, B/C, Visa, Cheque or Money Order. 3kg O/N Air Bag $10.00 Computer & Electronic Services Pty Ltd 27 Osborne Avenue, Trevallyn Launceston, Tasmania 7250 Phone 003-34 4218; Fax 003-31 4328 MEMORY & DRIVES PRICES AT SEPT. 28TH, 1994 SIMM (all 70ns) Parity/No Parity 1Mb 30-pin $58/54 4Mb 30-pin $208/198 2Mb 72-pin $125 4Mb 72-pin $230/210 8Mb 72-pin $470/420 16Mb 72-pin $815/745 32Mb 72-pin $1690/1500 MAC 6Mb P’BOOK CO-PROCESSORS 387S/DX to 40 $395 $90 LASER PRINTER HP with 2Mb $200 COMPAQ CONTURA 8Mb $425 DRAM DIP 1Mb x 1 256 x 4 70ns 70ns $8 $8 IBM PS.2 THINKPAD L40/N33 90/95 8Mb 4Mb 4Mb $655 $280 $230 TOSHIBA 3100SX 46/1900 4Mb 4Mb $210 $260 SUN SPARC 10/20 16Mb SPARC 10/20 64Mb $965 $4080 DRIVES – SEAGATE 428Mb 14ms 3yr w 528Mb 12ms 3yr w 1052Mb 9ms 5yr w $325 $420 $995 Sales tax 21%. Overnight delivery. Credit cards welcome. Ring for latest prices. 1st Floor, 100 Yarrara Rd, PO Box 382, Pennant Hills, 2120. Tel: (02) 980 6988 Fax: (02) 980 6991 INTELLIGENT INFRARED RECEIVER (ref SILICON CHIP, March 94). Now with 8 outputs. Use your TV or VCR infrared remote control trans­mitter to control your TV or hifi appliances with an intelligent infrared receiver kit. Also available infrared transmitters, preprogrammed and learning models. Coming soon: Economy Infrared Audio Control Kit. For details call BENETRON P/L (018) 20 0108. BINARY CLOCK - OCTOBER 1993: complete documentation supplied, includes introduction to binary, how it works, PLD source list­ings, conversion tables. Kit with PC board and all PELHAM components $75 plus $5 p&p. Optional Z frame stand (includes spacers and chassis DC connector) $25 plus $5 p&p. Available from Prototype Electronics, 1/29 Stewart St, Parra­matta, NSW 2124. Phone (02) 890 2960; Fax (02) 630 3148. Pay by cheque, money order, credit card. PRINTED CIRCUIT BOARDS for the hobbyist. For service & enquiries contact: T. A. Mowles (08) 326 5590. 68705 DEVELOPMENT SYSTEM: In Circuit Simulator/Emulator and programmer board. Supports all 68HC705 SILICON CHIP FLOPPY INDEX WITH FILE VIEWER Now available: the complete index to all SILICON CHIP articles since the first issue in November 1987. The Floppy Index comes with a handy file viewer that lets you look at the index line by line or page by page for quick browsing, or you can use the search function. All commands are listed on the screen, so you’ll always know what to do next. Notes & Errata also now available: this file lets you quickly check out the Notes & Errata (if any) for all articles published in SILICON CHIP. Not an index but a complete copy of all Notes & Errata text (diagrams not included). The file viewer is included in the price, so that you can quickly locate the item of interest. The Floppy Index and Notes & Errata files are supplied in ASCII format on a 3.5-inch or 5.25-inch floppy disc to suit PC-compatible computers. Note: the File Viewer requires MSDOS 3.3 or above. Price $7.00 + $3 p&p. Send your order to: Silicon Chip Publications, PO Box 139, Collaroy 2097; or phone (02) 979 5644 & quote your credit card number; or fax the details to (02) 979 6503. Please specify 3.5-inch or 5.25-inch disc. November 1994  95 SmallTALK for PCs: voice digitiser for 286's and up Play speech on your PC's speaker with no sound card! 3 minute version $34.95 HDD version $39.95 Optional QLB/LIB libraries $14.00 All orders add $3.05 p+p. Send your cheque/order to: RAT Electronics AUSTRALIA PO Box 641, Penrith, NSW 2750 Ph: (047) 77 4745 Fax: (047) 77 4745 Microprocessor For Stereo Preamplifier Now back in stock: the 68HC705-C8P pre-programmed micro­pro­cessor for the Infrared Remote Controlled Stereo Preamplifier (SILICON CHIP, Sept.Oct. 1993). Also suits the Remote Volume Control (May & June, 1993). Price: $45 + $6 p+p Payment by cheque, money order or credit card to: Silicon Chip Publications, PO Box 139, Collaroy, NSW 2097. Phone (02) 9795644; Fax (02) 979 6503. SECONTRONICS Advertising Index COMPONENTS, COMPUTERS, ELECTRON TUBES S/H TEST EQUIPMENT, COMPUTER REPAIRS RECYCLED EPROMS: ALL ARE CLEANED, ERASED AND BLANK TESTED. 2716 2732 2764 27128 27256 $1.50 ea or 10 for $12 $1.50 ea or 10 for $12 $2.00 ea or 10 for $16 $3.00 ea or 10 for $26 $3.50 ea or 10 for $32 Altronics ................................ 74-76 Av-Comm..................................3,87 Computer & Elect. Services.........95 David Reid Electronics ..............19 Dick Smith Electronics........... 10-13 TRANSISTORS AND ICs 2N3440 $0.50 ea or 10 for $4 2N7000 $0.80 ea or 10 for $6 TIP122 $1.20 ea or 10 for $10 4023, 4024, 4049 $0.60 ea 10/$5 4040 $1 ea, 10/ $8; 4520 $1.50 ea, 10/$12 7406 $0.25 ea or 25 for $5 LM380N $2.50 ea or 10 for $20 DAC O8EP $5.00 ea or 10 for $45 Emona Instruments.....................89 QQV07/50 $15 6SG7 $6 1S2 $3 6AM6 $5 Macservice............................ 62-63 VALVES: 12AV7 $4 1B3GT $5 6J6WA $5 3D21 6U8A 6080WA 6X5GT $6 $6 $9 $5 Phone, mail or fax your orders. Credit cards accepted for orders $20 and over. Mail orders to PO Box 2215, Brookside, Qld 4053. Or shop sales at 143 Grays Road, Enoggera Qld. Hours: Thursday 4pm-9pm; Sat 9am-4pm. Phone (07) 353 4919, Fax (07) 855 1014. Instant PCBs................................95 Jaycar ................................... 45-52 Kalex............................................88 L & M Video.................................67 Oatley Electronics.................. 68-69 Pelham........................................95 Rat Electronics............................96 Resurrection Radio......................73 RCS Radio ..................................94 Rod Irving Electronics .......... 27-31 range including C4, C8, J2, K1, P9, C9, D9 & 68705P3, U3, R3 microcontrollers. For more information contact Oztechnics, PO Box 38, Illawong NSW 2234, Phone (02) 541 0310, Fax (02) 541 0734 Email oztec<at>ozemail.com.au. WANTED WANTED: made in USA or Western Europe audio valves, vintage audio equipment and books about valve technology. Contact Wai Kei Leung, Block B, 5th Floor, 7 Kweilin St, Shamshuipo, Kow­loon, Hong Kong. Fax: (852) 387 5560. WANTED TO BUY: Radio valves, loose, or in cartons, by keen col­lector. Will call almost anywhere. Phone (02) 759 2948. WANTED: Philips FM828 Band A mobile units, also UHF units suit­able for conversion to UHF CB repeater operations. Contact Woo­mera CFS Comm’s Officer after hours (086) 73 7306. CALLING ALL HOBBYISTS We provide the challenge and money for you to design and build as many simple, useful, economical and original kit sets as possible. We will only consider kits using lots of ICs and transistors. If you need assistance in getting samples and technical specifications while building your kits, let us know. YUGA ENTERPRISE 705 SIMS DRIVE #03-09 SHUN LI INDUSTRIAL COMPLEX SINGAPORE 1438 TEL: 65 741 0300    Fax: 65 749 1048 96  Silicon Chip Secontronics................................96 Silicon Chip Back Issues....... 90-91 Silicon Chip Binders..................IBC Silicon Chip Projects Book........IFC Silicon Chip Wallchart..............OBC Transformer Rewinds...................95 Yokogawa....................................19 Yuga Enterprise...........................96 _________________________________ PC Boards Printed circuit boards for SILICON CHIP projects are made by: • RCS Radio Pty Ltd, 651 Forest Rd, Bexley, NSW 2207. Phone (02) 587 3491. • Marday Services, PO Box 19-189, Avondale, Auckland, NZ. Phone (09) 828 5730. • H. T. Electronics, 35 Valley View Crescent, Hackham West, SA 5163. Phone (08) 326 5590.