Silicon ChipMarket Centre - February 1993 SILICON CHIP
  1. Outer Front Cover
  2. Feature: The Silicon Chip 5th Birthday Sweepstakes
  3. Contents
  4. Publisher's Letter: Australia's unseen electronic industry
  5. Feature: Microwave Disinfection Of Medical Waste by John Cusack & Mark Taitz
  6. Project: Build The Electronic Cockroach by John Clarke
  7. Three Simple Projects For Model Railroads by Terry Mowles
  8. Subscriptions
  9. Project: A Low Fuel Indicator For Your Car by John Clarke & Greg Swain
  10. Project: The M.A.L. 4.03 Microcontroller Board; Pt.3 by Barry Rozema
  11. Project: Audio Level / VU Meter With LED Readout by Bernie Gilchrist
  12. Serviceman's Log: A story to support Murphy's Law by The TV Serviceman
  13. Order Form
  14. Product Showcase
  15. Project: A 2kW 24VDC To 240VAC Sinewave Inverter; Pt.5 by John Clarke
  16. Vintage Radio: The awakening of the Dragon by John Hill
  17. Market Centre

This is only a preview of the February 1993 issue of Silicon Chip.

You can view 54 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 "Build The Electronic Cockroach":
  • Electronic Cockroach PCB pattern (PDF download) [08310921] (Free)
Items relevant to "A Low Fuel Indicator For Your Car":
  • Low Fuel Indicator PCB pattern (PDF download) [05203931] (Free)
Articles in this series:
  • The M.A.L. 4.03 Microcontroller Board; Pt.1 (November 1992)
  • The M.A.L. 4.03 Microcontroller Board; Pt.2 (December 1992)
  • The M.A.L. 4.03 Microcontroller Board; Pt.3 (February 1993)
Items relevant to "A 2kW 24VDC To 240VAC Sinewave Inverter; Pt.5":
  • EEPROM table for the 2kW 24V DC to 240VAC Sinewave Inverter (Software, Free)
  • Transformer winding diagrams for the 2kW 24VDC to 240VAC Sinewave Inverter (Software, Free)
  • 2kW 24V DC to 240VAC Sinewave Inverter PCB patterns (PDF download) [11309921-4] (Free)
Articles in this series:
  • A 2kW 24VDC To 240VAC Sinewave Inverter; Pt.1 (October 1992)
  • A 2kW 24VDC To 240VAC Sinewave Inverter; Pt.2 (November 1992)
  • A 2kW 24VDC To 240VAC Sinewave Inverter; Pt.3 (December 1992)
  • A 2kW 24VDC To 240VAC Sinewave Inverter; Pt.4 (January 1993)
  • A 2kW 24VDC To 240VAC Sinewave Inverter; Pt.5 (February 1993)
.......TCENrRE Cash in your surplus gear. Advertise it here in Silicon Chip. r-------------------------7 CLASSIFIED ADVERTISING RATES ANTIQUE RADIO Advertising rates for this page: Classified ads: $10.00 for up to 15 words plus 40 cents for each additional word . Display ads (casual rate): $20 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 & send it with your cheque or credit card details to: Silicon Chip Classifieds, PO Box 139, Collaroy Beach, NSW 2097. Or fax the details to (02) 979 6503. ANTIQUE RADIO restorations. Your one-stop radio repair shop. Specialising in restoring vintage radios, including chassis rewiring, re-condensing, quality new parts, valves, valve sockets, speakers, power & audio transformers. Secondhand radio dials & parts for most brands & models. About 400 radios in stock for sale, restoration & parts. Every restored wireless is covered by a 2year warranty on parts & labour. We restore damaged woodwork & cabinets & French polish (approx. 40 coats) . Vintage car radios available for sale or restoration. Repairs done on tape decks. Open Sat. 10am-5pm; Sun. 12.30-5pm. 109 Cann St, Bass Hill, NSW 2197. Phone (02) 645 3173 BH or (02) 726 1613AH. FOR SALE Enclosed is my cheque/money order for $._ _ __ D Bankcard D Visa Card D Master Card or please debit my XI I I I Signature_ _ _ _ _ _ _ _ _ __ _ Card expiry date_ _~/_ _ _ I Name _ _ _ __ _ _ __ _ _ _ __ _ __ _ __ _ __ _ I I Street _ _ _ __ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ __ I I Suburb/town _ _ _ _ _ __ __ _ _ _ Postcode_ __ _ __ L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ JI Card No. 102 SILICON CHIP WEATHER FAX programs for IBM XT/ ATs *** "RADFAX2" $35 is a high resolution, shortwave fax, Morse & RTTY receiving program. Suitable for CGA, EGA, VGA and Hercules cards (state which). 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) 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, Old 4005. Phone (07) 358 2785. PAY ASIAN PRICES for common electronic components. No minimum. Ask about hard to get items. Local SAE for details. DIY Electronics, GPO Box 904, Hong Kong. FOR SALE: we have a number of Plessey 2001 B-MAC satellite receivers for sale. This model is currently retailing at over $2200.00. These are in good going condition and complete with SURPLUS COMPONENT SALE STOCK QTYS LIMITED, NO BACKORDER$ . 2N3055 $1.20 RESISTORS TIP30C $0.50 MOST VALUES AVAIL. TIP122 $1.20 1I4W MIFILM $31100 2N7000 $1.50 113W CARBON $21100 2SC2240 $0.60 112W CARBON $41100 VN88 $2.00 · 1W CARBON $51100 3N170 $1.50 2W CARBON $8/100 2N5954 $1.50 SW WIREWOUND $0.30 2N3440 $1.20 10W RESISTORS $0.60 2N4392 $0.50 100uF 10VTANT $1.50 LM3900 $0.50 C&K 1201 SW $0.50 27C41 $1.00 SW Oil SW $2.00 68681 $7.00 CD22100 IC $2.50 747CJ $0.80 78L12, 79L12 $0.50 8251 $3.00 8259 $4.00 74122 $0.50 A25 THERMISTOR $5.00 4520 $1.00 MCT275 OPTO $1.20 74HC132 $1.00 MOC3020 OPTO $2.00 74HC14 $1.00 MOC8050 OPTO $1.50 4528 $1.00 74C161 $2.00 7417 $0.50 74HC74 $0.70 9602 $0.50 74S02 $0.70 PHONE OR MAIL ORDERS, CREDIT CARDS ACCEPTED FOR ORDERS $20 & OVER, DISCOUNTS FOR QUANTITY ORDERS SECONTRONICS PO BOX 2215, BROOKSIDE, OLD 4053, PHONE {07) 355 1314 143 GRAYS RD, ENOGGERA, QLD 4051, FAX (07) 8551014 SHOP OPEN SATURDAY 9AM • 4PM AH (07) 8551880 MEMORY & DRIVES Plans Kits and PCBs PRICES AT DEC. 10TH, 1992 SIMM 1Mbx9 1Mbx 3 4Mbx9 4Mbx B DRAM DIP 1 x 1Mb 256 X 4 41256 1Mbx4 70ns 70ns 70ns 80ns $52 $48 $190 $174 70ns 70ns 80ns (stat) $5.50 $5.50 $2 $23 DRIVES SEAG42Mb SEAG89Mb SEAG 107Mb SEAG 130Mb SEAG245Mb 14ms 14ms 15ms 12ms 12ms $240 $310 $360 $398 $770 IBM PS.2 50/55170 70135 90/95 2Mb 4Mb 4Mb $120 $210 $210 TOSHIBA T3200SX T44/6400 T5200 2Mb 4Mb 2Mb $150 $300 $150 MAC 2Mb SI & LC 4Mb P'Book $95 $245 PROCESSORS INTEL 486DX2-66 INTEL 486 DX50 $950 $810 EPROMS 27C 256-150 $3 Sales tax 20%. Overnight delivery. Credit cards welcome. Ring for Latest Prices 100W Valve Amp PCB ............................................... $30 Valve Amp PSU PCB ................................................. $25 Universal PSU (±5/±12V) Dual Supply ...................... $10 Digi 125100W amp/pair ............................................ $10 ETI 1623 PIA for PCs .............................................. $40 Max 1/0 Board ............................................................ $40 Max Kit ............ .. ............... $169 LM380 3.5 amp PCB ................................................... $7 AEM 35W amp kit ........ ................................ .. ........ $20 ETI Audio Toolkit PCB .............................................. $10 AGC Amp PCB ...... .. ................. $7 Z-80 Miniprocessor PCB ............................................ $50 6502 Miniprocessor PCB ......................................... $50 6809 Miniprocessor PCB ........................................... $50 8048/8049 Developers board complete B& T ........... $199 IBM PC Prototype PCB.................. .. ...................... $50 EPROM Programmer .............................................. $299 ESL-1 Electrostatic speaker kit/pair inc manual ...... $899 ESL-1 Assembly Manual ........................................... $50 P.C. Computers (08) 332 6513 36 Regent St, Kensington SA. 1st Floor, 100 Yarrara Rd, PO Box 382, Pennant HIiis, 2120. Tel: (02) 980 6988 Fax: (02) 980 6991 PELHAM FIX-A-KIT KIT REPAIR & CONSTRUCTION remote controls and handbooks. If interested, please make a cash or Bankcard offer to: Long ridge Electronics, PO Box 290, Norfolk Island 2899, or fax to (0011) 6723 22833. THE HOMEBUILT DYNAMO: (plans) brush less, 1000 watt at 740 revs. $A85 postpaid airmail from Al Forbes, PO Box 3919 - SC, Auckland, New Zealand. Phone Auckland (09) 818 8967 anytime. KIT REPAIRS & Construction Service. Fixed price servicing for all kits. No job too small. Ph (02) 649 2134 after 5pm. COMPONENT PACKS, 30 trimpots, Bourns, Beckman etc, mixed values and types including multiturn. 400 metal film ¼W resistors, most are 1% or 2% Beyschlag, mixed values including some E96 and E192 series. 200 carbon film ½W and 1W resistors, most are Beyschlag 1% or 2%. All component packs $12 ea plus $5 p&p. Japanese transistor pack with two each of 2SA1069, 2SC923, 2SC1826, 2SC3157, 2SD381, 2SD667, $15 per pack. Electronic component pack, 400 items including ICs, transistors, diodes, resistors, trimpots, capacitors, relays, fuses etc. All new components, $25 per pack, plus $8 p&p. Valves, CV3998, · 12AX7, 12AY7, 12BY7A, 3A4, 6AM5, 6J7G, all $8 each or 10 for $70 (can be mixed). Open Thursday, Friday 4pm8pm, Saturday 9am-4pm, 143 Grays Rd, Enoggera, Old. Ph (07) 355 1314 or (07) 855 1880 AH. Fax (07) 855 TRANSFORMER REWINDS 3 MONTHS WARRANTY ON REPAIRS 12 MONTHS WARRANTY ON CONSTRUCTION TECHNICAL ASSISTANCE ALL TYPES OF TRANSFORMER REWINDS HVCAL ELECTRONICS TRANSFORMER REWINDS Design. Manufa cture & Re p a i r of El e ctro n ic Reply Paid No.2, PO Box 438, Singleton, NSW 2330. Ph: (065) 761291. Fax: (065) 761003. 1014. Visa, Bankcard, Mastercard available for fax or phone orders over $20. Secontronics, PO Box 2215, Brookside, Old 4053. 8061 MICRO-COMPUTER PROTOTYPING PCB $30 - similar to my ROMLoader EA Jan 92. Provision for 8255 PPI, 9346 EEPROM, 2k-32k SRAM, 2k-32k EPROM, MAX232, DIP switches & expansion header. Send A4 SAE for article. Tantau, PO Box 206, Gordon 2072. AMSTRAD NOTEPAD info disk. IBM 720K format. Includes expansion software drivers and circuits, a full map of all Port addresses, and a short machine language tutorial on the inbuilt Z80 Assembler. $15, or free with the purchase of a unit at $390 incl. post & ins. For promo disk, send a $1 stamp to [---------~=-; INTELSTAT - International Satellite (Television) Receiving System (movies, sport, news). Commercial 4.8-metre solid dish plus system electronics package. Can see operating. $3995.00 ono. Phone Rod (08) 387 03-Z:2. Equipme nt (02) 633 5477 Don McKenzie, 29 Ellesmere Crescent, Tullamarine 3043. Phone (03) 338 6286. MUSIC ON HOLD KIT: SC Sept.1990. This unit is simply connected across · the existing telephone line. Press the "Hold" button and your caller will have music on hold, press the release button to restore the conversation. Captures the line when activated and an inbuilt pulser and a flashing LED remind you that the hold function is activated. Will even release the line after a few minutes in case you forget that you left somebody on hold. Just add an inexpensive radio for a complete system. The radio is switched by this unit to conserve its batteries. On special at $30. For the complete kit without the case, 12V DC plugpack: $12.00. Cat No GK116. * 16 CHANNEL UHF REMOTE CONTROL: see EA Nov 88-Jan 89. One transmitter kit, one receiver kit, & one 4-channel relay driver kit, priced to clear •at a total price of $99. Ref XXFEB9401 . * 1-inch CRO TUBE: new 1-inch CRO tube, plus a connecting diagram, plus a simple experimental circuit. Very limited quantities: $30. Ref XXFEB9402. * FIBRE OPTIC CABLE: high quality fibre optic cable, single fibre <at> $2/metre or 10 metres for $15, dual fibre <at> $4/metre or 10 metres for FEBRUARY 1993 103 * JV Tuners - Repairs Tuner • • • • repairs for T\'s & \'CRs Shorted Turns Tester High \'oltage Probe Degaussing \\'and Remote Control Tester * (02) 7741154 Fax (02) 7741154 Transfonner Rewinds Advertising Index Altronics ... ....................... ...... 52-53 For all t~ pes of transformer rewinds. Antique Radio Restorations ..... 102 (065) 761291 Fax (065) 761003 Autotron Australia ............ .... ...... 41 A-One Electronics ................ 60-63 Av-Comm .... .......... ..................... 59 Breakthrough Computers .. .. ...... 49 Ian J Truscott's Electronic World EEM Electronics \!ail or credit card facilities Printed drrnit hoard assembly. s11itchmode pm1er supplies repaired. Design 1rnrk from start to finish. Ring anytime 9am-9pm \Ion-Sun. (03) 7233344 Fax (03) 4192808 (OJ) 4011393 For sen ice ~'\; re1rnir work David Reid Electronics ............. ... 5 Dick Smith Electronics .......... 10-13 EEM Electronics ..... ................ . 104 Electronic World ................. 77,104 Emona Instruments ................... 67 Ford Motor Company ............ OBC Harbuch Electronics .................. 76 $30. Ref XXFEB9403. * SWITCHED MODE POWER SUPPLIES: compact enclosed ex-Telecom supplies. Dimensions: 300 x 90 x 180mm. Unregulated input: 30-50V, regulated input of 12V<at> 6A or 5V <at> 40A; two different units. Limited stocks <at> $28 ea. P&P $7 (Heavy!). Specify type when ordering. Ref XXFEB9404. * SOLAR LIGHTING BARGAIN: (EA Nov. 92). This kit has three separate sections that are contained on one PCB b!,.lt can be separated: (1) a crystal locked ultrasonic movement detector, (2) a fluorescent tube inverter (4-20W) with logic circuitry, (3) a solar battery charging regulator & an incandescent lamp switcher-pulser, which employs a Mosfet switch. As a package special, we are offering the complete kit for the three sections plus six 6V/1 W solar panels for a total cost of only $99 ! Ref XXJAN93104. * SWITCHES: high quality miniature enclosed, Italian (FEME) 1, 2, 3 & 5pole, 12-position switches: $2.80 ea or 10 for $20. Ref XXJAN93105. Major cards accepted with phone & fax orders. Total cost of certified p&p: Australia $5, NZ (airmail) $10. Oatley Electronics, PO Box 89, Oatley, 2223. Phone (02) 579 4985. Fax (02) 570 7910. MICRO-ELECTRONIC ENGINEER: a Sydney-based computing technical company wishes to permanently appoint a micro-electronics engineer to provide technical support and to develop new products for export markets. Duties will involve to diagnose and repair MP based PCBs (component level); to design and debug MC interface driver using AL & C; to undertake research on the application of MP controlled elec- 104 SILICON CHIP T. A. Mowles Printed cirrnit hoards for the hohh~ ist. For sen ice & enquiries contact: Hycal Instruments .... ... .. ... ........ 103 Jaycar ... .. .. .... ..... . 33-36,69-72,IBC JV Tuners ................................ 104 Kalex .......... .............................. . 51 Oatley Electronics ......... 44-45, 103 (08) 3265590 PC Computers ......................... 103 Pelham ............................... 31,103 tronic equipment; to liaise with manufacturers in H.K. & Taiwan. The ideal person must have:* tertiary qualification in electronics engineering;* advanced skills in electronic hardware (analog & digital) and software (AL & C): * at least 5 years exp. in MP based hardware service, software design and network support; * initiative to work independently and ability to train staff; * proficiency in English and Mandarin; * a member of ACS, IREE or IEAust preferable. Salary range $32,000 - $38,000 p.a. Please send written application with resume and reference to: Managing Director, Keap Technology P/L, PO Box 1604, Chatswood, NSW 2067. Peter C. Lacey Services ............ 64 Philips Test & Measurement ...... 87 Plough Book Sales .................... 51 RCS Radio .............................. 104 Resurrection Radio .................... 77 Rod Irving Electronics .......... 90-95 Scan Audio .. .... .......................... 23 Scientific Devices ...................... 75 Silicon Chip Binders .................. 30 Silicon Chip Back Issues ...... 54-55 T. A. Mowles ............................ 104 Technical Applications .......... .. ... 43 Tektronix ....... ............................. 79 Tetia ...... .. ................................... 99 Transformer Rewinds .............. 104 RC§ RADIO PTY LTD ~ "ifr1ffi 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 PC Boards Printed circuit boards for SILICON CHIP projects are made by: • Jemal Products, 5 Forge St, Welshpool, WA 6106. Phone (09) 350 5555. • Marday Services, PO Box 19-189, Avondale, Auckland, NZ. Phone (09) 828 5730. • RCS Radio Pty Ltd, 651 Forest Rd, Bexley, NSW 2207. Phone (02) 587 3491.