Silicon ChipMarket Centre - April 1995 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: The Gordon Dam must not be emptied
  4. Feature: Electronics In The New EF Falcon by Julian Edgar
  5. Feature: VW Releases An Electric Car by Julian Edgar
  6. Project: Build An FM Radio Trainer; Pt.1 by John Clarke
  7. Project: A Photographic Timer For Darkrooms by John Clarke
  8. Order Form
  9. Project: Balanced Microphone Preamplifier & Line Mixer by Leo Simpson
  10. Project: 50W/Channel Stereo Amplifier; Pt.2 by Leo Simpson & Bob Flynn
  11. Project: Wide Range Electrostatic Loudspeakers; Pt.3 by Rob McKinlay
  12. Serviceman's Log: Sets aren't made of rubber, but... by The TV Serviceman
  13. Feature: Computer Bits by Greg Swain
  14. Feature: Remote Control by Bob Young
  15. Product Showcase
  16. Vintage Radio: Fault finding: there's always something different by John Hill
  17. Back Issues
  18. Market Centre
  19. Advertising Index
  20. Outer Back Cover

This is only a preview of the April 1995 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.

Articles in this series:
  • Electronics In The New EF Falcon; Pt.1 (March 1995)
  • Electronics In The New EF Falcon (April 1995)
  • Electronics In The New EF Falcon; Pt.3 (May 1995)
Items relevant to "Build An FM Radio Trainer; Pt.1":
  • Silicon Chip article scan, May 1995 - FM Radio Trainer Part Two (AUD $10.00)
  • Silicon Chip article scan, April 1995 - FM Radio Trainer Part One (AUD $10.00)
  • FM Radio Trainer PCB pattern (PDF download) [06303951/06304951] (Free)
  • Silicon Chip article scan, April 1995 - FM Radio Trainer Part One (AUD $10.00)
Articles in this series:
  • Build An FM Radio Trainer; Pt.1 (April 1995)
  • Build An FM Radio Trainer; Pt.2 (May 1995)
Items relevant to "A Photographic Timer For Darkrooms":
  • Photographic Timer for Darkrooms PCB pattern (PDF download) [10304951] (Free)
Items relevant to "Balanced Microphone Preamplifier & Line Mixer":
  • Silicon Chip article scan, April 1995 - Balanced Microphone Preamplifier & Line Mixer (AUD $10.00)
Items relevant to "50W/Channel Stereo Amplifier; Pt.2":
  • 50W/Channel Stereo Amplifier PCB pattern (PDF download) [01103951] (Free)
  • 50W/Channel Stereo Amplifier Preamplifier PCB patterns (PDF download) [01103951-4] (Free)
Articles in this series:
  • 50-Watt/Channel Stereo Amplifier Module (February 1995)
  • 50W/Channel Stereo Amplifier; Pt.1 (March 1995)
  • 50W/Channel Stereo Amplifier; Pt.2 (April 1995)
Articles in this series:
  • Wide Range Electrostatic Loudspeakers; Pt.1 (February 1995)
  • Wide Range Electrostatic Loudspeakers; Pt.2 (March 1995)
  • Wide Range Electrostatic Loudspeakers; Pt.3 (April 1995)
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 (October 1989)
  • Remote Control (November 1989)
  • Remote Control (December 1989)
  • Remote Control (January 1990)
  • Remote Control (February 1990)
  • Remote Control (March 1990)
  • Remote Control (April 1990)
  • Remote Control (May 1990)
  • Remote Control (June 1990)
  • Remote Control (August 1990)
  • Remote Control (September 1990)
  • Remote Control (October 1990)
  • Remote Control (November 1990)
  • Remote Control (December 1990)
  • Remote Control (April 1991)
  • Remote Control (July 1991)
  • Remote Control (August 1991)
  • Remote Control (October 1991)
  • Remote Control (April 1992)
  • Remote Control (April 1993)
  • Remote Control (November 1993)
  • Remote Control (December 1993)
  • Remote Control (January 1994)
  • Remote Control (June 1994)
  • Remote Control (January 1995)
  • Remote Control (April 1995)
  • Remote Control (May 1995)
  • Remote Control (July 1995)
  • Remote Control (November 1995)
  • Remote Control (December 1995)
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. TINY VIDEO CAMERAS from $199. MATCHBOX SIZE PCB MODULES 25 Types. Optional: Lenses, C Lens Mounts, Cases & Technical Manuals. See p.90 SC Feb 1995. ALSO C.C.T.V. Std & Mini Cameras, Quad Splitters, Auto Switchers, Audio/Visual Intercoms, Observation Systems, Camera-TV/VCR Antenna Patch Links, Cordless Portable Camera-TV/ VCR Links, Colour Modules/Cameras. TINY PINHOLE MODULES 32 x 32 x 15mm SEE through a 2mm hole from $239. Competitive Prices, Qty, Indent & Manufacturer Discounts. ALLTHINGS SALES & SERVICES Ph/Fax (09) 349 9413. _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ _____________ DOS PROGRAMS: auto substitution databases, transistor $25, rectifier $25, zener $25, signal $25, PCBCAD $25, SCHCAD $35, VGA Test $25. Order by M.O. payable to G. A. Georgopoulos, 34 Scouller St, Marrickville 2204. 8051 SINGLE BOARD COMPUTER: use it to control stepper motors, robotics, build an electronic door lock or automate your house! Essential building block for any project. Simply download program into RAM and execute. Mac and PC assembler provided. NO EPROM PROGRAMMER REQUIRED! Features: RS232 Serial, 24 I/O lines, 128Kb Memory or I/O expansion bus, 64Kb UV ROM (128Kb max), 32Kb battery backed RAM 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 YUGA ENTERPRISE BA, LA, LB, LC, UPA, UPB, UPC, TA, Buy TBA, TDA, TEA, & 2SA, 2SB, 2SC, Sell ese 2SJ, 2SK, SAA, Japan STA, STK, STR, s IC & tors HA, AC, KA, KIA, Transis IX, LM, MN, PA TEL: (65) 741 0300 FAX: (65) 749 1048 705 Sims Drive #03-09 Shun Li Industrial Complex Singapore 1438 CTOAN ELECTRONICS PO Box 211, Jimboomba 4280. (07) 297 5421 New Kits Coming – Send For Details (1) Digital Speedo & Fuel Gauge (2) Digital Engine Temperature Gauge (3) Digital Battery Voltage Monitor (4) Automatic Pool Pump Controller (5) Main Connected Remote Control System (6) Bar Of Light Tachometer (128Kb max), audio speaker output, watchdog timer, two external interrupts, two timers and real time clock option. Single qty tax inc: $120. SYCON TECHNOLOGIES. Phone (03) 738 0315. Fax (03) 859 2309. SATELLITE EQUIPMENT: dishes 65cm from $140. LNBs from $150 for 1.3dB voltage switching Ku or 25 deg C band. We also sell receivers, eg Pace PSR919 for $500. We carry many brands: Gardiner, Chaparrel, Pace, Drake, Swedish Microwave, ComStar, KTI, etc. Prices you can afford. Phone or fax Satellite Professionals (03) 803 0215. 68705 DEVELOPMENT SYSTEM: In Circuit Simulator/Emulator and programmer board. Supports 68705 and 68HC705 series of Motorola micro controllers. Oztechnics, PO Box 38, Illawong, NSW 2234. Phone (02) 541 0310. Fax (02) 541 0734. Email oztec<at> ozemail.com.au. "SATFACTS" Satellite Newsletter: monthly report on launches, satellite positioning, transmission formats, equipment, etc. Of interest to retailers, installers, system planners and all dish users in the Pacific Ocean region. The best $75 you'll ever spend (plus postage). Send for your free copy. Av-Comm Pty Ltd, 198 Condamine St, Balgowlah 2093. PO Box 225, Balgowlah 2093. MEMORY & DRIVES PRICES AT APRIL, 1995 SIMM (all 70ns) Parity/No Parity 1Mb 30-pin $64/58 4Mb 30-pin $200/200 2Mb 72-pin $148/135 4Mb 72-pin $258/228 8Mb 72-pin $515/470 16Mb 72-pin $780/690 32Mb 72-pin $1560/1380 Parallax “BASIC STAMP”: 8 I/O pins and proto­ typing area. Program it with a PC, 33 simple instructions. Development kit includes one “BASIC STAMP” ($270). Extra modules ($79.85). Chipset and Resonator to make your own $30.25. STAMP Stretch­ er 16 I/O 1 A/D $91.96. Serial input LCD display $102.85. Scarce com­ponents need­ed for Application notes now in stock. Small items XPress post $5, kit $8. Send four 45c stamps for details. Parallax Distributor and technical support in Australia. MicroZed Computers PO Box 634 (296 Cook’s Rd), ARMIDALE 2350 V (067) 722 777 F (067) 728 987 Credit cards accepted. MAC 8Mb P’BOOK CO-PROCESSORS 387S/DX to 40 $405 $90 LASER PRINTER HP with 2Mb $200 DRAM DIP 1Mb x 1 70ns DIP $7.80 256 x 4 70ns DIP $7.80 256 x 16 70ns SOJ $48.00 IBM PS.2 THINKPAD L40/N33 8Mb 4Mb $655 $275 TOSHIBA 3100SX 2100/50 4Mb 8Mb $255 $585 SUN SPARC 5 32Mb SPARC 10/20 64Mb $1780 $3696 DRIVES – SEAGATE 545Mb 14ms 3yr wty $335 1052Mb 9ms 5yr wty $550 COMPAQ 2148Mb 9ms 5yr wty $1470 CONTURA 8Mb $550 Sales tax 21%. Overnight delivery. Credit cards welcome. Ring for latest prices. We buy & trade RAM. 1st Floor, 100 Yarrara Rd, PO Box 382, Pennant Hills, 2120. Tel: (02) 980 6988 Fax: (02) 980 6991 • PELHAM ELECTROSTATIC LOUDSPEAKERS • 3-Panel Full Range Design. Available in kit form or fully assembled. Locally designed & manufactured. • For information brochure, Phone (09) 397 6212 Fax (09) 496 1546 Or write to: E. R. AUDIO, 119 BROOKTON HWY, ROLEYSTONE, WESTERN AUSTRALIA 6111. N.S.W. Ph. (02) 804 6859 S.A. Ph. (08) 332 6513 TAS. Ph. (002) 31 2403 ACN 002 174 478. Phone (02) 949 7417 or 948 2667; or fax 949 7095. Cheque or credit cards welcome. 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. NEW SPRINKLER CONTROLLER KITS: RAIN BRAIN version uses 'C8 and switch mode supply. Features galore!! Contact Mantis Micro Products, 38 Garnet St, Niddrie 3042. Phone/fax (03) 337 1917. INFRARED AUDIO CONTROL KIT: based on the Intelligent Infrared Receiver kit (ref. Silicon Chip, March 94) to control volume, treble, bass, balance, mute and select between two inputs (CD, VCR, etc). Also available Intelligent Infrared Receiver kits and infrared transmitters, preprogrammed and learning models. For details call BENETRON P/L, phone (02) 963 3868 or (018) 200 108. C COMPILERS: everything you need to develop C and ASM software for 68HC08, 6809, 68HC11, 68HC16, 8051/52, 8080/85, 8086 or 8096: $150.00 each. Macro Cross Assemblers for these CPUs + 6800/01/03/05 and 6502: $150 for the set. Debug monitors: $75 for 6 CPUs. All compilers, XASMs and monitors: $550. 8051/52 or 80C320 simulator (fast): $75. Demo disk: $5. Network Software: use serial, parallel, Arcnet or Ethernet to share files and printers on your PCs. DOS and Windows compatible. $105 per net­work. All prices + postage. GRANTRONICS, PO Box 275, Wentworth­ville 2145. Ph/Fax (02) 631 1236. April 1995  95 Microprocessor For Digital Effects Unit Microprocessor For Stereo Preamplifier Advertising Index Now available from SILICON CHIP: the 68HC705-C8P pre-programmed micro­pro­cessor IC for the Digital Effects Unit described in the Feb­ruary 1995 issue. Price: $45 + $6 p+p Payment by cheque, money order or credit card to: Silicon Chip Pub­lica­ tions, PO Box 139, Collaroy, NSW 2097. Phone (02) 979 5644; Fax (02) 979 6503. Now back in stock: the 68HC705-C8P pre-programmed micro­pro­cessor for the Infrared Remote Controlled Stereo Preamplifier (SILICON CHIP, Sept.Oct. 1993). This device also suits the Remote Volume Control published in 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. Altronics ................................ 22-24 TECHNOLOGY BREAKTHROUGH: a $20 Programmer Kit for one of the newest, fastest, low power, single chip EEPROM micros available. The $15 PIC16C84 can be it’s own downloader development system as it will re-program 1Meg times, each time in 10 seconds. Send a $2 coin for my PROMO disk. Don McKenzie, 29 Ellesmere Crescent, Tullamar­ine 3043. Phone (03) 338 6286. VALVES: all types for radio, audio and industrial use. For sale and wanted to buy. SSAE for list. Electronic Valve and Tube Company, PO Box 381, Chad­ stone, Vic 3148. Fax (03) 571 1160. Ph (018) 557 380. LEARN MICROCONTROLLER programming with our Motorola 68HC­ 705K1 & P9 Kits. All code fully commented, provided on floppy disk. Intro- Av-Comm.....................................55 Avico Electronics.........................95 Dick Smith Electronics........... 10-13 Emona Instruments.....................83 E.R. Audio....................................95 Harbuch.......................................82 Instant PCBs................................95 duction to the K1 (reviewed in Everyday Electronics, 2/94), Reaction Timer (Electronics Australia, 3/94), Number Crunch­er (EA, 9/94), & Codepad (uses P9). DIY Electronics, phone/fax: (058) 62 1915. PELTIER EFFECT solid state modules 3cm x 3cm, 8V/5.4A. One side heats, the other cools. Up to 59 deg. C differential. Also 2.5mw, 635nm LASER DIODE modules, 10 times brighter than 670nm modules. HeNe replacement, 3V to 6V. 3-element glass collimating lens adjustable. DIY Electronics, tel/fax: (058) 62 1915. PRINTED CIRCUIT BOARDS for the hobbyist. For service & enquiries contact: T. A. Mowles (08) 326 5590. Jaycar ......................... 33-36,61-64 Kalex............................................66 Macservice...............................3,75 MicroZed Computers...................95 Oatley Electronics.................. 84-85 Pelham.........................................95 RCS Radio ..................................94 Rod Irving Electronics .......... 76-80 SC Railway Projects Book.......OBC Silicon Chip Back Issues....... 90-91 Silicon Chip Software..................32 SILICON CHIP FLOPPY INDEX WITH FILE VIEWER Silicon Chip Wallchart................IBC 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. Yuga Enterprise...........................95 _________________________________ 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 each + $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. 96  Silicon Chip Tortech.........................................66 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.