Silicon ChipContents - July 1994 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Valve amplifiers are dead & buried
  4. Feature: More TV Satellites To Cover Australia by Garry Cratt
  5. Project: SmallTalk: A Tiny Voice Digitiser For The PC by Darren Yates
  6. Feature: Electronic Engine Management; Pt.10 by Julian Edgar
  7. Project: Build A 4-Bay Bow-Tie UHF Antenna by Leo Simpson & Bob Flynn
  8. Project: The PreChamp 2-Transistor Preamplifier by Darren Yates
  9. Order Form
  10. Project: Steam Train Whistle & Diesel Horn Simulator by John Clarke
  11. Project: Build A Portable 6V SLA Battery Charger by Brian Dove
  12. Serviceman's Log: A screw loose somewhere? by The TV Serviceman
  13. Product Showcase
  14. Review: TVCoder: The Sequel To Your Video Blaster by Darren Yates
  15. Vintage Radio: Crackles & what might cause them by John Hill
  16. Back Issues
  17. Notes & Errata: 12-240VAC 200W Inverter, February 1994; Fast Charger for Nicad Batteries, May 1994
  18. Book Store
  19. Market Centre
  20. Advertising Index
  21. Outer Back Cover

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

You can view 30 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:
  • Electronic Engine Management; Pt.1 (October 1993)
  • Electronic Engine Management; Pt.2 (November 1993)
  • Electronic Engine Management; Pt.3 (December 1993)
  • Electronic Engine Management; Pt.4 (January 1994)
  • Electronic Engine Management; Pt.5 (February 1994)
  • Electronic Engine Management; Pt.6 (March 1994)
  • Electronic Engine Management; Pt.7 (April 1994)
  • Electronic Engine Management; Pt.8 (May 1994)
  • Electronic Engine Management; Pt.9 (June 1994)
  • Electronic Engine Management; Pt.10 (July 1994)
  • Electronic Engine Management; Pt.11 (August 1994)
  • Electronic Engine Management; Pt.12 (September 1994)
  • Electronic Engine Management; Pt.13 (October 1994)
Items relevant to "Build A 4-Bay Bow-Tie UHF Antenna":
  • 4-Bay Bow-Tie UHF Antenna [02108941] (PCB Pattern, Free)
Items relevant to "The PreChamp 2-Transistor Preamplifier":
  • Silicon Chip article scan, July 1994 - The PreChamp 2-Transistor Preamplifier (AUD $10.00)
  • Prechamp: 2-Transistor Preamplifier PCB [01107941] (AUD $5.00)
  • PreChamp 2-transistor preamplifier PCB pattern (PDF download) [01107941] (Free)
Items relevant to "Steam Train Whistle & Diesel Horn Simulator":
  • Silicon Chip article scan, July 1994 - Steam Train Whistle & Diesel Horn Simulator (AUD $10.00)
  • Steam Train Whistle & Diesel Horn Simulator PCB [09305941 / 05207941] (PCB Pattern, Free)
Items relevant to "Build A Portable 6V SLA Battery Charger":
  • Portable 6V SLA Battery Charger PCB pattern (PDF download) (Free)
Vol.7, No.7; July 1994 FEATURES FEATURES   6 More TV Satellites To Cover Australia by Garry Cratt A smorgasbord of new programs for enthusiasts   9 Silicon Chip/Tektronix Reader Survey Winners by Leo Simpson The winners of the Tektronix test gear DUBBED THE SMALLTALK, this tiny digitiser lets you record voice signals in RAM or on your PC’s hard disc. It uses just one common op amp & the software can be easily added to other programs – see page 17. 22 Electronic Engine Management, Pt.10 by Julian Edgar A look at ignition systems 77 Review: Yokogawa’s 7544 01 5-Digit Multimeter by Leo Simpson Has true RMS measurement & .05% accuracy 80 TV Coder: The Sequel to Video Blaster by Darren Yates Outputs VGA graphics to your TV or VCR PROJECTS PROJECTS TO TO BUILD BUILD 17 SmallTalk: A Tiny Voice Digitiser For The PC by Darren Yates Uses one common op amp & interfaces to the games port 32 Build A 4-Bay Bow-Tie UHF Antenna by Leo Simpson & Bob Flynn High gain design covers both UHF bands IV & V 43 The PreChamp 2-Transistor Preamplifier by Darren Yates Has 40dB of gain & provision for an electret microphone 54 Steam Train Whistle & Diesel Horn Simulator by John Clarke Adds realism to your model railroad layout 62 Build A Portable 6V SLA Battery Charger by Darren Yates This simple passive circuit does the job SPECIAL SPECIAL COLUMNS COLUMNS THINKING ABOUT building an antenna to pick up UHF TV in your area. This 4-bay bow-tie design has high gain & covers both UHF bands IV & V – details page 32. 66 Serviceman’s Log by the TV Serviceman A screw loose somewhere? 72 Computer Bits by Darren Yates BIOS interrupts: speeding up the keys 84 Vintage Radio by John Hill Crackles & what might cause them DEPARTMENTS DEPARTMENTS   2   4 14 53 77 Publisher’s Letter Mailbag Circuit Notebook Order Form Product Showcase 88 90 92 94 96 Back Issues Ask Silicon Chip Notes & Errata Market Centre Advertising Index ADD REALISM TO YOUR model railroad layout with this steam whistle simulator. It produces a very realistic steam whistle & can be easily modified to provide a diesel horn sound – turn to page 54. Cover concept: Marque Crozman July 1994  1