Silicon ChipContents - August 2005 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Some people love valve amplifiers
  4. Feature: 60 Years Of The Atomic Bomb by Keith Walters
  5. Feature: Direct Petrol Injection by Julian Edgar
  6. Project: The Mudlark A205 Valve Stereo Amplifier by David Whitby
  7. Project: Programmable Flexitimer by Jim Rowe
  8. Project: Carbon Monoxide Alert by John Clarke
  9. Project: Serial LCD Driver by Graeme Matthewson
  10. Project: Enhanced Sports Scoreboard by Jim Rowe
  11. Salvage It: Washing machine pressure switches by Julian Edgar
  12. Vintage Radio: The AWA Radiola B32 transistor portable by Rodney Champness
  13. Feature: Hellschreiber Revisited by Silicon Chip
  14. Advertising Index
  15. Book Store
  16. Outer Back Cover

This is only a preview of the August 2005 issue of Silicon Chip.

You can view 33 of the 112 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:
  • The Mudlark A205 Valve Stereo Amplifier (August 2005)
  • The Mudlark A205 Valve Stereo Amplifier, Pt.2 (September 2005)
Items relevant to "Programmable Flexitimer":
  • Programmable Flexitimer main PCB [04108051] (AUD $12.50)
  • Programmable Flexitimer display PCB, DSE version [04108052] (AUD $12.50)
  • Programmable Flexitimer display PCB, Altronics version [04108054] (AUD $12.50)
  • PIC16F84A-04(I)/P programmed for the Programmable Flexitimer [PICTIME2.HEX] (Programmed Microcontroller, AUD $10.00)
  • PIC16F84A firmware and source code for the Programmable Flexitimer [PICTIME2.HEX] (Software, Free)
  • Programmable Flexitimer Main PCB pattern (PDF download) [04108051] (Free)
  • Programmable Flexitimer Display PCB patterns (PDF download) [04108052/3/4] (Free)
  • Programmable Flexitimer front panel artwork (PDF download) (Free)
Items relevant to "Carbon Monoxide Alert":
  • PIC16F88-I/P programmed for the Carbon Monoxide Alert [cosensor.hex] (Programmed Microcontroller, AUD $15.00)
  • PIC16F88 firmware and source code for the Carbon Monoxide Alert [cosensor.hex] (Software, Free)
  • Carbon Monoxide Alert PCB pattern (PDF download) [05108051] (Free)
Items relevant to "Serial LCD Driver":
  • PICAXE BASIC source code for the Serial LCD Driver (Software, Free)

Purchase a printed copy of this issue for $10.00.
Contents Vol.18, No.8; August 2005 www.siliconchip.com.au FEATURES    8 60 Years Of The Atomic Bomb It’s 60 years since the first atomic bombs were used in warfare. Here’s a look at the two designs used and their deadly effect – by Keith Walters 22 Direct Petrol Injection Complex electronics control and direct fuel injection into the combustion chambers can provide big fuel savings. Here’s how it works – by Julian Edgar 102 Hellschreiber Revisited Feedback from readers suggests that it’s not as it appears at first glance PROJECTS TO BUILD Mudlark A205 Valve Stereo Amplifier – Page 30. 30 The Mudlark A205 Valve Stereo Amplifier Want to build a valve stereo amplifier for your hifi system? This class-A2 triode unit produces 20W/channel and has good performance – by David Whitby 38 Programmable Flexitimer It’s easy to build, easy to program and can be set to give two sequential time periods of up to 99 minutes and 59 seconds. What’s more, you can program it for up to 99 cycles of the time periods – by Jim Rowe 61 Carbon Monoxide Alert Carbon monoxide can kill. This sensitive unit not only detects this deadly gas but can automatically control the air vents in your car as well – by John Clarke 74 Serial LCD Driver Programmable Flexitimer – Page 38. Want to use an LCD with your next PC or PICAXE project? Here’s an LCD driver that’s really cheap and easy to connect – by Graeme Matthewson 82 Enhanced Sports Scoreboard This upgraded version of the Professional Sports Scoreboard now includes 2-digit fouls displays for the home and away teams – by Jim Rowe SPECIAL COLUMNS 48 Serviceman’s Log Tracking down a really rotten fault – by the TV Serviceman 70 Circuit Notebook (1) Vertical Sync For The Component Video To RGB Converter; (2) LED Noughts & Crosses; (3) Audio Level Threshold Control; (4) Cheap Pump Controller; (5) DC-DC Converter For USB Supply Or PICAXE Projects Carbon Monoxide Alert – Page 61. 90 Salvage It! Washing machine pressure switches – by Julian Edgar 94 Vintage Radio The AWA Radiola B32 transistor portable – by Rodney Champness DEPARTMENTS   2   4 99 104 Publisher’s Letter Mailbag Product Showcase Ask Silicon Chip siliconchip.com.au 107 108 109 111 Notes & Errata Order Form Market Centre Ad Index Serial LCD Driver – Page 74. August 2005  1