Silicon ChipContents - June 2007 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Business energy use can be greatly reduced
  4. Feature: VAF’s New Soundwall by Ross Tester
  5. Feature: Turntables – Give ’em A Spin; Pt.2 by Barrie Smith
  6. Review: ADS Technologies "Instant Music" by Silicon Chip
  7. Project: 20W Class-A Amplifier Module; Pt.2 by Leo Simpson
  8. Project: A Knock Detector For The Programmable Ignition by John Clarke
  9. Project: Versatile 4-Input Mixer With Tone Controls by Jim Rowe
  10. Project: Fun With The New PICAXE 14-M by Stan Swan
  11. Feature: The Latest PICAXE Developments by Clive Seager
  12. Project: Frequency-Activated Switch For Cars by John Clarke & Julian Edgar
  13. Feature: A Flying Visit To CeBIT Australia 2007 by Ross Tester
  14. Vintage Radio: DC-To-AC Inverters From The Valve Era by Rodney Champness
  15. Book Store
  16. Advertising Index

This is only a preview of the June 2007 issue of Silicon Chip.

You can view 35 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.

Articles in this series:
  • Turntables – Give ’em A Spin (May 2007)
  • Turntables – Give ’em A Spin; Pt.2 (June 2007)
Items relevant to "20W Class-A Amplifier Module; Pt.2":
  • Preamp & Remote Volume Control PCB for the Ultra-LD Mk3 [01111111] (AUD $30.00)
  • Speaker Protection and Muting Module PCB [01207071] (AUD $17.50)
  • 20W Class-A Amplifier Power Supply PCB [01105074] (AUD $20.00)
  • 20W Class-A Amplifier Module PCB, left channel [01105071] (AUD $15.00)
  • 20W Class-A Amplifier Module PCB, right channel [01105072] (AUD $15.00)
  • PIC16F88-I/P programmed for the Low Noise Stereo Preamplifier with Remote Volume Control (Programmed Microcontroller, AUD $15.00)
  • PIC16F88 firmware and source code for the Low Noise Preamplifier with Remote Volume Control (Software, Free)
  • Speaker Protector and Muting Module PCB pattern (PDF download) [01207071] (Free)
  • 20W Class A Low Noise Stereo Preamplifier/Remote Volume Control PCB pattern (PDF download) [01208071] (Free)
  • 20W Class A Amplifier Module PCB patterns (PDF download) [01105071/2] (Free)
  • 20W Class A Amplifier Power Supply PCB pattern (PDF download) [01105073] (Free)
Articles in this series:
  • A 20W Class-A Amplifier Module (May 2007)
  • 20W Class-A Amplifier Module; Pt.2 (June 2007)
  • 20W Class-A Amplifier Module; Pt.3 (July 2007)
  • 20W Class-A Amplifier Module; Pt.4 (August 2007)
  • Building The 20W Stereo Class-A Amplifier; Pt.5 (September 2007)
Items relevant to "A Knock Detector For The Programmable Ignition":
  • Programmable Ignition System main PCB [05104071] (AUD $10.00)
  • Programmable Ignition System Trigger Module PCB [05104072] (AUD $5.00)
  • Programmable Ignition System Hand Controller PCB [05104073] (AUD $10.00)
  • PIC16F88-E/P programmed for the Programmable Ignition System [ignprgm.hex] (Programmed Microcontroller, AUD $15.00)
  • PIC16F88 firmware and source code for the Programmable Ignition System (Software, Free)
  • Sample timing maps for the Programmable Ignition System (Software, Free)
  • Programmable Ignition System PCB patterns (PDF download) [05104071/2/3] (Free)
  • Programmable Ignition System front panel artwork (PDF download) (Free)
  • Knock Detector PCB [05106071] (AUD $7.50)
  • Knock Detector PCB pattern (PDF download) [05106071] (Free)
Articles in this series:
  • Programmable Ignition System For Cars; Pt.1 (March 2007)
  • Programmable Ignition System For Cars; Pt.2 (April 2007)
  • Programmable Ignition System For Cars; Pt.3 (May 2007)
  • A Knock Detector For The Programmable Ignition (June 2007)
Items relevant to "Versatile 4-Input Mixer With Tone Controls":
  • Versatile 4-Input Mixer PCB pattern (PDF download) [01106071] (Free)
  • Versatile 4-Input Mixer panel artwork (PDF download) (Free)
Items relevant to "Fun With The New PICAXE 14-M":
  • PICAXE-14M BASIC source code for "Fun with the new PICAXE-14M" (Software, Free)
Items relevant to "Frequency-Activated Switch For Cars":
  • Frequency Switch PCB pattern (PDF download) [05car051] (Free)

Purchase a printed copy of this issue for $10.00.

Contents Vol.20, No.6; June 2007 SILICON CHIP www.siliconchip.com.au Features 10 VAF’s New Soundwall Is it a wall or is it a loudspeaker? – by Ross Tester 12 Turntables – Give ’em A Spin; Pt.2 We look at the software you’ll need to clean up those old vinyl recordings and save them to CD – by Barrie Smith 78 The Latest PICAXE Developments PICAXE designers Revolution Education Ltd have been hard at work. Here’s a look at the latest developments in the PICAXE world – by Clive Seager Building Mirror Image Class-A Amplifier Modules – Page 20. 86 A Flying Visit To CeBIT Australia 2007 There were lots of interesting products at this year’s show – by Ross Tester Pro jects To Build 20 20W Class-A Amplifier Module; Pt.2 Building mirror-image left and right channel modules, plus power supply circuit and assembly details – by Leo Simpson 42 A Knock Detector For The Programmable Ignition Use it to help program ignition timing and/or to automatically retard the ignition timing in response to engine knock levels – by John Clarke 58 Versatile 4-Input Mixer With Tone Controls Knock Detector For The Programmable Ignition – Page 42. New design features tone controls, a headphone amplifier and four low-noise inputs that can be configured to suit your signal sources – by Jim Rowe 75 Fun With The New PICAXE 14-M Here’s a close-up look at the new kid on the block – by Stan Swan 82 Frequency-Activated Switch For Cars A cheap, adjustable design that lets you switch devices on and off according to speed – by John Clarke & Julian Edgar 89 Simple Panel Meters Revisted Woops!! Several readers have had problems but not of their own making – by Ross Tester Special Columns 38 Circuit Notebook (1) Simple Battery Isolator; (2) Using The PICAXE In SPI Mode; (3) LED Stroboscope Uses A Frequency Counter To Measure RPM; (4) Egg Timer 4-Channel Mixer – Page 58. 70 Serviceman’s Log The need to eat and pay bills – by the TV Serviceman 90 Vintage Radio DC-To-AC Inverters From The Valve Era – by Rodney Champness Departments   4   6 57 81 Publisher’s Letter Mailbag Product Showcase Order Form siliconchip.com.au 96 Ask Silicon Chip 99 Notes & Errata 102 Market Centre Frequency Switch For Cars – Page 82. June 2007  1