Silicon ChipContents - July 2009 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: Natural gas means geosequestration is unnecessary
  4. Feature: The Magic Of Water Desalination by Geoff Graham
  5. Review: Two Low-Cost DVD Recorders by Barrie Smith
  6. Project: Lead-Acid Battery Zapper & Desulphator Mk.3 by Jim Rowe
  7. Project: Hand-Held Metal Locator by John Clarke
  8. Project: Multi-Function Active Filter Module by John Clarke
  9. Feature: CeBIT: What’s New At Australia’s Largest IT Show? by Ross Tester
  10. Project: High-Current, High-Voltage Battery Capacity Meter, Pt.2 by Mauro Grassi
  11. Vintage Radio: The Lyric 8-Valve Console From The 1920s by Rodney Champness
  12. Book Store
  13. Advertising Index
  14. Outer Back Cover

This is only a preview of the July 2009 issue of Silicon Chip.

You can view 33 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 "Lead-Acid Battery Zapper & Desulphator Mk.3":
  • Lead-Acid Battery Zapper and Desulphator Mk.3 PCB [04107091] (AUD $20.00)
  • Lead-Acid Battery Zapper & Desulphator Mk.3 PCB pattern (PDF download) [04107091] (Free)
  • Lead-Acid Battery Zapper & Desulphator Mk.3 front panel artwork (PDF download) (Free)
Items relevant to "Hand-Held Metal Locator":
  • Hand-Held Metal Locator PCB [04207091] (AUD $5.00)
  • Hand-Held Metal Locator PCB pattern (PDF download) [04207091] (Free)
  • Hand-Held Metal Locator front panel artwork (PDF download) (Free)
Items relevant to "Multi-Function Active Filter Module":
  • Multi-Function Active Filter PCB [01107091] (AUD $15.00)
  • Multi-Function Active Filter Module PCB pattern (PDF download) [01107091] (Free)
Items relevant to "High-Current, High-Voltage Battery Capacity Meter, Pt.2":
  • PIC18F2550-I/SP programmed for the Battery Capacity Meter [0420609A.HEX] (Programmed Microcontroller, AUD $20.00)
  • PIC18F2550 firmware and source code for the High-Current, High-Voltage Battery Capacity Meter (Software, Free)
  • High-Current, High-Voltage Battery Capacity Meter PCB pattern (PDF download) [04206091] (Free)
  • High-Current, High-Voltage Battery Capacity Meter front panel artwork (PDF download) to suit Altronics LCD (Free)
  • High-Current, High-Voltage Battery Capacity Meter front panel artwork (PDF download) to suit Jaycar LCD (Free)
Articles in this series:
  • High-Current, High-Voltage Battery Capacity Meter, Pt.1 (June 2009)
  • High-Current, High-Voltage Battery Capacity Meter, Pt.1 (June 2009)
  • High-Current, High-Voltage Battery Capacity Meter, Pt.2 (July 2009)
  • High-Current, High-Voltage Battery Capacity Meter, Pt.2 (July 2009)

Purchase a printed copy of this issue for $10.00.

Contents Vol.22, No.7; July 2009 www.siliconchip.com.au SILICON CHIP Features 12 The Magic Of Water Desalination The driest continent on Earth is about to get much more drinking water from the sea, thanks to new desalination plants. Here’s a look at how they work – by Geoff Graham The Magic Of Water Desalination – Page 12. 20 Review: Two Low-Cost DVD Recorders Thinking of retiring that ancient VCR and getting a DVD recorder? Here’s a look at two low-cost units: the Tevion DD1018 & the AWA DR711 – by Barrie Smith Lead-Acid Battery Zapper & Desulphator Mk.3 – Page 26. 78 CeBIT: What’s New At Australia’s Largest IT Show? There’s lots to see at CeBIT. We took a stroll around the displays to bring you this report – by Ross Tester Pro jects To Build 26 Lead-Acid Battery Zapper & Desulphator Mk.3 Rejuvenate old lead-acid batteries by zapping them with high-voltage pulses to dissolve the lead-sulphate crystals on their plates. It works with 6V, 12V & 24V batteries & is easy to build – by Jim Rowe 38 Hand-Held Metal Locator Compact unit is ideal for finding steel frames & studs, steel bracing & nails in plaster walls. And it can discriminate between ferrous and non-ferrous metals – by John Clarke 58 Multi-Function Active Filter Module Versatile design is ideal for use as an active crossover in loudspeaker systems but has other uses as well. It can be configured as a low-pass filter, as a highpass filter or as a bandpass filter using on-board jumpers – by John Clarke 80 High-Current, High-Voltage Battery Capacity Meter, Pt.2 Hand-Held Metal Locator – Page 38 This month, we guide you through the once-only setup and calibration procedure. We also tell you how to use it – by Mauro Grassi Special Columns 70 Circuit Notebook (1) RF Preamplifier For World-Band Receivers; (2) Signal Inverter Runs From 5V Rail; (3) Simple Water Spillage Alarm; (4) Accurate Timer Locked To 50Hz Mains Supply; (5) Enhanced Software For The Appliance Energy Meter 44 Serviceman’s Log Car electronics: a whole new ballgame – by the Serviceman 89 Vintage Radio The Lyric 8-Valve Console From The 1920s – by Rodney Champness Departments   2   4 19 37 Publisher’s Letter Mailbag Subscriptions Order Form siliconchip.com.au 57 96 99 102 Product Showcase Ask Silicon Chip Notes & Errata Market Centre Multi-Function Active Filter Module – Page 58. July 2009  1