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Contents Vol.23, No.6; June 2010 SILICON CHIP www.siliconchip.com.au Features 14 Unmanned Aerial Vehicles: An Australian Perspective Silvertone is making UAVs in Australia and they are being used around the world in a range of applications – by Bob Young 21 Breakthrough Aussie Innovation: Making 3D Movies 3D television and movies are taking off but until now, 3D movie production has been very expensive. A new Australian camera rig, the SpeedWedge, promises to streamline the whole process – by Barrie Smith Unmanned Aerial Vehicles: An Australian Perspective – Page 14. 14. 40 Review: LeCroy WaveAce 112 Digital Storage Oscilloscope This 2-channel, 100MHz Digital Storage Oscilloscope takes up to 500 million samples per second, has comprehensive USB connectivity and has a wide range of features in a stylish, compact package – by Nicholas Vinen Pro jects To Build 28 Air-Quality Meter For Checking CO & CO2 Levels Easy-to-build unit indicates carbon dioxide (CO2) and carbon monoxide (CO) levels on a dual bargraph and sounds an alarm when either reaches a preset concentration. Use it if you have an unflued heater in your home, boat, caravan or any indoor space – by John Clarke 68 Dual-Tracking ±19V Power Supply, Pt.1 This 0V to ±19V dual-tracking supply can deliver up to 1.6A from each rail. It also features adjustable current limiting, a separate fixed 5V output and a 3.5-digit panel meter for voltage and current readouts – by Nicholas Vinen Air-Quality Meter For Checking CO & CO2 Levels – Page 28. 78 Build a Digital Insulation Meter Think your double-insulated power tools are safe? Unfortunately, wear and tear can make them decidedly unsafe. Check them and other electrical devices using this Digital Insulation Meter – by Jim Rowe 96 A Solar-Powered Lighting System, Pt.2 Second article has all the construction, installation and testing details – by John Clarke Special Columns 46 Serviceman’s Log Carbon based failures are all too common – by the Serviceman Dual-Tracking ±19V Power Supply – Page 68. 63 Circuit Notebook (1) Float Charger For NiMH Cells; (2) Low-Cost Gigaohm Decade Resistance Box; (3) 12V to ±24V Switched Capacitor Supply; (4) Programming Adaptor For The WIB Microcontroller; (5) Using The Voltage Interceptor With A Frequency Output Air-Flow Meter 90 Vintage Radio How AGC works and why it’s necessary, Pt.2 – by Rodney Champness Departments   2   4 20 44 Publisher’s Letter Mailbag Order Form Product Showcase siliconchip.com.au 101 105 108 110 Ask Silicon Chip Notes & Errata Back Issues Market Centre Digital Insulation Meter For Checking Power Tools – Page 78. June 2010  1