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Contents Vol.19, No.7; July 2006 FEATURES    8 MoTeC Race Car Data Logging Want to monitor racing car performance data in real time? This innovative system from MoTeC delivers the goods – by Julian Edgar SILICON CHIP www.siliconchip.com.au Mini Theremin Mk.2 – Page 24. 14 Television: The Elusive Goal; Pt.2 The introduction of television 50 years ago captured the imagination of the nation. It wasn’t without its problems, however – by Kevin Poulter PROJECTS TO BUILD 24 Mini Theremin Mk.2; Pt.1 It’s our best Theremin yet and is easy to build. Just move your fingers near the antennas to create your own electronic music – by John Clarke 40 Programmable Analog On-Off Controller Want to fill or empty a water tank automatically or control some other device based on an analog input signal? This easy-to-build controller has an LCD panel and two independently programmable relay outputs – by Greg Radion 64 Studio Series Stereo Preamplifier At last! . . . here’s how to assemble your high-performance Studio Series preamplifier modules into a professional-quality case. The result is superb hifi sound reproduction – by Peter Smith 80 PC Controlled Mains Switch Mk.2 It connects to your PC’s parallel port and lets you independently control two mains sockets (GPO) using Windows based software – by Tent Jackson 92 Stop Those Zaps From Double-Insulated Equipment Ever experienced mild shocks from double-insulated equipment, such as DVD players? If so, you need the “Tingle Terminator” – by John Clarke SPECIAL COLUMNS Programmable Analog On-Off Controller – Page 40. 48 Serviceman’s Log Looks like a duck, quacks like a duck – by the TV Serviceman 73 Salvage It! There are lots of good bits inside junked photocopiers – by Julian Edgar 97 Vintage Radio AWA B33: the ultimate Australian-made transistor portable – by Rodney Champness 102 Circuit Notebook (1) Mains Frequency Monitor; (2) RC Phase-Shift Oscillator; (3) How To Add Tick’n’Tock To A Quartz Clock; (4) Judging System For Photography Clubs DEPARTMENTS   2   4 61 62 Publisher’s Letter Mailbag Order Form Product Showcase siliconchip.com.au 105 107 110 112 Ask Silicon Chip Notes & Errata Market Centre Ad Index Studio Series Stereo Preamplifier – Page 64. July 2006  1