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Contents Vol.13, No.4; April 2000 FEATURES 6 Review: Jamo Concert 8 Loudspeaker System Interested in surround sound? This loudspeaker system has to be heard to be appreciated – by Louis Challis 10 How To Run A 3-Phase Induction Motor From 240VAC It can be done but with some loss of efficiency – by Peter Laughton 54 Atmel’s ICE 200 In-Circuit Emulator You can use it to develop and debug software for the AVR series of microcontrollers. It’s ideal for novices too – by Peter Smith 76 Mitsubishi’s Diamond View DV180 LCD Monitor A Digital Tachometer For Your Car – Page 14. If you see it, you’ll want it – by Peter Smith PROJECTS TO BUILD 14 A Digital Tachometer For Your Car Compact design features a 4-digit LED display and a bargraph. It can also provide gearchange indication and drive a rev limiter – by John Clarke 28 RoomGuard: A Low-Cost Intruder Alarm Simple design interfaces to a battery-powered smoke detector – by John Clarke 48 Build A Hot Wire Cutter RoomGuard Intruder Alarm – Page 28. It’s easy to build and lets you cut plastic foam without mess – by Leo Simpson 64 The OzTrip Car Computer; Pt.2 Building, installing and calibrating this brilliant new car computer – by Robert Priestley 72 Build A Temperature Logger Standalone unit can record up to 2048 measurements and display the results on your PC – by Mark Roberts SPECIAL COLUMNS 42 Serviceman’s Log Hot Wire Cutter – Page 48. The fault that fixed itself – by the TV Serviceman 60 Vintage Radio The Hellier Award; Pt.3 – by Rodney Champness DEPARTMENTS 4 53 59 82 Publisher’s Letter Subscriptions Form Electronics Showcase Product Showcase 88 Ask Silicon Chip 94 Market Centre 96 Advertising Index Temperature Logger – Page 72. April 2000  3