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Contents Vol.13, No.7; July 2000 FEATURES 4 Say Bye-Bye To Your 12V Car Battery The days of 12V car electrical systems are numbered. Radical changes are just around the corner – by Julian Edgar 72 Review: Motech MT-4080A LCR Meter Versatile instrument can also check a raft of parameters, including Quality factor, phase angle, dissipation factor and ESR – by Leo Simpson 80 Review: ADEM Compac II Security System Is there an intruder on your premises? This clever system lets you know then lets you listen in – by Ross Tester Home Satellite TV System For Less Than $50 – Page 10. PROJECTS TO BUILD 10 A Home Satellite TV System For Less Than 50 Bucks Tune into TV signals on the Optus B1 satellite with this surplus gear. $50 buys you all the bits – by Ross Tester & Garry Cratt 18 A Moving Message Display It’s easy to build, easy to program, easy on the pocket and easy on the eye – by Atilla Aknar & Ross Tester 30 Compact Fluorescent Lamp Driver Moving Message Display – Page 18. Operates from a 12V DC supply and can drive up to four 9W CFLs at full brightness. Use it as part of a solar power installation or anywhere you require good lighting without mains power – by John Clarke 42 El-Cheapo Musicians’ Lead Tester Checking leads is a snap with this handy tester – by John Clarke 60 Li’l PowerHouse Switchmode Power Supply; Pt.2 Second article has all the construction details. And we’ve improved the output filtering for even better performance – by Peter Smith & Leo Simpson SPECIAL COLUMNS 54 Serviceman’s Log Big is not always beautiful – by the TV Serviceman Compact Fluorescent Lamp Driver – Page 30. 82 Vintage Radio The AWA P1 portable 11-inch B/W TV set – by Rodney Champness DEPARTMENTS 2 53 59 70 74 Publisher’s Letter Subscriptions Form Mailbag Circuit Notebook Product Showcase 90 92 93 94 96 Ask Silicon Chip Notes & Errata Electronics Showcase Market Centre Advertising Index Musicians’ Lead Tester – Page 42 JULY 2000  1