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Vol.9, No.2; February 1996
Contents
THREE REMOTE CONTROLS
TO BUILD – PAGE 76
FEATURES
4 Fluke 98 Automotive ScopeMeter
This versatile, comprehensive vehicle engine test centre fits in the palm of your
hand. Along with "on board" measurements, it has the option of later analysis of
measured data with a personal computer – by Julian Edgar
26 Racing On Air: Germany's New MagLev Train
Imagine a train without wheels, safely and almost noiselessly gliding along at
500km/h, thanks to magnetic levitation. It's not just a designer's dream – the
prototype TransRapid has already clocked up 200,000km on its test track.
PROJECTS TO BUILD
8 Fit A Kill Switch To Your Smoke Detector
A simple and cheap modification to your smoke detector will stop it shrieking every
time someone burns the toast! – by Rick Walters
12 Build A Basic Logic Trainer
Learn all about the basic operation of digital ICs. It makes a great teaching and
demonstration aid – by Rex Callaghan
22 Low Cost Multi-Tone Dashboard Alarm
Take one $4 toy phone, add a few components and you'll have a 9-tone
alarm module to alert you to a range of vehicle problems – by Julian Edgar
36 Woofer Stopper Mk 2 - Now It's Even Better!
FIT A 10-MINUTE KILL SWITCH TO
YOUR SMOKE ALARM - PAGE 8
Troubled by barking dogs in your neighbourhood? The Woofer Stopper barks back with
an ultrasonic blast that can help train Fido to be socially responsible! – by John Clarke
60 Surround Sound Mixer & Decoder - Part 2
We continue our description of a state-of-the-art mixer and decoder for surround sound:
this month, final construction details and test procedure – by John Clarke
76 Three Remote Controls To Build
Your choice of a single channel UHF, a dual channel UHF or an eight channel infrared
remote control. Full constructional details included – by Branco Justic
SPECIAL COLUMNS
A $4 TOY PHONE MAKES A GREAT
DASHBOARD ALERT – PAGE 22
54 Serviceman’s Log
The dingiest corner of a dingy room – by the TV Serviceman
85 Computer Bits
Use your personal computer as a reaction timer – by Rick Walters
88 Vintage Radio
The basics of reflex receivers – by John Hill & Rodney Champness
CONTROL BARKING DOGS WITH THE
WOOFER STOPPER Mk.2 – PAGE 36
DEPARTMENTS
2 Publisher’s Letter
7 Mailbag
25 Order Form
32 Circuit Notebook
72 Product Showcase
92 Ask Silicon Chip
94 Notes & Errata
95 Market Centre
96 Advertising Index
February 1996 1
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