Contents
Vol.11, No.6; June 1998
FEATURES
4 Troubleshooting Your PC; Pt.2
Avoiding conflicts when installing internal cards – by Bob Dyball
12 Vantis Synario Starter Software
Designing programmable logic devices – by Rick Walters
40 Understanding Electric Lighting; Pt.7
The high-pressure sodium vapour lamp
86 Special Subscriptions Offer
Troubleshooting Your PC –
Page 4
Buy a subscription before end of June 1998 and get a bonus data wallchart
PROJECTS TO BUILD
18 Universal High-Energy Ignition System
Versatile design accepts inputs from points, Hall effect and reluctor
distributors – by John Clarke
60 The Roadies’ Friend Cable Tester
Easy-to-use unit tests male-to-female XLR cables and female XLR-to6.5mm jack cables – by Paul Hoad
74 Universal Stepper Motor Controller
Use it to drive stepper motors forwards or backwards for a preset number of
revs A front-panel pot. lets you vary the speed – by Rick Walters
Universal High-Energy Ignition
System – Page 18
82 Command Control For Model Railways; Pt.5
Final article lets you choose between five throttle circuits – by Barry Grieger
SPECIAL COLUMNS
28 Serviceman’s Log
Variety: the spice of life? – by the TV Serviceman
53 Radio Control
Radio-controlled gliders; Pt.2 – by Bob Young
58 Computer Bits
The Roadies Friend
Cable Tester – Page 60
Should you buy the very latest PC – by Jason Cole
68 Vintage Radio
Look Ma, no tuning gang! – by Rodney Champness
DEPARTMENTS
2 Publisher’s Letter
33 Order Form
38 Circuit Notebook
90 Ask Silicon Chip
94 Market Centre
96 Advertising Index
Universal Stepper Motor
Controller – Page 74
June 1998 1