Contents
Vol.11, No.2; February 1998
FEATURES
4 Surplus Mania: Hot Web Sites For Bits
Looking for that special hard-to-find part? You can find lots of goodies at
various web sites on the Internet – by Adrian Cuesta
12 Understanding Electric Lighting; Pt.4
The development and operation of high pressure mercury vapour lamps – by
Julian Edgar
Multi-Purpose Fast Battery
Charger – Page 18
PROJECTS TO BUILD
18 Multi-Purpose Fast Battery Charger; Pt.1
New design fast charges NiCd and NiMH power tool batteries and can
charge 6V and 12V SLA and car batteries as well – by John Clarke
25 Telephone Exchange Simulator For Testing
Use it to test telephone handsets, fax machines, modems, answering machines and automatic diallers in burglar alarms – by Mike Zenere
36 Command Control System For Model Railways; Pt.2
Get your soldering iron out because it’s time to build the Command Station
module. We give the full circuit and construction details – by Barry Grieger
60 Demonstration Board For Liquid Crystal Displays
Telephone Exchange Simulator
For Testing – Page 25
Learn how liquid crystal displays process digital data with this neat little
demo board – by Rick Walters
66 Build Your Own 4-Channel Lightshow; Pt.2
We give the constructional details for both DC and AC versions plus some
hints on making a display box – by Leo Simpson & Rick Walters
SPECIAL COLUMNS
56 Serviceman’s Log
The TV set that smoked – by the TV Serviceman
76 Vintage Radio
Clean audio for old Henry – by John Hill
Demonstration Board For Liquid
Crystal Displays – Page 60
80 Radio Control
Jet engines in model aircraft; Pt.2 – by Bob Young
88 Computer Bits
Norton Utilities V2 for Win95; Pt.2 – by Jason Cole
DEPARTMENTS
2
34
44
53
Publisher’s Letter
Mailbag
Order Form
Product Showcase
86
91
94
96
Circuit Notebook
Ask Silicon Chip
Market Centre
Advertising Index
Building The 4-Channel Light
Show – Page 66
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