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NOVEMBER 1 988
FEATURES
4 Screws & Screwdrivers
by Leo Simpson
What you need to know
8 Quieten the Fan In Your Computer by Leo Simpson
We give you the options
76 The Technology Letters by Richard Kopf
Only the names have been changed
96 The Evolution of Electric Railways by Bryan Maher
Pt.13: A look at diesel electric locomotives
HERE'S A PLASMA DISPLAY
that everyone con afford. It uses
o large incandescent bulb and
on easy-to-build EHT generator.
Details page 40.
PROJECTS TO BUILD
14 High Power PA Amplifier Module by Bob Flynn
Will drive a 100V line transformer
40 Poor Man's Plasma Display by Leo Simpson
Uses an ordinary incandescent light globe
64 Build a Car Safety Light by John Clarke
Stops sideswipes at night
68 Add a Headset to the Speakerphone by Greg Swain
The modifications are easy
87 Dynamic Balancing for Electric Fans by Steve Payor
Simple yet effective technique
THIS HIGH-POWER MOSFET
amplifier module con drive a
100V line transformer for PA
work, or con be used as a guitar
amplifier. Construction starts on
page 14.
SPECIAL COLUMNS
28 The Way I See It by Neville Williams
Look out TV servicemen: VCRs are now disposable
34 Vintage Radio by John Hill
What to do about the loudspeaker
54 Serviceman's Log by the original TV serviceman
My friend (the enemy) Flicker
92 Amateur Radio by Garry Cratt
What's all this talk about SINAD?
ARE YOU INVOLVED in
electronic servicing? You 'll need
to know all about the various
types of screws and screwdrivers.
See page 4.
DEPARTMENTS
Publisher's Letter
Mailbag
Circuit Notebook
Back Issues
82 Product Showcase
2
3
32
70
90 Bookshelf
91 Subscription Page
102 Ask Silicon Chip
103 Notes & Errata
104 Market Centre
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IT'S EASY TO ADD a lightweight
headset to the Speokerphone
described in the September issue.
We show you how on page 68.
NOVEMBER1988
1