Contents
Vol.10, No.1; January 1997
FEATURES
4 Networking: It’s Easier Than You Think
Networking two computers doesn't cost much, is easy to do & has lots of
benefits. We show you how it’s done – by Greg Swain
14 Hybrid Power For Heavy Vehicles
Not just low pollution – no pollution. ABB/Volvo’s new concept heavy vehicles
are powered by a hybrid gas-turbine/electric drive system.
20 Stop Blowing Incandescent Lights
Are you constantly blowing household lamps because your mains power is
higher than normal. Here’s how to overcome the problem – by Leo Simpson
55 Neville Williams – A Tribute
The passing of a respected journalist & editor in electronics magazine publishing – by Leo Simpson
PROJECTS TO BUILD
NETWORKING: IT’S EASIER THAN
YOU THINK – PAGE 4
CONTROL
PANEL FOR
MULTIPLE
SMOKE
ALARMS –
PAGE 24
24 Control Panel For Multiple Smoke Alarms
This unit will power and monitor up to 10 smoke detectors, with provision to
silence two detectors for a preset period – by John Clarke
40 Build A Pink Noise Source
Use it to calibrate the Sound Level Meter described last month, or to set
signal levels in multi-channel or PA systems – by John Clarke
56 Computer Controlled Dual Power Supply; Pt.1
You can use your PC to control this power supply. It provides dual supply rails
and delivers up to ±25.5V and up to 2.55A – by Rick Walters
80 Digi-Temp Monitors Eight Temperatures
Monitor the temperature at up to eight different locations using this device.
It covers the range from -50°C to 99.9°C and you can log the results into a
computer – by Graham Blowes
SPECIAL COLUMNS
38 Computer Bits
Drawing circles in GW-Basic – by Rick Walters
69 Serviceman’s Log
COMPUTER CONTROLLED DUAL
POWER SUPPLY; PT.1 – PAGE 56
The fireball TV set from hell – by the TV Serviceman
74 Vintage Radio
A new life for some old headphones – by John Hill
DEPARTMENTS
2
11
32
53
Publisher’s Letter
Order Form
Circuit Notebook
Product Showcase
93 Ask Silicon Chip
95 Market Centre
96 Advertising Index
DIGI-TEMP MONITORS EIGHT
TEMPERATURES – PAGE 80
January 1997 1