March 1991
THIS REMOTE control circuit is
specially designed for operating
garage doors, gates or other
appliances. See page 16.
FEATURES
6 Electric Vehicles, Pt.3 by Gerry Nolan
Motor control - the part played by electronics
10 Solar Electric Speed Record In Australia by Gerry Nolan
How the record was finally broken
38 Data On The LM383 7W Audio Amplifier by Darren Yates
Plenty of power from a tiny package
82 The Story Of Electrical Energy, Pt.8 by Bryan Maher
High-voltage DC transmission systems
89 Bose Lifestyle Music System Subscription Offer
And the winners are ...
CHECK TRANSISTORS for gain
& identify their leads with this
simple instrument. We show you
how to build it starting page 32.
PROJECTS TO BUILD
16 Remote Controller For Garage Doors by Branco Justic
The transmitter comes pre-built; you build the control unit
32 Transistor Beta Tester Mk.2 by John Clarke
Revised design also measures low-beta transistors
50 Synthesised AM Stereo Tuner, Pt.2 by John Clarke
PC board
&
chassis assembly details
66 Multi-purpose 1/0 Board For IBM PCs by Graham Dicker
Use your PC to control external devices
SPECIAL COLUMNS
26 Serviceman's Log by the TV Serviceman
WANT TO USE your PC to
control external devices such as
appliances & motors. Take a look
at this multi-purpose 1/0 board
on page 66.
The case of the worn video heads
42 Vintage Radio by Jolin Hill
Automatic gain control: what it is & how it works
62 Computer Bits by Jennifer Bonnitcha
Config.sys. Ansi.sys & all that stuff
70 Amateur Radio by Garry Cratt
A universal widr!hand RF preamplifier
74 Remote Control by Bob Young
The development of digital proportional servos
DEPARTMENTS
3 Publisher's Letter
4 Mailbag
46 Circuit Notebook
58 Back Issues
80 Product Showcase
2
SILICON CHIP
92 Ask Silicon Chip
94 Subscription Page
95 Market Centre
96 Advertising Index
THIS RF PREAMPLIFIER can be
used with shortwave receivers,
for boosting signals into a frequency counter, or to boost
signals from your TV antenna.
Details page 70.
PLEASE NOTE: the second
article on amplifier design has
been held over due to lack of
space. This article will appear
in next month's issue.