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This is only a preview of the April 2012 issue of Silicon Chip. You can view 24 of the 96 pages in the full issue, including the advertisments. For full access, purchase the issue for $10.00 or subscribe for access to the latest issues. Items relevant to "1.5kW Induction Motor Speed Controller, Pt.1":
Items relevant to "SoftStarter: Taming The Surge Current Menace":
Items relevant to "A 6-Decade Resistance Substitution Box":
Items relevant to "Ultra-LD Mk.3 135W/Channel Stereo Amplifier, Pt.2":
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Contents
SILICON
CHIP
www.siliconchip.com.au
Vol.25, No.4; April 2012
Features
36 Why Is The 50Hz AC Mains Waveform Distorted?
Theory tells us that the 50Hz AC mains waveform is a pure sinewave but in
practice it’s often distorted because the peaks have been clipped off. Here’s
why – by Leo Simpson
42 Review: MikroElektronika EasyPIC v7 Development Board
It provides an easy way to program & debug 8-bit PIC micros & can be used
with the C, Pascal & BASIC programming languages – by Nicholas Vinen
1.5kW Induction Motor
Speed Controller – Page 16.
80 Q & A On The Maximite Microcomputer
A look at the six most common problems encountered by constructors plus
some questions & answers on this popular design – by Geoff Graham
Pro jects To Build
16 1.5kW Induction Motor Speed Controller, Pt.1
Versatile unit will drive virtually any modern 3-phase induction motor or any
single-phase motor that does not contain a centrifugal switch. It’s rated at up
to 1.5kW (2HP) & can control speed over a wide range – by Andrew Levido
28 SoftStarter: Taming The Surge Current Menace
SoftStarter: Taming The
Surge Current Menace –
Page 28.
28.
38 A 6-Decade Resistance Substitution Box
6-Decade Resistance
Substitution Box –
Page 38.
Do you get a juicy “splattt” from your mains power point when you plug in a
large plasma TV set or some other piece of gear? Our SoftStarter solves this
problem while having no effect on appliance performance – by Nicholas Vinen
It’s easy to build and lets you select from thousands of different resistance
values between 10Ω and 10MΩ using six rotary switches. When you have
found the optimum, just read off the value on the switches – by Jim Rowe
60 Ultra-LD Mk.3 135W/Channel Stereo Amplifier, Pt.2
Second article on our new high-performance stereo amplifier completes the
assembly and describes the test & adjustment procedure – by Greg Swain
Special Columns
54 Serviceman’s Log
The earthquakes finally killed my TV set – by the Serviceman
70 Circuit Notebook
(1) Using Mosfets For Reverse Polarity Protection; (2) Simple Water Level
Alarm; (3) 433MHz Garage Door Position Monitor; (4) 12/24V Vehicle
Instrument Panel
82 Vintage Radio
Philips 196A 4-valve portable receiver – by Rodney Champness
Departments
2
4
53
89
Publisher’s Letter
Mailbag
Product Showcase
Order Form
siliconchip.com.au
90 Ask Silicon Chip
94 Notes & Errata
95 Market Centre
Ultra-LD Mk.3 135W/Channel
Stereo Amplifier, Pt.2 – Page 60.
Note: part 3 of the SemTest has
been held over until May 2012.
April 2012 1
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