Download EPE 2002

ISSN 0262 3617
PROJECTS . . . THEORY . . . NEWS . . .
COMMENTS . . . POPULAR FEATURES . . .
VOL. 31. No. 4 APRIL 2002
Cover illustration by Jonathan Robertson
www.epemag.wimborne.co.uk
EPE Online: www.epemag.com
Projects and Circuits
ELECTRIC GUITAR TUNER by Robert Penfold
236
Six fixed frequencies and an l.e.d. help you to stay in tune
INGENUITY UNLIMITED hosted by Alan Winstanley
246
Switch Mode Regulators; Lottery Predictor
PIC CONTROLLED INTRUDER ALARM by John Becker
260
A sophisticated multi-zone intruder detection system that offers deluxe
monitoring facilities
MANUAL STEPPER MOTOR CONTROLLER by Thomas Scarborough 274
Illustrates how a 4-phase stepper motor can be controlled bi-directionally
using a conventional rotary switch
SOLAR CHARGE AND GO by Terry de Vaux-Balbirnie
286
Use solar power to charge your 2·4V or 3·4V NiCad and nickel metal hydride
mobile phone batteries
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
240
FinFET devices feature ultra-thin silicon fins that further-reduce chip sizes
TEACH-IN 2002 – 6. Magnetic Sensors, Interference and Noise,
248
with experiments by Ian Bell and Dave Chesmore
INTERFACE by Robert Penfold
258
PC Serial Port Interfacing
NET WORK – THE INTERNET PAGE surfed by Alan Winstanley
273
Java applets speed EPE online ordering; JBMail helps reduce spam
ELECTRONIC PRINCIPLES V7.1 REVIEW by Robert Penfold
278
The range of V7.1 is vast, offering tutorials on various aspects of computing,
electronics, maths, physics, etc., with interactive screens
PROGRAMMING PIC INTERRUPTS – 2 by Malcolm Wiles
291
How to use interrupts successfully with your PIC programs
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
299
More on grounded and floating supply lines; Charging Yaesu transceiver
batteries; Eco Warrior battery charging
Regulars and Services
© Wimborne Publishing Ltd 2002. Copyright in all
drawings, photographs and articles published in
EVERYDAY PRACTICAL ELECTRONICS is fully
protected, and reproduction or imitations in whole or
in part are expressly forbidden.
Our May 2002 issue will be published on Thursday,
11 April 2002. See page 227 for details
Everyday Practical Electronics, April 2002
ELECTRONICS MANUALS
Essential reference works for hobbyists, students and service engineers
EDITORIAL
ELECTRONICS VIDEOS Our range of educational videos
NEWS – Barry Fox highlights technology’s leading edge
Plus everyday news from the world of electronics
BACK ISSUES Did you miss these? Many now on CD-ROM!
READOUT John Becker addresses general points arising
CD-ROMS FOR ELECTRONICS
A wide range of CD-ROMs for hobbyists, students and engineers
SHOPTALK with David Barrington,
The essential guide to component buying for EPE projects
PLEASE TAKE NOTE PIC Virus Zapper; Dog and Cat Scarer (I/U)
DIRECT BOOK SERVICE
A wide range of technical books available by mail order, plus more CD-ROMs
PRINTED CIRCUIT BOARD AND SOFTWARE SERVICE
PCBs for EPE projects. Plus EPE software
ADVERTISERS INDEX
FREE GIANT OP.AMP DATA CHART
230
235
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270
282
284
290
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296
301
304
Between pages 264/265
Readers Services ) Editorial and Advertisement Departments 235
225