EPE_2014-12.pdf

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PORTaPal-d
– PaRT 1
•
Powerful, portable Pa
loudspeaker system
•
Class d low-distortion amplifier
• 12V Li-Po battery power
• Guitar and two microphone inputs
CONTINUE YOUR STROll dOwN mEmORY
laNE wITh
EPE
50
th
birthday edition –
Part 2
makE YOUR OwN PCB –
PaRT 4
UsinG EaGLECaD softwarE
W
MIC IN A
RE
MO ROCH
T
DE
I
MO E CO P
NT
BO
ZE
RO
AR
NA
DW L
W
AD IRELE ITH
AP
TO SS
R
ElECTRONIC BEllBIRd
mImIC ThE BEll-lIkE SOUNd Of a REal BEllBIRd
PluS:
INTERFACE, NET woRk, PIC N’ MIX,
CIRCuIT SuRgERy AND TEChNo TAlk
deC 2014 £4.40
Offer ends January 1st 2015
•
Aoyue 60W digital microprocessor-
controlled ESD safe soldering iron.
•
Large digital display easily switch
between Centigrade and Fahrenheit
•
Functions such as “pre-set favourite
temps, sleep timer, and more”
Part no
SI-9378
10% Off Sale Price
£44.21
•
Aoyue 70W multi-function PCB
work station with SMD hot air gun,
soldering iron and fume extractor.
•
A mix of digital and dial controls
•
Supplied with a host of extras such
as air gun nozzles and carbon filters.
Part no
SI-968A
10% Off Sale Price
£119.21
Exclusive Sale for Everyday Practical Electronics Readers
•
Aoyue 70W CPU controlled multi-
function PCB work station, with hot
air gun, desoldering gun, soldering
iron and fume extractor.
•
Dual port system allows
simultaneous use gun and iron
Part no
SI-2703A
10% Off Sale Price
£203.95
•
Aoyue 70W desoldering gun ideal
for removing lead components from
through hole plated PCB’s.
•
Supplied with spare nozzles and
maintenance kit for the gun.
•
Easy to use dial controls
Part no
SI-474
10% Off Sale Price
£73.84
10% Sale on everything at www.pcb-soldering.co.uk
•
For heating underside of
PCB’s whilst reworking, helping
to prevent board distortion.
•
Variable temperature setting.
•
Quartz infrared heating
surface 140mm x 140mm.
Part no
SI-853A
10% Off Sale Price
£77.90
•
Aoyue 70W soldering iron
•
Digital LED display and push
buttons for easy temperature setting.
•
Quick change soldering iron tips
•
Audible buzzer sounds when station
reaches pre-set temperature.
Part no
SI-2900
10% Off Sale Price
£66.47
ISSN 0262 3617
ProJeCtS
theorY
neWS
Comment
PoPuLAr FeAtureS
VoL. 43. no 12
December 2014
INCORPORATING ELECTRONICS TODAY INTERNATIONAL
www.epemag.com
Projects and Circuits
PortaPAL-D – PArt 1
10
by John Clarke
Battery-powered, high efficiency, class-D amplifier-based loudspeaker PA system
22
eLeCtroniC BeLLBirD
by John Clarke
Build this great Christmas or school project – a unique light-and-sound decoration
SiDrADio – An integrAteD SDr uSing A DVB-t
28
DongLe – PArt 3
by Jim Rowe
Using SDR# software to turn almost any PC into a powerful software-defined radio
Series and Features
teChno tALk
by Mark Nelson
Total hash
50 goLDen YeArS oF PrACtiCAL eLeCtroniCS – PArt 2
by Alan Winstanley
A fascinating look at the development of your magazine – the 70s onwards
net Work
by Alan Winstanley
Virus vigilance... Sneaky software
Suffering from shellshock... Securely searching
interFACe
by Robert Penfold
Raspberry Pi B+ A/D
rPiADCiSoL
by Mike Tooley
Review of the first available optically isolated 24-bit ADC board for the Pi
CirCuit SurgerY
by Ian Bell
Power MOSFET failures
mAke Your oWn PCBs – PArt 4
by Mike Hibbett
Outsourcing the manufacture of a complex design
PiC n’ miX
by Mike Hibbett
Fine-tuning our ADC skills
20
38
44
46
50
54
58
64
regulars and Services
miCroChiP reADer oFFer
EPE
Exclusive – Win a Microchip Remote Control Demo Board
With ZENA
TM
Wireless Adaptor
eDitoriAL
Another slice of Pi?... Teach-In 2015
Soldering Guide published... Audio Out and Cool Beans
neWS
– Barry Fox highlights technology’s leading edge
Plus everyday news from the world of electronics
teACh-in 5
DireCt Book SerViCe
A wide range of technical books available by mail order, plus more CD-ROMs
ePe
PCB SerViCe
PCBs for
EPE
projects
ADVertiSerS inDeX
neXt month! –
Highlights of next month’s
EPE
5
7
8
67
68
70
71
72
© Wimborne Publishing Ltd 2014. 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 January 2015 issue will be published on
Thursday 04 December 2014, see page 72 for details.
Readers’ Services • Editorial and Advertisement Departments
7
Everyday Practical Electronics, December 2014
1
Quasar Electronics Limited
PO Box 6935, Bishops Stortford
CM23 4WP, United Kingdom
Tel: 01279 467799
Fax: 01279 267799
E-mail: sales@quasarelectronics.co.uk
Web: www.quasarelectronics.co.uk
All prices INCLUDE 20.0% VAT.
Postage & Packing Options
(Up to 0.5Kg gross weight):
UK Standard 3-7
Day Delivery -
£3.95;
UK Mainland Next Day Delivery -
£8.95;
Europe
(EU) -
£12.95;
Rest of World
- £14.95 (up to 0.5Kg).
Order online for reduced price Postage (from just £1!)
Payment:
We accept all major credit/debit cards. Make PO’s payable to
Quasar Electronics Limited.
Please visit our online shop now for full details of over 1000 electronic
kits, projects, modules and publications. Discounts for bulk quantities.
Card
Sales Line
Solutions for Home, Education & Industry Since 1993
Ho! Ho! Ho! Christmas 2014 is on it's way but
We have some fantastic gift ideas for young (and older) enquiring minds
Electronic
Project Labs
An electronics course
in a box! All assume no
previous knowledge
and require NO
solder.
See website for details
Mechanical
Motorised
Wooden Kits
Robot Sensor 20 Lab
£25.95 (Code EPLR20)
Electronic Bell Kit
£9.95 (Code EAKEB)
Future engineers can
learn about the opera-
tion of
transmissions
steered through gears
or pulleys. Easy to
build, no glue or sol-
dering required.
Festive Fun
Electronic
Project Kits
Choose
from
500 plus
electronic kits. Solder-
ing required.
Electronic Motor Kit
£9.95 (Code EAKEM)
Digital Recording
Laboratory
£35.95 (Code EPLDR)
Musical LED Jingle
Bells Kit
£21.95 (Code 1176KT)
Flashing
LED
Christmas
Tree Kit
£5.16
(Code
MK100)
30 in ONE Project Lab
£22.95 (Code EPL030)
Solderless
Electronic
Projects
130 in ONE Project Lab
£55.95 (Code EPL130)
Automech Kit
£18.95 (Code C21-605)
Generator Kit
£9.95 (Code EAKEG)
Coptermech Kit
£18.95 (Code C21-604)
Room Alarm Kit
£6.95 (Code EAKRA)
AM-FM Radio Kit
£12.95 (Code
ERKAF)
300 in ONE Project Lab
£89.95 (Code EPL300)
Short Wave Kit
£2.95 (Code ERKSW)
Hand Held Metal
Detector (Assembled)
£10.95 (Code ELMDX7)
Trainmech Kit
£18.95 (Code C21-606)
Ro-
Riding Santa Kit
£14.66 (Code MK116)
bomech Kit
£18.95 (Code C21-603)
60 LED Multi-Effect LED
Star Kit
£14.48 (Code MK170)
500 in ONE Project Lab
£189.95 (Code EPL500)
Crystal Radio Kit
£11.95 (Code ERKC)
Metal Detector Kit
£10.95 (Code ELMD)
Tyrannomech Kit
£18.95 (Code C21-601)
See our website
for even more
great gift ideas!
Secure Online Ordering Facilities ● Full Product Listing, Descriptions & Photos ● Kit Documentation & Software Downloads
Tools &
Equipment
Sound LED Star Kit
£11.50
(Code MK172)
Soldering Set
£15.95 (Code 749.939)
0-20V, 2A Regulated
Bench Power Supply
£64.95 (Code PSU673)
The Electronic Kit Specialists Since 1993
LED Roulette Kit
£14.18 (Code MK119)
These educational
electronic robot kits
make a great introduc-
tion to the exciting
world of robotics. Some
require soldering. See
website for details
Robot Kits
Hobby Tool Set
£25.76 (Code 749.300)
Hobby Test Meter
£12.41 (Code 600.006)
Solar Energy
Experimenter Kit
£21.42 (Code EDU02)
MP3 Jukebox Module
£16.87 (Code VM202)
20 Piece Electronics
Tool Set
£38.96 (Code 710.368)
Robotic Arm Kit
£44.95 (Code C9895)
Digital Clamp Meter
£17.95 (Code DMC616)
Digital Echo
Chamber Kit
£19.72 (Code MK182)
USB Tutor Project
£54.24 (Code EDU05)
Oscilloscope Tutor
Project
£23.40 (Code EDU06)
Crawling Bug
Kit
with Case
£16.67 (Code MK165)
Rectangular Illuminated
Bench Top Magnifier
£89.99 (Code 700.018)
USB 3D LED Cube Kit
£23.95 (Code MK193)
Helping Hands Tool
£5.65 (Code 710.165)
One Chip AM Radio Kit
£18.95 (Code 3063KT)
Classic TV Tennis
Game with Analogue
Bats Kit
£21.04 (Code MK191)
Crawling Bug Kit
£13.78 (Code MK129)
48W Digital Soldering
Station
£72.62 (Code 703.050)
Universal Battery Test-
er
£5.88 (Code 690.393)
More Projects
& Gadgets
Running Microbot
Kit
£10.55 (Code MK127)
Stereo Valve Amplifier
Kit (Chrome Version)
£911.94 (Code K4040)
3 x 5 Amp RGB LED
Controller (+RS232) Kit
£29.95 (Code 8191KT)
Solar Bug Kit
£9.47 (Code MK185)
Advanced Personal
Scope, 2 x 240MS/s -
Probes, Cables, Battery
Pack, PSU & User
Manual Included
£274.95 (Code APS230)
Soldering Starter Pack
(inc. 2 electronic kits &
soldering tools)
£26.32 (Code EDU03)
Pocket Beta & Gamma
Radioactivity Monitor
£149.95 (Code VM200)
This is a small
selection from
our huge range
of electronic
kits & projects.
Please see web-
site for full de-
tails.
Secure Online Ordering Facilities ● Full Product Listing, Descriptions & Photos ● Kit Documentation & Software Downloads

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