EPE_2015-11.pdf

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CURRAWONG VALVE AMPLIFIER
• Stereo 2 x 10W per channel
• Low distortion and noise
• Easy-to-build design
• Remote control option
WIN A
MICRO
CHIP
MOTO
R CON
TR
START
ER KIT OL
WITH
mTOU
CH SE
NSING
DEMO
BOARD
48V DUAL PHANTOM POWER SUPPLY
Superb design for microphones and preamplifiers
PROGRAMMABLE MAINS TIMER
Versatile switch to control power as and when you need it
Electronic Building Blocks
P LU S
TEACH-IN 2015, PRACTICALLY SPEAKING,
CIRCUIT SURGERY, NET WORK, AUDIO OUT,
TECHNO TALK, HOT BEANS & PIC n’ MIX
NOV 2015 £4.40
ISSN 0262 3617
PROJECTS
THEORY
NEWS
COMMENT
POPULAR FEATURES
VOL. 44. No 11
November 2015
INCORPORATING ELECTRONICS TODAY INTERNATIONAL
www.epemag.com
Projects and Circuits
THE CURRAWONG 2 × 10W STEREO VALVE AMPLIFIER – PART 1
by Nicholas Vinen
A fantastic design for audiophiles – the best of old-style amplifier design
coupled with modern technology and construction techniques.
48V DUAL PHANTOM POWER SUPPLY FOR DI BOXES AND
CONDENSER MICROPHONES
by John Clarke
Build this superb power supply for high-quality live music electronic equipment.
PROGRAMMABLE MAINS TIMER WITH REMOTE SWITCHING
by John Clarke
This versatile, easy-to-program timer offers a cornucopia of useful applications
for remote-controlled mains switches.
12
24
30
Series and Features
TECHNO TALK
by Mark Nelson
Copper mountains and zinc whiskers
TEACH-IN 2015 – DISCRETE LINEAR CIRCUIT DESIGN
by Mike and Richard Tooley
Part 10: Summing up
NET WORK
by Alan Winstanley
Fifty shades of grey icons... Command prompt
Dangerous deliveries... An inside job?
PRACTICALLY SPEAKING
by Robert Penfold
Circuit diagrams and symbols
CIRCUIT SURGERY
by Ian Bell
Analogue switches – Part 1
PIC n’ MIX
by Mike O’Keeffe
Review of PIC32 Touch Development Board
AUDIO OUT
by Jake Rothman
Speaking volumes – Part 1
MAX’S HOT BEANS
by Max The Magnificent
mCookie Monster... Simblee delightful, my dear
ELECTRONIC BUILDING BLOCKS
by Julian Edgar
Electronic stethoscope for machinery
11
40
48
52
56
60
64
74
76
Regulars and Services
Electronic Building
Blocks
By Julian
Edgar
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EDITORIAL
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NEWS
– Barry Fox highlights technology’s leading edge
Plus everyday news from the world of electronics
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mTouch Sensing Demo Board
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© Wimborne Publishing Ltd 2015. 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 December 2015 issue will be published on
Thursday 5 November 2015, see page 80 for details.
Readers’ Services • Editorial and Advertisement Departments
7
Everyday Practical Electronics, November 2015
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 (including FREE over £35+VAT)
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 2015 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
£11.95 (Code EAKEB)
Festive Fun
Electronic
Project Kits
Future engineers can
learn about the opera-
tion of transmissions
steered through gears
or pulleys. Easy to build,
no glue or soldering
Choose from 500 plus
electronic kits. Solder-
ing required.
Electronic Motor Kit
£11.95 (Code EAKEM)
Digital Recording
Laboratory
£35.95 (Code EPLDR)
Musical LED Jingle
Bells Kit
£21.95 (Code 1176KT)
Flashing
LED
Christmas
Tree Kit
£4.62
(Code
MK100)
30 in ONE Project Lab
£24.95 (Code EPL030)
Automech Kit
£15.95 (Code C21-605)
Generator Kit
£11.95 (Code EAKEG)
Solderless
Projects
130 in ONE Project Lab
£55.96 (Code EPL130)
Coptermech Kit
£15.95 (Code C21-604)
Room Alarm Kit
£4.95 (Code EAKRA)
AM-FM Radio Kit
£14.95 (Code
ERKAF)
300 in ONE Project Lab
£79.95 (Code EPL300)
Short Wave Kit
£14.95 (Code ERKSW)
Hand Held Metal
Detector (Assembled)
£7.95 (Code ELMDX7)
Trainmech Kit
£15.95 (Code C21-606)
Riding Santa Kit
£13.14 (Code MK116)
Robomech Kit
£15.95 (Code C21-603)
60 LED Multi-Effect LED
Star Kit
£11.94 (Code MK170)
500 in ONE Project Lab
£1789.95 (Code EPL500)
Crystal Radio Kit
£11.95 (Code ERKC)
Metal Detector Kit
£8.95 (Code ELMD)
Tyrannomech Kit
£15.95 (Code C21-601)
See website for
even more
great gift ideas!
Secure Online Ordering Facilities ● Full Product Listing, Descriptions & Photos ● Kit Documentation & Software Downloads
Tools &
Equipment
£10.74 (Code MK172)
Soldering Set
£12.95 (Code 749.939)
0-20V, 2A Regulated
Bench Power Supply
£65.28 (Code 650.673)
Sound LED Star Kit
The Electronic Kit Specialists Since 1993
LED Roulette Kit
£11.46 (Code MK119)
Robot Kits
These educational elec-
tronic robot kits make a
great introduction to the
exciting world of robot-
ics. Some require sol-
dering. See website for
details
Hobby Tool Set
£20.16 (Code 749.300)
Hobby Test Meter
£7.67 (Code 600.006)
Solar Energy
Experimenter Kit
£15.42 (Code EDU02)
MP3 Jukebox Module
£14.34 (Code VM202)
20 Piece Electronics
Tool Set
£34.96 (Code 710.368)
Robotic Arm Kit
£41.81 (Code C9895)
Digital Clamp Meter
£11.96 (Code DMC616)
Digital Echo
Chamber Kit
£10.74 (Code MK182)
USB Tutor Project
£54.24 (Code EDU05)
Oscilloscope Tutor
Project
£17.40 (Code EDU06)
Crawling Bug
Kit
with Case
£14.34 (Code MK165)
Rectangular Illuminated
Bench Top Magnifier
£45.12 (Code 700.015)
USB 3D LED Cube Kit
£20.34 (Code MK193)
Helping Hands Tool
£4.01 (Code 710.165)
One Chip AM Radio Kit
£16.96 (Code 3063KT)
Classic TV Tennis
Game with Analogue
Bats Kit
£15.54 (Code MK191)
Crawling Bug Kit
£11.94 (Code MK129)
48W LED Soldering
Station
£54.24 (Code 703.100)
Universal Battery
Tester
£3.17 (Code 690.393)
More Projects
& Gadgets
Running Microbot Kit
£8.34 (Code MK127)
Stereo Valve Amplifier
Kit (Chrome Version)
£908.68 (Code K4040)
3 x 5 Amp RGB LED
Controller (+RS232) Kit
£24.95 (Code 8191KT)
Solar Bug Kit
£9.06 (Code MK185)
Advanced Personal
Scope, 2 x 240MS/s -
Probes, Cables, Battery
Pack, PSU & User
Manual Included
£263.72 (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 very
small selection
from our huge
range of elec-
tronic kits &
projects. Please
see website for
full details.
Secure Online Ordering Facilities ● Full Product Listing, Descriptions & Photos ● Kit Documentation & Software Downloads

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