Elektor_2008_07-08.pdf
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www.elektor.com JULY/AUGUST 2008
AUS$ 16.95 - NZ$ 21.50 - SAR 99.95 - US$ 15.95
£ 5.80
electronics worldwide
supersize
summer issue
100
circuits, ideas & tips
R34
a trip to Ch ina!
or one of the marvellous prizes from our scratch lottery!
with more than
Water Tank Level Kits
PIC Based Water Tank
Level Meter Kit
KC-5460 £29.00 + postage & packing
This PIC-based unit uses a pressure sensor to monitor
water level and will display tank level via an RGB LED at
the press of a button. The kit can be expanded to include
and optional wireless remote display panel that can
monitor up to ten separate
tanks (KC-5461) or you
can add a wireless
remote controlled
mains power switch
(KC-5462) to control
remote water
pumps. Kit includes
electronic components,
case, screen printed PCB
and pressure sensor.
Telemetry Base Station for
Water Tank Level Meter
KC-5461 £23.25 + postage & packing
This Base Station is used with the telemetry version
of the KC-5460 water tank level meter. It has an
inbuilt 433MHz wireless receiver and can handle
data transmissions from up to 10 level meters and
display the results on a 2-line 32-character LCD
module. Kit includes silk screened PCB, case,
electronic components, receiver module and the RF
transmitter upgrade for one tank
level meter. Remote
electric pump
control option
available.
Requires
9-12VDC 100mA
plugpack.
Be one of the
first to get our
brand new colour
catalogue. It’s bursting
with over 800 new
products, all with
PDS pricing and in
full colour.
Car Kits
Fuel Cut Defeat Kit
KC-5439 £6.00 + post & packing
This cheap and simple kit enables you to eliminate this
factory fuel cut and go beyond the typical 15-17PSI
factory boost limit. The kit simply intercepts the MAP
sensor signal, and trims the signal voltage above 3.9V to
avoid the ECU cutting the fuel supply to the engine.
Kit includes PCB with
overlay & all specified
electronic
components.
LED Water Level Indicator MKII Kit
KC-5449 £10.25 + postage & packing
This simple circuit illuminates a string of LEDs to quickly indicate the water
level in a rainwater tank. The more LEDs that illuminate, the higher the water
level is inside the tank. The input signal is provided by ten sensors located
in the water tank and connected to the indicator unit via-light duty figure-8
cable. Kit supplied with PCB with overlay, machined case with
screen printed lid and all electronic components.
Requires 12-18V AC or DC 500mA plugpack.
Studio 350 - High Power Amplifier
KC-5372 £55.95 + post & packing
Studio Quality, Low Noise, Low Distortion. The Studio 350
power amplifier will deliver a whopping 350WRMS into 4
ohms, or 200WRMS into 8 ohms. It offers some real grunt
without any compromise, using 8 (yes, EIGHT!) 250V
200W plastic power transistors - four MJL21193/4
complementary pairs to be precise. It is super quiet, with
a signal to noise ratio of -125dB(A) at full 8 ohm power.
Harmonic distortion is fantastic - just 0.002%, and
frequency response is almost flat (less than -1dB)
between 15Hz and 60kHz!. We have mentioned the power,
but we forgot to give you the music power figures of
240W* into 8 ohms and 480W* into 4 ohms. Kit supplied
in short form with PCB and electronic components.
Kit requires heatsink and +/- 70V power supply (a
suitable supply is described in the instructions).
• Power figures applicable when described power supply
is used.
Flexitimer/Interval Timer
KC-5464 £8.75 + post & packing
Here's a new and completely updated version of the very
popular low cost 12VDC electronic timer. It is link
programmed for either a single ON, or continuous ON/OFF
cycling for up to 48 on/off time periods. Selectable
periods are from 1 to 80 seconds, minutes, or hours and
it can be restarted at any time. Kit includes PCB and all
specified electronic components.
12-24V High Current Motor
Speed Controller Kit
KC-5465 £29.00 + post & packing
Want to control a really big DC motor? This design will
control 12 or 24VDC motors at up to 40A continuous. The
speed regulation is maintained under load, so the motor
speed is maintained even under heavy load. It also
features automatic soft-start, fast switch-off, a 4-digit
LED 7-segment display to show settings, an overload
warning buzzer and a low battery alarm. All control
tasks are monitored by a microcontroller,
so the functionality is
extensive. Kit contains PCB
and all specified
electronic
components.
How To Order
Post and Packing Charges
Order Value
Cost
£10 - £49.99 £5
£50 - £99.99 £10
£100 - £199.99 £20
£40
•ORDER ON-LINE
•ALL PRICING IN
POUNDS STERLING
•MINIMUM ORDER
ONLY £10
Radar Speed Gun Mk2
KC-5441 £29.00 + post & packing
We have improved and refined this kit since it was
published and it is now even more stable and accurate.
If you're into any kind of racing like cars, bikes boats or
even the horses, this kit is for you. Kit includes PCB and
all electronic components.
Max weight 12lb (5kg). Heavier parcels POA.
Minimum order £10.
Note: Products are despatched from Australia, so local
customs duty and taxes may apply.
How to order:
Call Australian Eastern Standard Time Mon-Fri
Phone: 0800 032 7241
Fax: +61 2 8832 3118
Email:
techstore@jaycarelectronics.co.uk
Post: P.O. Box 107, Rydalmere NSW 2116 Australia
Expect 10-14 days for air parcel delivery
Check out the Jaycar range in your FREE Catalogue - logon to
www.jaycarelectronics.co.uk/elektor
or check out the range at
www.jaycarelectronics.co.uk
0800 032 7241
(Monday - Friday 09.00 to 17.30 GMT + 10 hours only)
For those who want to write:
PO Box 107, Rydalmere NSW 2116 Sydney AUSTRALIA
Order Value Cost
£200 - £499.99 £30
£500+
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S O F T W A R E A N D H A R D W A R E S O L U T I O N S F O R E M B E D D E D W O R L D
DEVELOPMENT TOOLS | COMPILERS | BOOKS
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Scratch-and-win with Elektor!
to China worth £3,000
This year’s edition of Summer Circuits is quite
special. Apart from a vast number of circuits and
ideas we present a scratchcard lottery unique
to electronics magazine publishing. The hidden
number on the scratchcard on the opposite page
may win you a trip to China! Or an oscilloscope,
a development kit, a voucher, Elektor Credits and
lots more.
Elektor editors have phoned their contacts in the
trade and industry to request sponsorship for this
special event. The response was overwhelming.
For example, National Instruments have sponso-
red 8 LabVIEW packages complete with USB data
acquisition modules, representing a total value
of £18,500! Agilent kindly added a fantastic
portable oscilloscope worth £1,300 to our stock
of prizes. Fluke obliged by allowing us to give
away one of their digital multimeters worth £460.
Elektor themselves added a little something to
the stock of prizes: an ElekTrack unit that allows
you to fi nd back your caravan at all times, or
indeed any other vehicle or valuable object. Also
from Elektor are sets of E-credits and a number
of vouchers that allow you
pick your own prize from
the Elektor Shop.
The main prize
Join the scratchcard lottery and win a
unique trip to China. Visit the Great Wall
— discover the culture of this extraordinary
country. Besides, the trip allows a peek into
China’s electronics industry. As part of the
trip you will visit a trade fair, a number of
product manufacturers as well as some of
the largest electronics shops in the world.
After the visit, we’re sure a wondrous world
has opened up for you.
Agilent U1604A handheld oscilloscope
type, worth £1,300 (
1,700)
type, worth £1,300 (
1,700)
type, worth £1,300 (
1,700)
Fluke 87V/E2 multimeter kit,
worth £460 (
600)
8 pcs NI LabVIEW with NI USB-6009 data
acquisition card, worth £2,300 (
3,000) each
Join the lottery and qualify for a 10-day trip
The main prize
Fluke 87V/E2 multimeter kit,
Scratch-and-win with Elektor!
Scratch and enter a draw for prizes worth £40k+ !
Winning was never easier.
Before 31 August 2008, scratch to reveal your
personal code and go to the Elektor website.
On the website, answer the (very) simple
question and then enter your code.
Your personal code:
Just four steps to a fantastic prize!
Now go to:
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
www.elektor.com/scratch
1.
Scratch to reveal your personal code
2.
Go to
www.elektor.com/scratch
Initial conditions for participation
Lottery not open to employees of Elektor International
Media, its business partners and/or associated publishing
houses. No cash equivalent in lieu of prize(s). Legal action
and correspondence barred. Lottery subject to acceptance of
terms. Lottery closes on 31 August 2008.
3.
Answer a simple question
4.
Enter your code and win
Elektor ElekTrack module
worth £300 (
400)
Velleman Personal Pocket Scope
PPS10, worth £170 (
220)
Texas Instruments F28335 eZdsp
Starter Kit, worth £295 (
380)
Join the lottery and qualify for a 10-day trip
www.elektor.com/scratch
worth £300 (
400)
worth £300 (
400)
Plik z chomika:
waclaw.sz
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