Elektor Electronic #373 - January 2008.pdf - 2008 - TirNaNog

www.elektor.com JANUARY 2008 £ 3.90

electronics worldwide

CO 2 detect stufy air

5 %

2 %

0.04 %

before you doze of

test

EnErgy mETErS comPArEd

DC Power Meter

✓

Wireless energy transmission: myth or reality?

Anti-Standby: down with energy wasters!

R04

✓

E-blocks: Toyota Prius does 100 mpg

volTAgE, currEnT & Wh

✓

Electronics Enthusiasts

Great Kits for

•ORDER ON-LINE

•ALL PRICING IN

POUND STERLING

•MINIMUM ORDER

ONLY £10

Top Selling Kits

10A 12VDC Motor Speed Controller

KC-5225 £7.95 + post & packing

Ideal for controlling 12V DC motors in cars such as fuel

injection pumps, water/air intercoolers and water

injection systems. You can also use it for headlight

dimming and for running 12V DC motors in 24V vehicles.

The circuit incorporates a soft start feature to reduce

inrush currents, especially on 12V

incandescent lamps.

Includes PCB and all

electronic

components.

Smart Fuel Mixture Display for

Fuel Injected Cars

KC-5374 £8.95 + post and packing

This kit features auto dimming for night driving,

emergency lean-out alarm, and better circuit protection.

Another great feature is the 'dancing' display which

operates when the ECU is operating in closed loop. Kit

supplied with PCB and all electronic components with

clear English instructions.

* Car must be fitted with air flow and

EGO sensors (standard on

all EFI systems) for

full functionality.

Handy Helpers

Clock Watcher’s Clock

KC-5404 £41.75 + post & packing

KC-5416 £55.25 + post & packing

This amazing clock uses an AVR driven circuit, and

produces a dazzling display with 60 LEDs around the

perimeter. It looks amazing, but can't be properly explained

here. We have filmed it in action so you can see for yourself

on our website www.jaycarelectronics.com. Kit supplied

with double sided

silkscreened plated through

hole PCB and all board

components as well as the

special clock housing!

Available in Red or Blue

Red

45 Second Voice Recorder Module

KC-5454 £11.75+ post & packing

This kit can be set up to record two, four or eight different

messages for random-access playback, or a single

message for ‘tape mode’ playback. It provides clean,

glitch-free line-level audio output suitable for feeding to an

amplifier or PA system. It can be powered from any source

of 9-14V DC. Supplied with silk screened and solder

masked PCB and all

electronic components.

Fujiya 175mm Screw Removing Pliers

TH-2330 £7.00+ post and

packing

Remove screws even with

completely stripped heads. Simply

grab the screw head with these

Japanese made pliers and turn.

Beautiful.

• 175mm long

• Soft grip handle

Waterproof (IP67) LED

Lighting Modules

Each £5.75 + post and packing

Endless possibilities - backlighting signs, strip lighting in

stairwells & passageways, boats, garages etc. Supplied as

10 x 3 LEDs module, 10 modules, with 500mm flying leads

for termination. Each module is spaced at approximately

110mm between centres. Simply connect up a 12VDC

600mA supply and away you go.

Two types available

ZD-0490 White

ZD-0492 Blue

KC-5404

Blue

KC-5416

Audio Playback Adaptor for CD-ROM Drives

KC-5459 £19.00 + post & packing

Put those old CD-ROM drives to good use as CD players using

this nifty adaptor kit. The adaptor accepts signals from common

TV remote controls and operates the audio functions of the drive

as easily as you would control a normal CD player. Kit features a

double sided PCB, pre-programmed micro controller, and IDC

connectors for the display panel. Supplied with solder masked

and screen printed PCB and all required electronic components.

Low Voltage Battery Warning

KG-9000 £3.00 + post and packing

This circuit monitors any battery

voltage between 3-15 volts.

Whenever the voltage falls

below a predetermined

value a Red LED lamp

lights up to alert you.

Uses a tiny amount of

power from the battery

being monitored. Use it for

monitoring all sorts of battery

systems and avoiding battery damage.

Build-Yourself

Electronic Project Kits

Looking for a particular KIT?

Checkout Jaycar’s extensive range.

We have kits and electronic projects for use in:

• Audio & Video

• Car & Automotive

• Computer

• Learning & Educational

• Lighting

• Power

• Test & Meters

• General Electronics Projects

- just for fun!

Post and Packing Charges

Order Value Cost

£10 - £49.99 £5

£50 - £99.99 £10

£100 - £199.99 £20

Order Value Cost

£200 - £499.99 £30

£500+

£40

430+ pages

ALL prices in PDS

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:

Phone: Call Australian Eastern Standard Time Mon-Fri

on 0800 032 7241

Email: techstore@jaycarelectronics.co.uk

Post: PO BOX 6424, Silverwater NSW 1811. Australia

Expect 10-14 days for air parcel delivery

Light-Sensitive Switch 240VAC 10A

AA-0326 £3.00 + post and packing

Turn a mains powered device on or off

according to the ambient light level. Ideal

for garden lighting or security

applications. The controller is weather

resistant and includes a

mounting bracket. Approx

80mm high.

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: 100 Silverwater Rd

Silverwater NSW 2128 Sydney AUSTRALIA

PC Oscilloscopes & Analyzers

DSO Test Instrument Software for BitScope Mixed Signal Oscilloscopes

4 Channel BitScope

2 Channel BitScope

Pocket Analyzer

Digital Storage Oscilloscope

Up to 4 analog channels using industry standard

probes or POD connected analog inputs.

BitScope DSO Software for Windows and Linux

�

BitScope DSO is fast and intuitive multi-channel test and measurement software for your

PC or notebook. Whether it's a digital scope, spectrum analyzer, mixed signal scope,

logic analyzer, waveform generator or data recorder, BitScope DSO supports them all.

Capture deep buffer one-shots or display waveforms live just like an analog scope.

Comprehensive test instrument integration means you can view the same data in

different ways simultaneously at the click of a button.

DSO may even be used stand-alone to share data with colleagues, students or

customers. Waveforms may be exported as portable image files or live captures replayed

on other PCs as if a BitScope was locally connected.

BitScope DSO supports all current BitScope models, auto-configures when it connects

and can manage multiple BitScopes concurrently. No manual setup is normally required.

Data export is available for use with third party software tools and BitScope's networked

data acquisition capabilities are fully supported.

Mixed Signal Oscilloscope

Capture and display up to 4 analog and 8 logic

channels with sophisticated cross-triggers.

Spectrum Analyzer

Integrated real-time spectrum analyzer for each

analog channel with concurrent waveform display.

Logic Analyzer

8 logic, External Trigger and special purpose

inputs to capture digital signals down to 25nS.

� Networking

Flexible network connectivity supporting

multi-scope operation, remote monitoring and

data acquisition.

� Data Export

Export data with DSO using portable CSV files or

use libraries to build custom BitScope solutions.

�

www.bitscope.com

1/2008 - elektor

�

Data Recorder

Record anything DSO can capture. Supports

live data replay and display export.

CO 2 008

As the editorial staff approach the

print deadline for this, yet another

ine issue of Elektor magazine, the

glass wall of my ofice gets decora-

ted with proof pages of the articles

they want to ‘run’. There’s a CO 2

meter, a test of electrical energy

meters, an article about energy

transmission and a fair number of

projects. The C0 2 meter was discus-

sed at length — what to do with an

instrument like that and just what ap-

pears on the readout? C0 2 is ‘hot’ in

more than one sense — everyone’s

talking about it, but what about the

concentration of those one-carbon-

two-oxygen molecules in the environ-

ment we live and work in? Clearly,

when approaching the 8-10% CO 2

level in a room, an acute need is felt

to open a window (or two), or take

more drastic measures to clean the

air. As far as I am concerned this

meter deserves a place right beside

the thermometer and hygrometer.

CO 2 Measurement

Too high a con-

centration of CO 2

leads to feelings of

tiredness, disturbs

concentration, and

causes headaches. The

CO 2 meter described

here makes it easy to de-

termine the concentration

of carbon dioxide in the air.

A microcontroller monitors

the measured value and can

trigger an alarm or start up a

ventilation system when a preset threshold is exceeded

This issue of Elektor is all about

energy consumption and practical

ways to reduce it. But there’s more.

As I write this, Greenpeace clamours

for attention for the E-waste problem.

Because consumers want to have

all the latest in mobiles, PCs and

e-gizmos all the time, the amount

of electronics waste goes sky high

(literally), especially in China.

Should Elektor readers feel a special

responsibility for that? After all, they,

like no other, are not only aware of

the real amount of energy consumed

by all that modern electronic kit seen

in the home and ofice, but they also

know of clever ways to save energy

and reuse it. Knowledge creates

responsibilities, they say, and I

would sure like to hear from you on

that — just use the Feedback form

accessible on our websites (look for

the ‘Service’ tab).

50 Economical with Energy

Handy energy meters are available that can just be plugged into a power

point and then indicate on a display how much power the appliance uses.

How accurate are these meters and what can you actually measure with

them? We examined a few of these meters in the Elektor laboratory.

Talking of websites, I am glad to

announce the recent launch of the

www.elektor.es website. This new,

fully Elektor-compatible channel

now provides news, products and

services to our Spanish readers all

over the world — most certainly

worth a visit.

With the best wishes from the com-

plete Elektor team and hoping for a

clean and interesting year to come,

Wisse Hettinga

International Editor in Chief

CONTENTS

Volume 34

January 2008

no. 373

✗

projects

16 CO 2 Measurement

24 Anti-Standby Switch

30 Versatile DC Power Meter

36 Ballast for

Energy-saving Lamps

58 E-blocks: more than 100

mpg from a Toyota Prius

70 Levitating Cube

74 Design Tips:

Battery Booster

Data Transceiver for LNB Cable

Energy Saving may well

be a must-have feature

for home entertainment

products sold today but

there are still millions of

older and even not-so-

old appliances that are guzzling far too much juice in the all too conve-

nient standby mode. The anti-standby switch described here saves the

planet’s energy—and yours too!

technology

40 Low Power eficiency

measurements

44 Wireless

Power Transmission

62 Energy Saving

through Motor Control

info & market

30 Versatile DC Power Meter

6 Colophon

8 Mailbox

10 News & New Products

50 Economical with Energy

66 Cyclone III FPGA starter kit

(review)

80 Elektor SHOP

84 Sneak Preview

infotainment

This compact DC power supply instrument module can be used with new

supplies and older types lacking this capability. And thanks to microcon-

troller technology, it offers some bonus features.

69 Vista in the lab

76 Hexadoku

77 Retronics:

Filmnet Decoder (1989)

24 Anti-Standby Switch

Elektor Electronic #373 - January 2008.pdf

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: