EPE_2010-04.pdf

PIC-BASED WATER TANK

LEVEL METER

i Basic/Telemetry versions

i Powered by a single cell

i Water level displayed using a

10-colour LED indicator

i Easy intallation using a length

of plastic tubing into tank

i Automatic pump control facility

USB POWER INJECTOR FOR

EXTERNAL HARD DRIVES

Power up your drives if your PC ports

can’t supply enough ‘juice’!

AN ALTERNATIVE 12V 10A

POWER SUPPLY

It can even keep going if

there is a mains failure

TEACH-IN 2010

Ladder Logic Programming For the PIC Micro

Part 6 – Customising and Extending the Software

$8.75US $10.25CAN £3.95UK

APRIL 2010 PRINTED IN THE UK

(Sequoia House, 398a Ringwood Road, Ferndown, Dorset BH22 9AU, UK)

and TechBites Interactive Inc.,

(PO Box 857, Madison, Alabama 35758, USA)

WARNING!

The materials and works contained within EPE Online — which are made available

by Wimborne Publishing Ltd and TechBites Interactive Inc — are copyrighted. You

are permitted to make a backup copy of the downloaded file and one (1) hard

copy of such materials and works for your personal use.

International copyright laws, however, prohibit any further copying or

reproduction of such materials and works, or any republication of any kind.

TechBites Interactive Inc and Wimborne Publishing Ltd have used their best

efforts in preparing these materials and works. However, TechBites Interactive Inc

and Wimborne Publishing Ltd make no warranties of any kind, expressed or

implied, with regard to the documentation or data contained herein, and

specifically disclaim, without limitation, any implied warranties of merchantability

and fitness for a particular purpose. Because of possible variances in the quality

and condition of materials and workmanship used by readers, EPE Onlin e, its

publishers and agents disclaim any responsibility for the safe and proper

functioning of reader‐constructed projects based on or from information

published in these materials and works. In no event shall TechBites Interactive Inc

or Wimborne Publishing Ltd be responsible or liable for any loss of profit or any

other commercial damages, including but not limited to special, incidental,

consequential, or any other damages in connection with or arising out of

furnishing, performance, or use of these materials and works.

NewYearVATBusters

ATLASDCA -MODELDCA55

ThefamousPeak Atlas,nowwith

fittedpremiumprobes.Justconnectanyway

roundtoidentifythetypeof

semiconductor,pinoutand

lotsofparameterstoo.

Completewithbattery,

userguideandprobes.

“

foralimitedtimeonly...

...we’rekeepingourpricesatpre-VAT-increaselevels

electronicdesignltd

THENEW ATLASESRPLUS,MODELESR70

Darlingtons

MOSFETs

Diodes

Transistors

LEDs

andmore...

Thisnewmodelofthefamous offers

allthegreatfeaturesoftheESR60butwith

extendedmeasurementrangeandaudiblealerts.

ATLASESR

LOOK!NEWPROBES.

Thisisthe

ATLASESRPLUS

ATLASSTARPACK(LCR/DCA)

Capacitancefrom1uFto22,000uF.

ESRfrom0.01ohmsto40ohms.

GreatforESRandlowresistance

measurements(shorttracingetc).

Automaticcontrolleddischargefunction.

Audible Alerts(forgoodESR,poorESR,

opencircuitandmore).

Goldplatedcrocclips.

UserGuideandBatteryincluded.

ExtraVATBustingSaver!!

Thispacksavesyou£25

NEWMODEL

Includesthe AtlasLCRPassiveComponent

Analyser(modelLCR40), AtlasDCA

Semiconductor Analyser(modelDCA55),

premiumpaddedcarrycaseanduserguides.

ATLASSCR-MODELSCR100

ATLASLCR-MODELLCR40

ATLASESR-MODELESR60

Completewithextrasparebattery.

You’rereadytogo!

Connect Triacsor Thyristorsanywayround.

Autopartidentificationandpinoutdisplay.

Categorisesgatefrom100uA to100mA.

Loadconditionsregulatedat12V,100mA,

evenforadyingbattery.

Measuresgatevoltagedrop.

Longlifealkalinebatterysupplied.

Suppliedwithpremiumprobes.

Passivecomponentanalyser.

Automaticallyidentifyandmeasure

inductors,capacitorsandresistors.

Autofrequencyselection.

Removableprobes.

SpecialOffer!

MeasurecapacitanceandESR!

Capacitancefrom1uFto22,000uF

ESRfrom0.01ohmsto20ohms

Batteryincluded+Goldplatedcrocclips

1uH-10H

1pF-10,000uF

1Ohms-2M

ReducedPrice!

£79incVAT

was£97

£79incVAT

was£87

PeakElectronicDesignLtd,WestRoadHouse,WestRoad,

Buxton,Derbyshire,SK176HF.

tel.0129870012www.peakelec.co.uksales@peakelec.co.uk

Pleaseadd£2.75p&pperorder.PricesincludeUKVAT.

Seewebsiteforoverseasprices.

SpecialOfferpricesforlimitedperiodorwhilestockslast.

www.stewart-of-reading.co.uk

CHECK OUT OUR WEBSITE, 1,000’s of items currently in stock

3GHZ with Option 1DN

Tracking Gen; 1 DR Narrow Res;

A4H GPIB, UKB

–

HP8568A Spectrum Analyser

100HZ-1500MHZ

£1250

2.51GHZ

Opt 04 High Stab Opt 11

High Power etc As New

—

£5800

AVCOM PSA-37D Spectrum

Analyser 1MHZ-4.2GHZ

£-

£2500

HP 8591E Spectrum Analyser

9KHZ – 1.8GHZ with Tracking Gen £1500

No Moudlings, No Handle

IFR 1200S Service Communication

Monitor

£2000

SOLARTRON 1250 Frequency

Response Analyser 10uHZ-20MHZ

£-

HP53131A UNIVERSAL COUNTER

WITH OPT 001 (oven)

Unused Boxed 3GHZ

£1250

HP6624A Power Supply 0-20V

0-2A Twice, 0-7V 0-5A; 0-50V

0.8A Special price

HP3324A Synthesised Function

Generator 21MHZ

HP 35670A FFT Dynamic Signal

Analyser 2 Channel. Unused in

original box

£500

£850

£350

TEKTRONIX AM503B with

A6302 Probe and TM502A £750

HP41800A Active Probe 5HZ-500MHZ £750

£2500

AVO/MEGGAR FT6/12 AC/DC

breakdown tester

Unused Boxed 225MHZ

£595

AGLIENT 83752B Synthesised

Sweeper0.01-20GHZ

£-

Used 225MHZ

£495

£7000

HP83731B Synthesised 1-20GHZ

with Opts IEI Attenuator, IE5 High

Performance Mod Gen, IE5 High

Stab TB

EXTRA SPECIAL OFFER

£4500

HP83711B Synthesised 1-20GHZ

with Opt IEI Attenuator

£5000

HP33120A FUNCTION GENERATOR

100 MicroHZ – 15MHZ

Unused Boxed

£595

AGILENT/HP E4431B Signal

Generator 250KHZ-2GHZ Digital

Modulation

£2750

MARCONI 2024 Signal Generator

9KHZ-2.4GHZ Opt 04/11 HPIB

£1250

MARCONI/IFR 2030 Signal

Generator 10KHZ-1.35 GHZ

£995

MARCONI 2032 Signal Generator

10KHZ-5.4GHZ

£-

ANRITSU MS2601A SPECTRUM

ANALYSER

10KHZ – 2.2 GHZ 50ohm

£750

MARCONI 2022E Synthesised

AM/FM Signal Generator

10KHZ-1.01GHZ Special price £325

HP3580A Spectrum Analyser 5HZ-50KHZ

Unused £500

HP8566A Spectrum Analyser 100HZ-22GHZ

£1950

STEWART of READING

17A King Street, Mortimer,

Near Reading RG7 3RS

T: (0118) 933 1111 • F: (0118) 933 2375

9am – 5pm Monday - Friday

Used Equipment – GUARANTEED

Most Manuals Supplied

Prices plus carriage and VAT

Please check availability before ordering

or CALLING IN .

MARCONI 2945 RADIO COMMUNICATIONS TEST SET with….

Opt 01 – 600 ohm Matching Unit - Opt 03 – High Stability OCXO -

Opt 06 – Memory Card Drive with Real Time Clock - Opt 08 – SSB Demodulator -

Opt 21 Demodulation Filters - Opt 22 POCSAG Decode

Complete with Carrying Bag Only £2,500

AGILENT E4402B Spectrum Analyser

100HZ

MARCONI/IFR/AEROFLEX 2025

Signal Gen 9KHZ

ISSN 0262 3617

ProjeCtS theory

newS CoMMent

PoPulAr feAtureS

INCORPORATING ELECTRONICS TODAY INTERNATION AL

vol. 39. no 4 April 2010

www.epemag.com

Projects and Circuits

An AlternAtive 12v 10A Power SuPPly by Ken Ginn

A battery-backed mains supply that can top up under high load conditions

PiC-BASed wAter tAnk level Meter – PArt 1 by John Clarke 20

Easy-to-install instrumentation with optional remote monitoring by radio

uSB Power injeCtor for externAl hArd driveS by Greg Swain 32

Use when your USB ports don’t have enough ‘juice’!

lM3909 rePlACeMent Module by Thomas Scarborough

This circuit’s even more versatile than the original chip

inGenuity unliMited

Current-stealing Audio Signal Injector – Faultfinding made easy

Series and features

teChno tAlk by Mark Nelson

Unreported News

reCyCle it! by Julian Edgar

The multi-purpose tape answering machine

teACh-in 2010 lAdder loGiC ProGrAMMinG for

the PiC MiCro by Walter Ditch

Part 6: Customising and Extending the Software

CirCuit SurGery by Ian Bell

Driving LEDs and a Take Note Message

PiC n’ Mix by Mike Hibbett

Introducing The Propeller Processor

BeSt vAlue ever 18-Pin PiC S by Peter Brunning

A new range of 18-pin 16F PICs

interfACe by Robert Penfold

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: