August 2002
Projects and Circuits
PICKPOCKET ALARM by Bart Trepak
Keep bags safe from the artful dodger!
PIC WORLD CLOCK by John Becker
Graphically displays world map, calendar, clock and global time-zone data
BIG-EARS BUGGY by Thomas Scarborough
Sound-activated mobile “pet” buggy that follows your voice
SIMPLE AUDIO CIRCUITS – Part 4 - Loudspeaker Enclosures, Tuning Oscillator and Resonance Detector by Raymond Haigh
A compendium of useful audio circuits for the experimenting constructor
INGENUITY UNLIMITED hosted by Alan Winstanley
RF Data Spike Avoider
Series and features
NEW TECHNOLOGY UPDATE by Ian Poole
Strained silicon technology promises to enhance semiconductor performance
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Mini Siren; Transformer Sizes; Dynamo Torch LED; Brighter LEDs
EVOLUTIONARY ELECTRONICS by Chris MacLeod and Grant Maxwell
A revolution in evolution, and anyone can experiment with it
USING SQUARE ROOTS WITH PICS by Peter Hemsley
Explaining how a neat software routine calculates an essential maths function
INTERFACE by Robert Penfold
Using MSCOMM to receive serial data
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
More on Viruses
TEACH-IN 2002 - Part 10 - by Ian Bell and Dave Chesmore
Concluding this series with a look at Advanced Sensors and Radio Telemetry Systems
July 2002
Projects and Circuits
INFRA-RED AUTOSWITCH by Max Horsey
Keeps work-surface lights turned on only while you are near to them
INGENUITY UNLIMITED hosted by Alan Winstanley
Velocity Detector; Car Battery Trickle Charger
EPE STYLOPIC by John Becker
Have fun with a modern interpretation of a classic musical instrument!
SIMPLE AUDIO CIRCUITS - Part 3
Power Supplies, Loudspeakers, Crossover Networks and Filters by Raymond Haigh
A compendium of useful audio amplifier circuits for the experimenting constructor
ROTARY COMBINATION LOCK by Thomas Scarborough
Pure logic and a “stack of cards” function enhance security
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Holographic techniques could revolutionize computer data storage
USING THE PIC’S PCLATH COMMAND by John Waller
How to access PIC addresses beyond 2K and place tables outside the basic 256 byte block
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Bandgap Voltages; More on X and Y capacitors; Yaesu Battery Charger again
PRACTICALLY SPEAKING by Robert Penfold
A practical look at interpreting component codings
NET WORK – THE INTERNET PAGE surfed by Alan Winstanley
Search Engines; Tiscali 10.0
TEACH-IN 2002 - Part 9 - Filters, Analogue-to-Digital Conversion,
Sampling, and Nuclear Radiation Sensing by Ian Bell and Dave Chesmore
June 2002
Projects and Circuits
BIOPIC HEARTBEAT MONITOR by John Becker
Take a peek at the rhythmic waveforms that keep you ticking!
INGENUITY UNLIMITED hosted by Alan Winstanley
L.E.D. Sequencer; Quiz Master
WORLD LAMP by Thomas Scarborough and Surya Rao Maturu
Low cost lighting when there’s no mains supply available
SIMPLE AUDIO CIRCUITS - Part 2. Preamplifiers, Tone Controls and Filters by Raymond Haigh
A compendium of useful audio amplifier circuits for the experimenting constructor
FREQUENCY STANDARD GENERATOR by Andy Flind
High precision 1Hz to 100kHz frequency source, derived "off-air"
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Glass and silver high speed non-volatile memories
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Darlington Transistors; Scope Grounding; Fleming’s Rules; X/Y Capacitors
INTERFACE by Robert Penfold
Accessing Serial Ports via MSCOMM Control
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Broadband services
TEACH-IN 2002 - Part 8 - Filters, Actuators, Smoke and Gas Detection,
with experiments by Ian Bell and Dave Chesmore
May 2002
Projects and Circuits
FREEZER ALARM by Humphrey Berridge
How to prevent your food from defrosting unexpectedly
PIC BIG-DIGIT DISPLAY by John Becker
Control the giant ex-British Rail platform clock 7-segment digits that are now available on the surplus market
INGENUITY UNLIMITED hosted by Alan Winstanley
Battery Discharger; Emergency Light
SIMPLE AUDIO CIRCUITS - 1. Power Amplifiers by Raymond Haigh
A compendium of useful audio amplifier circuits for the experimenting constructor
WASHING READY INDICATOR by Terry de Vaux-Balbirnie
Has the washing machine finished? - Avoid those washday blues
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Dye molecules improve solar cell efficiency
PRACTICALLY SPEAKING by Robert Penfold
A general look at using enclosures with your projects
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Stripboard designing software
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Linear opto-coupling; Dog and Cat Scarer circuit details
TEACH-IN 2002 - Part 7. by Ian Bell and Dave Chesmore
Comparators and digital optical sensing, plus more on Noise (with experiments)
April 2002
Projects and Circuits
ELECTRIC GUITAR TUNER by Robert Penfold
Six fixed frequencies and an l.e.d. help you to stay in tune
INGENUITY UNLIMITED hosted by Alan Winstanley
Switch Mode Regulators; Lottery Predictor
PIC CONTROLLED INTRUDER ALARM by John Becker
A sophisticated multi-zone intruder detection system that offers deluxe monitoring facilities
MANUAL STEPPER MOTOR CONTROLLER by Thomas Scarborough
Illustrates how a 4-phase stepper motor can be controlled bi-directionally using a conventional rotary switch
SOLAR CHARGE AND GO by Terry de Vaux-Balbirnie
Use solar power to charge your 2·4V or 3·4V NiCad and nickel metal hydride mobile phone batteries
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
FinFET devices feature ultra-thin silicon fins that further-reduce chip sizes
TEACH-IN 2002 - Part 6
Magnetic Sensors, Interference and Noise, with experiments by Ian Bell and Dave Chesmore
INTERFACE by Robert Penfold
PC Serial Port Interfacing
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Java applets speed EPEonline ordering; JBMail helps reduce spam
ELECTRONIC PRINCIPLES V7.1 REVIEW by Robert Penfold
The range of V7.1 is vast, offering tutorials on various aspects of computing, electronics, maths, physics, etc., with interactive screens
PROGRAMMING PIC INTERRUPTS - Part 2 by Malcolm Wiles
How to use interrupts successfully with your PIC programs
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
More on grounded and floating supply lines; Charging Yaesu transceiver batteries; Eco Warrior battery charging
March 2002
Projects and Circuits
MK484 SHORTWAVE RADIO by Tom Merryfield
The MK484 is a replacement for the once-popular ZN414 radio receiver IC.
INGENUITY UNLIMITED hosted by Alan Winstanley
Lightning Detector; Dog and Cat Scarer; Pico Prizewinners
RH METER by Bill Mooney
How healthy is the moisture content in your home? By monitoring its relative Humidity you can then take steps to control it.
PIC VIRUS ZAPPER by Andy Flind
Can disease be cured electronically? Investigate this controversial subject for yourself!
PIC MINI-ENIGMA by Nick Dossis
Share encrypted messages with your friends -- true spymaster entertainment!
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Superconducting transistors evolved from astronomical research.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Choosing the right battery; Four-layer devices
PROGRAMMING PIC INTERRUPTS - Part 1 - by Malcolm Wiles
How to use interrupts successfully with your PIC programs.
TEACH-IN 2002 - Part 5 - Taking the pressure - more on strain, plus accelerometers and pressure sensors with experiments - by Ian Bell and Dave Chesmore
Continuing our tutorial and practical series - making sense of the real world.
PRACTICALLY SPEAKING by Robert Penfold
A general look at cable and wiring requirements and types.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
DVD Resources; Stripboard Designer
February 2002
Projects and Circuits
GUITAR PRACTICE AMP by Bart Trepak
Enjoy playing in private without annoying the neighbors
HT POWER SUPPLY by Robert Penfold
Provides up to 120V d.c. to power your favorite antique value radio
PIC SPECTRUM ANALYZER by John Becker
PIC-controlled PC interface for analyzing analogue waveforms and displaying their harmonic content.
VERSATILE CURRENT MONITOR by Terry de Vaux-Balbirnie
Monitors equipment current flow and warns if it significantly changes
INGENUITY UNLIMITED by Alan Winstanely
Smart Alarm Timer; L.E.D. Dynamo Torch; Walkman in a Car
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Electrolytic capacitors using new polymers and a muiti-foiled structure achieve lower ESR
INTERFACE by Robert Penfold
Producing a DIY MIDI Adapter for your PC
RUSSIAN SPACE SHUTTLE REVISITED by Barry Fox
Buran was a mothballed since 1988 but may soon fly again
CIRCUIT SURGERY by Alan Winstanely and Ian Bell
Unconfusing fuses; Electrolytics Unravelled
TEACH IN 2002 - Part 4 - Good vibrations - Measuring Stress, Strain, and Vibration, with experiments by Ian Bell and Dave Chesmore
Continuing our tutorial and practical series - making sense of the real world electronics to measure the enviroment
January 2002
Projects and Circuits
PIC MAGICK MUSICK by John Becker
A spellbinding experience at the slightest wave of your hand
INGENUITY UNLIMITED by Alan Winstanley
Precision UV Timer ; Transistor/Diode Go/No-Go Checker
TIME DELAY TOUCH SWITCH by Bart Trepak
A self-contained mains switch that will automatically turn off its lights ranges of 100Ma to 1A
FOREVER FLASHER by James Scarborough
An easy build project that will flash a LED for 20 years or more.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
A bumpless drive to squeeze one billion transistors into a single i.c. package
PRACTICALLY SPEAKING by Robert Penfold
Component identification symbols and circuits translation
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Taking a mathematical approach to solve a filter problem
CD-ROM REVIEW by Terry de Vaux Balbirine
Test driving the electronics circuits and components V2.0 disk
TEACH IN 2002 - Part 3 - More on op.amps in sensors plus humidity sensors By Ian Bell and Dave Chesmore
NET WORK -The internet page by Alan Winstanley
Annual reflection on the state of British internet market
December 2001
Projects and Circuits
TWINKLING LIGHTS by Terry de Vaux-Balbirnie
A beautiful 4-channel lighting effect for your Christmas tree or party
MAINS FAILURE ALARM by Bart Trepak
Monitor your mains connections and project your freezer or fish tank
GHOST BUSTER by Andy Flind
Spooky feeling all around you? Track down their source!
PIC POLYWHATSIT by John Becker
A novel compendium of delay-based musical effects
INGENUITY UNLIMITED hosted by Alan Winstanley
Squash Switch; Fine Turning Aid for AM Receivers
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
A brief history of l.e.d.s, and how they could replace incandescent lamps
TEACH-IN 2002 - Part 2 - More on Temperature Sensors and Opamps plus a discussion on opto-sensors By Ian Bell and Dave Chesmore
Continuing our tutorial and practical series making sense of the real world: electronics to measure the environment
MARCONI - THE FATHER OF RADIO By Ian Poole
G3YWX Commemorating the centenary of the first transatlantic radio transmission
INTERFACE BY Robert Penfold
Simple Analogue to digital converter using a 12 bit chip
NET WORK - THE INTERNET PAGE BY Alan Winstanley
CIRCUIT SURGERY BY Alan Winstanley and Ian Bell
Transconductance Amplifiers; Heatsinks Revisited
November 2001
Projects and Circuits
CAPACITANCE METER by David Ponting
Allows any capacitor type to have it's true value readily measured
TEACH-IN 2002 POWER SUPPLY by Alan Winstanley
Supplies +/-12V and +5V at 600mA
LIGHTS NEEDED ALERT by Terry de Vaux-Balbirnie
Ensure your car can be seen when driven in poor lighting conditions
INGENUITY UNLIMITED by Alan Winstanley
Automatic Day Indicator; Christmas Star; Emergency Light Unit
PITCH SWITCH by Thomas Scarborough
A novel sound-operated switch with precise frequency response
Series and Features
TEACH-IN 2002 - Part 1 - SENSORS, THE ENVIRONMENT, UNITS AND EQUATIONS, TEMPERATURE by Ian Bell and Dave Chesmore
The first feature in a 10-part tutorial and practical series - making sense of the real world: electronics to measure the environment
NEW TECHNOLOGY UPDATE by Ian Poole
New fuel cells and biological switchs
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Wiring transistors in parallel
NETWORK - THE INTERNET PAGE surfed by Alan Winstanley
Take control of your email and help beat junk and viruses
PRACTICALLY SPEAKING by Robert Penfold
A general look at transistors and their heat-sinking requirements
October 2001
Projects and Circuits
CAMCORDER POWER SUPPLY by Terry de Vaux-Balbirnie
Battery replacement with a lot more bottle!
PIC TOOLKIT Mk3 by John Becker
An enhanced PIC microcontoller programming development board, and prelude to next month's exciting new Windows-based TK3 software!
2-VALVE SW RECEIVER by Robert Penfold
A nostalgic and simple design for valve radio enthusiasts
INGENUITY UNLIMITED by Alan Winstanley
Three-way lighting
PERPETUAL PROJECTS - Part 4 - by Thomas Scarborough
Three more solar-powered projects to complete the series - Gate Sentinel, Bird Scarer, In-Out Register
Series and Features
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Heatsink calculations
NEW TECHNOLOGY UPDATE by Ian Poole
Thermocouple-based accelerometers dispense with moving parts
TRAFFIC CONTROL by Owen Bishop
SCOOT systems speed the flow of road traffic and pedestrians
NET WORK ---THE INTERNET PAGE surfed by Alan Winstanley
Sircam and other worms and viruses
INTERFACE by Robert Penfold
Single-chip 32-bit output port
September 2001
Projects and Circuits
WATER MONITOR by John Becker
How costly is it to keep your garden watered? Find out and control it.
INGENUITY UNLIMITED hosted by Alan Winstanley
Wien Bridge Audio Generator; Precision Stereo Volume Control
LED SUPER TORCHES by Andy Flind
Two high-tech (one super-high-tech) designs to brighten your nights.
PERPETUAL PROJECTS - Part 3 by Thomas Scarborough
Three more solar-powered projects - Loop Burglar Alarm, Touch-Switch Door-Light, Solar-Powered Rain Alarm - plus seven suggestions for variants.
SYNCHRONOUS CLOCK DRIVER by Andy Flind
By popular request - a dual-frequency 50Hz/60Hz converter for mains-operated synchronous clocks.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Small is efficient when it comes to packaging.
CONTROLLING FLIGHT by Owen Bishop
An insight into how electronics helps to maintain aircraft safety.
PRACTICALLY SPEAKING by Robert Penfold
A novice's guide to why some pins can be left unconnected.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Curious Decoupling; Some Like it Hot
August 2001
Projects and Circuits
DIGITIMER by by Steve Challis
Enhance your ease of viewing - build an add-on VCR record timer unit for Sky TV
LEAD-ACID BATTERY CHARGER by Terry de Vaux-Balbimie
Keep your 6V and 12V batteries in a properly charged condition.
PERPETUAL PROJECTS - PART 2 - LED FLASHER and DOUBLE DOORBUZZER by Thomas Scarborough
Two more perpetual projects for which you can be "eternally" grateful!
INGENUITY UNLIMITED hosted by Alan Winstanley
PC Sound System; Reliable Touch-Sensitive Switch; Pico Prize Winners
COMPACT SHORTWAVE LOOP AERIAL by Raymond Haigh
This Q-multiplied loop amplifies signals and nulls out electrical interference. Four plug-in loops covering 1.5MHz to 30MHz.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Are nano-pipes the future for transistor technology?
INTERFACE by Robert Penfold
Logic IC monitoring via a PC
CONTROLLING POWER GENERATION by Owen Bishop
PID control systems help maintain supplies of electrical power
NEW WORK - THE INTERNET PAGE surfed by Alan Winstanley
Software Overload; SuperCat; SuperSearch
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
New Case Alarm
July 2001
Projects and Circuits
STEREO/SURROUND SOUND AMPLIFIER by Max Horsey and Tom Webb
An easy-to-build design whose effect, considering its inexpensive cost, is convincing!
INGENUITY UNLIMITED hosted by Alan Winstanley
Zener Diode Tester; Cupboard Door Monitor
PIC TO PRINTER INTERFACE by John Becker
How to use dot-matrix printers as data loggers with PIC microcontrollers.
PERPETUAL PROJECTS - PART 1 - SOLAR-POWERED POWER SUPPLY AND VOLTAGE REGULATOR by Thomas Scarborough
Free power for your projects! The first in a new series.
MSF SIGNAL REPEATER AND INDICATOR by Andy Flind
How to receive MSF radio clock signals in a shielded building.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Non-volatile memory based on CD-ROM technology
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Keep it in the logic family; Capacitors, Resisters, and Voltages; More on Multipliers
THE WORLD OF PLCs by Owen Bishop
Programmable logic controllers offer many advantages in industrial manufacturing.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Googlifying New Groups; Sponsored search adverts.
June 2001
Projects and Circuits
MAGFIELD MONITOR by Andy Flind
A sophisticated fluxgate sensor monitors static and alternating magnetic fields and outputs processed signals to a meter and headphones.
DUMMY PIR DETECTOR by Bart Trepak
An extremely inexpensive way to fool would-be intruders.
HOSEPIPE CONTROLLER by Terry de Vaux-Balbirnie
How to avoid wasting money when watering your garden.
INGENUITY UNLIMITED hosted by Alan Winstanley
Transistor Tester; DMM Auto Power Off; Broken Field Detector
IN-CIRCUIT OHMMETER
Our final Top-Tenner ("Beginners") project enables you to measure in-circuit resistance.
Series and Features
CONTROLLING JODRELL BANK by Owen Bishop
An insight into how electronics plays a vital role in our investigations of the Universe.
NEW TECHNOLOGY UPDATE by Ian Poole
Silicon-germanium semiconductors promise higher speed and more compact architectures.
NET WORK - THE INTERNET PAGE - surfed by Alan Winstanley
Search and you shall find (usually) - how search engines work.
PIC16F87x EXTENDED MEMORY by John Becker
How to use the additional memory banks of the PIC16F87x devices.
PRACTICALLY SPEAKING by Robert Penfold
A novice's guide to trouble-shooting project assembly.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
More on Impedance Matching; Silenium Rectifiers
May 2001
Projects and Circuits
PIC GRAPHICS LCD SCOPE by John Becker
Long awaited, a PIC and Graphics LCD signal monitor for your workshop.
CAMCORDER MIXER by Terry de Vaux-Balbirnie
Enhance the sound of your home video productions.
DC MOTOR CONTROLLER by Owen Bishop
Simply and inexpensively control low-voltage motors or lamps with this month's Top Tenner (beginners) project.
INTRUDER ALARM CONTROL PANEL - PART 2 - by John Griffiths
Concluding the 5-zone microcontrolled security system designed to meet British Standards specification BS4737.
INGENUITY UNLIMITED hosted by Alan Winstanley
Body Charge Detector; Flashing Christmas Tree; Solid State Switch; Electronic Tuning Fork.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Audio Quality is being further improved by digital amplification.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Impedance Matching; Phase Locked Loops Revisited; PCB Solvents.
INTERFACE by Robert Penfold
Going active with Visual BASIC 5 Control Creation edition.
NET WORK - THE INTERNET PAGE Surfed by Alan Winstanley
Defend yourself against "cookie spyware".
THE SCHMITT TRIGGER - Part 7 - Hysteresis in specialized devices by Anthony H. Smith
Concluding our guide to investigating and using Schmitt triggers.
April 2001
Projects and Circuits
WAVE SOUND EFFECT by Robert Penfold
Let the susurration of the waves soothe intrusions on your senses.
INTRUDER ALARM CONTROL PANEL by John Griffiths
5-zone micro-controlled security system designed to meet British Standards specification BS4737
SOUND TRIGGER by Owen Bishop
How to use a sound trigger/switch to control a low-voltage light.
EPE SNUG-BUG by Mike Delaney
Treat your tropical pets to a personalized 4-channel heating system.
INGENUITY UNLIMITED hosted by Alan Winstanley
12V Sealed Lead/Acid Charger; Audio Preamplifier; Model Police Car LEDs
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
3D liquid crystal displays become reality.
PRACTICALLY SPEAKING by Robert Penfold
A novice's guide to trouble-shooting project assembly
CIRCUIT SURGERY by Alan Winstanley and Ian Poole
More on phase-locked loops.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
EPE Online Shop
THE SCHMITT TRIGGER - Part 6 - Further Digital Applications by Anthony H. Smith
A designer's guide to investigating and using Schmitt Triggers
March 2001
Projects and Circuits
DOORBELL EXTENDER by David Ponting
Through-the-mains controller links your doorbell and garage or workshop, plus remote appliance switching.
BODY DETECTOR by Thomas Scarborough
Create your own "invisible shield" and let the force protect you!
DIY TESLA LIGHTNING by Nick Field
Build a giant Tesla Coil and challenge Zeus at creating lightning!
CIRCUIT TESTER by Owen Bishop
Simply check for open and short circuits with another "Top Tenner" project.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Processors having 400 million transistors and running at 10GHz will soon be reality.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Firewall Software
UNDERSTANDING INDUCTORS by Raymond Haigh
Chokes, coils, and transformers -- a practical look at these important components.
INTERFACE by Robert Penfold
Multi-channel analog-to-digital PC interface.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Phase-locked loops.
THE SCHMITT TRIGGER - PART 5 - DIGITAL APPLICATIONS by Anthony H. Smith
A designer's guide to investigating and using Schmitt Triggers.
February 2001
Special Supplement
HOW TO USE GRAPHICS LCDS WITH PICS by John Becker
A step-by-step guide to understanding and using pixel-matrixed graphics liquid crystal displays with your PIC microcontroller projects.
Projects and Circuits
ICE ALERT by Terry de Vaux-Balbirnie
Tri-color LED wards motorists and gardeners of impending frost danger.
SIMPLE METRONOME by Owen Bishop
Have a good musical time with another "Top Tenner" beginner's project.
INGENUITY UNLIMITED hosted by Alan Winstanley
Garden Lighting Controller
PC AUDIO POWER METER by Robert Penfold
How to create your own local two-way chat zone
PIC-MONITORED DUAL PSU by John Becker
Workshop power supply with multiple options and monitoring of voltage and current using a PIC microcontroller plus LCD readout.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Organic LEDs make their appearance
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Voltage Multipliers; More on Multimeters
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Net Browser Formats
THE SCHMITT TRIGGER - Part 4
Astable, PWM, Triangle Waveforms, Transducer Interface by Anthony H Smith
A designers' guide to investigating and using Schmitt triggers
January 2001
Projects and Circuits
VERSATILE OPTICAL TRIGGER by Owen Bishop
A Top-Tenner beginner’s project for light-controlled electrical equipment.
UFO DETECTOR AND EVENT RECORDER by Raymond Haigh
Charting the X-files revolution!
INGENUITY UNLIMITED hosted by Alan Winstanley
Wide Range Squarewave Generator; Etch Tank/UV Light Box Control System; Pico Prizewinners
TWO-WAY INTERCOM by Andy Flind
How to create your own local two-way chat zone
PIC-MONITORED DUAL PSU by John Becker
Workshop power supply with multiple options and monitoring of voltage and current using a PIC microcontroller plus LCD readout.
Series and Features
USING PICS AND KEYPADS by John Becker
How to interface PICs to matrixed keypad switches, plus LCD readout.
NEW TECHNOLOGY UPDATE by Ian Poole
Organic Lasers
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Voltage Multiplier Circuits; UK/USA Clock Rates
THE SCHMITT TRIGGER - PART 3
Precision Triggers and Multivibrators by Anthony H Smith
A designer's guide to investigating and using Schmitt triggers
PRACTICALLY SPEAKING by Robert Penfold
A novice's guide to component polarity.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Backing-Up Security; Unwilling BT Partners
CIRSIM SHAREWARE REVIEW by Colin Sloan
Examining a Circuit Simulation Program for PC Computers
DECEMBER 2000
Projects and Circuits
PIC-MONITORED DUAL PSU - Part 1 by John Becker
Workshop power supply with multiple options and monitoring of voltage and current using a PIC microcontroller plus LCD readout.
STATIC FIELD DETECTOR by Robert Penfold
An amusing "electroscope" starter project that reveals if your friends are "highly charged"!
MOTORISTS' BUZZ BOX by Terry de Vaux-Balbirnie
A multipurpose piece of test equipment for the intrepid car owner
INGENUITY UNLIMITED hosted by Alan Winstanley
Car Wash-Wipe Latch; Missed Call Indicator; Scissors, Paper, Stone
SPECIAL CHRISTMAS SUPPLEMENT (Available FREE from the EPE Online Library)
TWINKLING STAR by Bart Trepak
Twinkle twinkle little LED, brighten our festives as we're fed!
CHRISTMAS BUBBLE by Owen Bishop
Keep the party balloons intact - watch light bubbles burst instead!
FESTIVE FADER by Steve Dellow
Relax your Noelistic senses with smoothly changing lighting effects!
PICTOGRAM hosted by Andy Flind
Become a novelty flasher at the Mad Hatter's (or other's) Christmas party!
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Inkjet and optical technologies combine to provide greater comms bandwidth.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Switched-Mode Power Supplies
THE SCHMITT TRIGGER - PART 2
OPAMP AND COMPARATOR TRIGGERS by Anthony H Smith
A designer's guide to investigating and using Schmitt triggers
INTERFACE by Robert Penfold
Extended temperature PC Interface Software.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Freeserve -- and other "unmetered" servers
QUASAR KITS REVIEW by Robert Penfold
Examining the merits of a dozen electronic kits from Quasar
NOVEMBER 2000
Projects and Circuits
SAMPLE-AND-HOLD by Owen Bishop
A Top-Tenner add-on unit for your multimeter.
OPTO-ALARM SYSTEM by Stephen Spencer
Keep would-be intruders at bay with this portable, optically balanced security alarm.
PIC PULSOMETER by Richard Hinckley
Accurately measures and displays timings, frequency, and capacitance.
HANDCLAP SWITCH by Tom Webb
Let there be light -- quick as the clappers!
INGENUITY UNLIMITED hosted by Alan Winstanley
Single-Phase Power Regulator; Macrovision Blanker
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
A new combined dual chipset improves digital image capture.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Circuit breakers; PCB track widths
PIC TOOLKIT MK2 UPDATE 2.4 by John Becker
More software facilities are added to this versatile PIC programmer.
THE SCHMITT TRIGGER - PART 1
BIPOLAR TRANSISTOR TRIGGERS by Anthony H Smith
A designer's guide to investigating and using Schmitt triggers
PIC LOGICATOR REVIEW by Robert Penfold
How to learn PIC programming by the flow chart method.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
AltaVista Cashes out; Sense of Deja Vu; V.92 Modems
OCTOBER 2000
Projects and Circuits
WIND-UP TORCH/FLASHLIGHT by Thomas Scarborough
An occasional twist of a knob provides light without battery power.
PIC-BASED DUAL-CHANNEL VIRTUAL OSCILLOSCOPE by John Becker
A virtual oscilloscope interface for monitoring audio frequency signals via your computer.
FRIDGE/FREEZER ALARM by Owen Bishop
Another "Top-Tenner" project -- audibly warns of imminent money loss!
EPE MOODLOOP FIELD STRENGTH INDICATOR by Andy Flind
Check that your Moodloop's loop is working, and find the sources of 50HZ mains fields.
INGENUITY UNLIMITED hosted by Alan Winstanley
Anti-Tamper Loop Alarm; Doorbell Extension and Entry/Exit Indicator; Mini Photo Slave Flash; Color TV Tester Add-On
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
IBM proposes a microprocessor that performs one quadrillion operations per second.
TEACH-IN 2000 - Part 12 - 7-segment displays, liquid crystal displays (LCDs), Digital-to-Analogue, Miscellany by John Becker
Concluding our 12-part series providing essential info for the electronics novice, with breadboard experiments and interactive computer simulations.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Testing transistors the quick and easy way; Keep soldering on; Earthy feelings
INTERFACE by Robert Penfold
Digital and Analogue Temperature PC Interface
PEAK ATLAS COMPONENT ANALYSER REVIEW by Andy Flind
Testing a surprisingly powerful semiconductor analyzer
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Multiple Choice Mail; Problems Addressed
SEPTEMBER 2000
Projects and Circuits
STEEPLECHASE GAME by Owen Bishop
Another Top-Tenor design - how well can your horse jump the fences?
ACTIVE FERRITE LOOP AERIAL by Raymond Haigh
Superbly designed vertically and horizontally rotating reception optimizer
EPE MOODLOOP POWER SUPPLY by Andy Flind
Stable power your Moodloop and other 13.2V or 12V 1A designs
REMOTE CONTROL IR DECODER by Roger Thomas
Allows PIC programming enthusiasts to remotely control their designs
INGENUITY UNLIMITED hosted by Alan Winstanley
PIC UPS; Loudener; Radio Sleep Timer; ’Scope Synchronizer
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Micromagnetic isolation enhances high-speed data transfer
TEACH-IN 2000 - Part 11 by John Becker
Voltage regulation, integration, and differentiation. Essential info for the electronics novice, with breadboard experiments and interactive computer simulations.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Common Ground; Beginner’s Questions; Shocking Stuff; Ferric Disposal; Assault and Ni-Cad Battery; Gas Gauge Chips; Down with Heavy Metal; RAM your Batteries
PRACTICALLY SPEAKING by Robert Penfold
A novice’s guide to project building
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Check the Google box
AUGUST 2000
Projects and Circuits
HANDY-AMP by Terry de Vaux-Balbirnie
A simple multi-purpose amp with built-in speaker and headphone output
QUIZ GAME INDICATOR by Max Horsey and Tom Webb
A low-cost fun project that cannot be questioned
EPE MOODLOOP by Andy Flind
Have a relaxing "field-day’’ (or night) with Andy’s latest mood modifier!
DOOR PROTECTOR by Owen Bishop
The first in a series of "Top-Tenner’’ projects, featuring simple designs that can be built for around 10 UK pounds ($16 US)
INGENUITY UNLIMITED hosted by Alan Winstanley
Cool Controller; VOM Continuity Buzzer; Square Wave Circuit
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Atom-sized electronic devices are being developed
TEACH-IN 2000 - Part 10 by John Becker
Transformers and Rectifiers. Essential info for the electronics novice, with breadboard experiments and interactive computer simulations.
CAVE ELECTRONICS by Mike Bedford
How electronics assists (and electro-lights) explorers of the troglodyte underworld!
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Get wise about Piecewise and Lambda
INTERFACE by Robert Penfold
Four-Range Resistance Meter PC Interface
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
BT’s Surftime, UNIX Permissions
JULY 2000
Projects and Circuits
CAMERA SHUTTER TIMER by Robert Penfold
Make sure you get the right exposure with this simple design
g-METER by Bill Mooney
Uses a space age chip to measure g- forces
PIC-GEN FREQUENCY GENERATOR/COUNTER by John Becker
Versatile PIC-based test equipment
ATMOSPHERIC ELECTRICITY DETECTER - Part 2 by Keith Garwell
Investigate nature’s powerhouse with this intriguing experimental design
INGENUITY UNLIMITED hosted by Alan Winstanley
Multipurpose AC Detector/Switch; Versatile Car Interior Light Delay; Musical Chip Amplifier; Narrow SCSI Active Terminator
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Aerogel foam capacitors
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Checking the Chips; Low Voltage Detector
PRACTICALLY SPEAKING by Robert Penfold
Front panel labels for projects
PICO DrDAQ REVIEW by Robert Penfold
Robert puts a data logger from Pico Technology through its paces
TEACH-IN 2000 - Part 9 by John Becker
Transistors. Essential info for electronic novices with bread board experiments and interactive computer simulations.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Fried SPAM
JUNE 2000
Projects and Circuits
ATMOSPHERIC ELECTRICITY DETECTER - Part 1 by Keith Garwell
Investigate Nature’s power-house with this intriguing experimental design
AUTOMATIC NIGHTLIGHT by Robert Penfold
A simple starter project to lighten the darkness for the young and the frail
CANUTE TIDE PREDICTER by John Becker
A simple tied calculator for paddlers, dabblers, and kings of the sandcastle
MULTI-CHANNEL TRANSMISSION SYSTEM - Part 1 by Andy Flind
Concluding the 8 to 16-channel 2-wire signaling link with optional interface for private phones systems
INGENUITY UNLIMITED hosted by Alan Winstanley
Voltage Booster; Air-flow Detector; Clock Detector; Pico prize winners
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
New techniques improve the size and efficiency of fuel cells
INTERFACE by Robert Penfold
Obtaining power from a PC’s serial and parallel ports
TECHNOLOGY TIMELINES - Part 5 by Clive "Max" Maxfield and Alvin Brown
Concluding the fascinating story of how technology has developed in the last millennium, with a misty gaze into what the future might hold
TEACH-IN 2000 - Part 8 by John Becker
Comparators, mixers, audio and sensor amplifiers. Essential info for the electronics novice, with breadboard experiments and interactive computer simulations
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Looking for trouble? A constructor’s guide to methodical fault finding
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
CompuServe in perspective
MAY 2000
Projects and Circuits
VERSATILE MIC/AUDIO PREAMPLIFIER by Raymond Haigh
New chip SSM2166 offers AGC compression, limiting, and noise reduction
LOW-COST CAPACITANCE METER by Robert Penfold
An easy-to-build Starter Project that adds a useful tool to your workshop
MULTI-CHANNEL TRANSMISSION SYSTEM - Part 1 by Andy Flind
An 8 to 16-channel 2-wire signaling link with optional interface
PIR LIGHT CHECKER by Terry de Vaux-Balbirnie
Be trigger happy with your outdoor security light system!
INGENUITY UNLIMITED hosted by Alan Winstanley
Sensitive Hall Effect Switch; Infrared Remote Tester; Experimenter’s Power Supply
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Lower operating voltages speed microprocessor rates, but heat dissipation becomes more of a problem
TECHNOLOGY TIMELINES - Part 4 – Computing 1900 to 1999 by Clive Maxfield and Alvin Brown
Who, what, where and when - the fascinating story of how technology developed in the last millennium.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Opamps - outputs and short-circuit protection; Battery Flattery
TEACH-IN 2000 - Part 7 by John Becker
Essential info for the electronics novice, with breadboard experiments and interactive computer simulations
PRACTICALLY SPEAKING by Robert Penfold
A novice’s guide to using stripboard
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Google Box; Free for All; Under the Surf; Looking Ahead
APRIL 2000
Projects and Circuits
FLASH SLAVE by Robert Penfold
Make a striking image with this latest starter project
GARAGE LINK by Terry de Vaux-Balbirnie
An open and shut case for a 418MHz transmitter/receiver link
MICRO-PICSCOPE by John Becker
Plenty of scope for this ingenious piece of portable test gear
HIGH PERFORMANCE REGENERATIVE RECEIVER - Part 1 by Raymond Haigh
Construction of our "art deco" receiver
INGENUITY UNLIMITED hosted by Alan Winstanley
PC controlled DC Motor; Omni-directional Pendulum; Brushless Fan Speed Control
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Electronic lnk - is this the real dawn of the paper-less office?
TECHNOLOGY TIMELINES - Part 3 – Communications and Related Technologies 1900 to 1999 by Clive "Max" Maxfield and Alvin Brown
The fascinating story of how technology developed in the last millennium
INTERFACE by Robert Penfold
Bidirectional printer ports
TEACH-IN 2000 - Part 6 by John Becker
Logic, gates, binary and hex logic. Essential info for the electronic novice with breadboard experiments and interactive computer simulations.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Opamps – Getting Loaded; Biased Approach; Socket to Me; Surface-Mount Selection
TELCAN HOME VIDEO by Barrie Blake-Coleman
A British first in home video recording
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
I’m Sch.uk Up; I’ll name that domain in one
MARCH 2000
Projects and Circuits
PARKING WARNING SYSTEM by Tom Webb
Avoid having an unwanted rear entrance to your garage!
HIGH PERFORMANCE REGENERATIVE RECEIVER - Part 1 by Raymond Haigh
Beautifully designed receiver covering the 130kHz to 30MHz global broadcast and amateur bands
AUTOMATIC TRAIN SIGNAL by Robert Penfold
Easy-to-build, low-cost Starter Project for model railways
EPE ICEBREAKER by Mark Stuart
Real-time PIC In-Circuit emulator, programmer, debugger, and development system
INGENUITY UNLIMITED hosted by Alan Winstanley
Delay-On Timer; 555 Power Supply; PIC Adapter Socket; Shaky Dice, ...
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Magnetic memories threaten conventional and Flash devices
TECHNOLOGY TIMELINES - Part 2 - Days of Later Yore and Fundamental 20th Century Electronics by Clive "Max" Maxfield & Alvin Brown
Who, what, where, and when - the fascinating story of how technology developed in the past millennium.
TEACH-IN 2000 - Part 5 by John Becker
Waveforms, frequency, and time. Essential info for the electronics novice, with breadboard experiments and interactive computer simulations.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Opamp Differentials; Hot Regulator; Conventional Current Flow
PRACTICALLY SPEAKING by Robert Penfold
A novice’s guide to resistors and potentiometers
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Radio Bygones Message Board; Search Engines; Disappearing URLs
FEBUARY 2000
Projects and Circuits
EASY-TYPIST TAPE CONTROLLER by Andy Flind
Soundly helps copy-typists who can’t type!
VOLTAGE MONITOR by Robert Penfold
This month’s Starter Project illuminates your battery’s condition
PIC VIDEO CLEANER by Mike Delaney
Improving video viewing on poorly maintained TVs and VCRs
FIND IT - DON’T LOSE IT! by Terry de Vaux-Balbirnie
Offering the key to enlightened location finding!
INGENUITY UNLIMITED hosted by Alan Winstanley
Mini Disc Optical Interface; VCO Generator
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Latest developments in LED efficiency
TECHNOLOGY TIMELINES - Part 1 - Days of Yore by Alvin Brown & Clive "Max" Maxfield
Who, what, where, and when - the fascinating store of how technology developed in the past millennium.
INTERFACE by Robert Penfold
12 Bit serial ADC using the AD7896
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Bistable Switches; Noise Source; Opamps - Signal Handling
TEACH-IN 2000 - Part 4 by John Becker
Diodes and light-emitting diodes (LEDs). Essential info for the electronics novice, with breadboard experiments and Interactive computer simulations.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Sweet Dreamcasts; Cut the Phone Tariffs; Christmas Litmus
JANUARY 2000
Projects and Circuits
FLASHING SNOWMAN by Robert Penfold
Add a sparkle of light to your festive decorations with this fun starter project
VERSATILE BURGLAR ALARM by Ian March
Simple, extendable, and easy to use indoor security monitoring
SCRATCH BLANKER by Robert Penfold
Spin doctoring for a better sound bite!
VEHICLE FROST BOX by Steve Dellow
Helps predict the presence of black ice
INGENUITY UNLIMITED hosted by Alan Winstanley
Low-cost AA to PP3 Converter; Electric Garage Door Status Indicator
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
New SAW devices act as chemical detectors
TEACH-IN 2000 - Part 3 by John Becker
Potentiometers, sensor resistors, and Ohm’s Law. Essential info for the electronics novices with breadboard experiments and interactive computer simulations
TINA PRO REVIEW by Mike Tooley BA
Examining an excellent CD-ROM based electronics teaching, design, and analysis tool
PRACTICALLY SPEAKING by Robert Penfold
A novice’s guide to mains power projects
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Teach-in Amplifiers; More on Opamps; Electrical ratings
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Half a Decade On; Effective Suggestions; Pet Hates; The End is Nigh
DECEMBER 99
Projects and Circuits
PIC MICRO-PROBE by Jim Main
A hardware tool to help debug your PIC software
MAGNETIC FIELD DETECTOR by Robert Penfold
Where’s the attraction? Find out with this Starter Project!
LOFT GUARD by Terry de Vaux-Balbirnie
A lofty way to keep your power bills low!
GINORMOUS STOPWATCH - Part 2 by Ned Stojadinovic
Adding giant digits to your Stopwatch display
INGENUITY UNLIMITED SPECIAL hosted by Alan Winstanley
Serial Port Splitter; Elderly Person Monitor; Rechargeable PP9 Battery; Class-D 30W Audio Amplifier; National Lottery Predictor; Tumble Dryer Alarm; Narrow Band Vision; Squash/Badminton Scorer; Time-Lapse Unit for Camcorder; Audio Limiter.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Curly nanotubes could determine the nature of future transistors
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Opamps 101; Fusible resistors
INTERFACE by Robert Penfold
A serial approach to PC add-ons.
PRACTICAL OSCILLATOR DESIGNS - Part 6 by Raymond Haigh
Resistor/capacitor oscillators. Worked examples and circuit info for hands-on constructors.
TEACH-IN 2000 - Part 2 by John Becker
Capacitors and RC Timing. Essential info for the electronics novice, with breadboard experiments and interactive computer simulations.
The Joy of EL! by Mike Ceranski
Everything you needed to know about electroluminescent cable but were too afraid to ask!
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Jet Scream; Help Us to Help You; Brow-beaten; Help-line
NOVEMBER 99
Projects and Circuits
GINORMOUS STOPWATCH - Part 1 by Ned Stojadinovic
Events timer with in-built LCD and remote big digit displays, plus radio-controlled gating
VIBRALARM by Terry de Vaux-Balbirnie
Multi-purpose vibration-triggered alarm with remarkable sensitivity
DEMISTER ONE SHOT by Terry de Vaux-Balbirnie
Save car battery use and fuel consumption by minimizing rear-screen power-on times!
ACOUSTIC PROBE by Robert Penfold
An Audio "telescope" or stethoscope to investigate distant or low-level sounds (another starter project).
INGENUITY UNLIMITED hosted by Alan Winstanley
One-volt LED
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Copper-based interconnections in ICs increase their operational speed
TEACH-IN 2000 - Part 1 by John Becker
Color codes and resistors. Essential info for the electronics novice, with breadboard experiments and interactive computer simulations.
PRACTICAL OSCILLATOR DESIGNS - Part 5 by Raymond Haigh
Crystal and crystal-controlled oscillators. Worked examples and circuit info for hands-on constructors
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
More Earthly Comments; Thermal Conductivity; Oscillator Feedback; Simulations; Asta Movistor
PRACTICALLY SPEAKING by Robert Penfold
A novice’s guide to identifying integrated circuits
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Happy Kris-mas; I Seek-You
OCTOBER 99
Projects and Circuits
INTERIOR LAMP DELAY by Steve Challis
Don’t you just hate being plunged into darkness when the car door shuts? Here’s a solution! Plus lights on alarm and battery saver.
MAINS CABLE DETECTOR by Robert Penfold
This simple starter project detects main cables by sensing their "hum"
QWL LOUDSPEAKER SYSTEM by John Dix
Enjoy superb hi-fi sound at a fraction of the cost of an equivalent commercial speaker system
MICRO POWER SUPPLY by Andy Flind
Supplies a well-regulated + 5V even if your battery’s nearly flat!
INGENUITY UNLIMITED hosted by Alan Winstanley
Shoestring MW Radio; Auto Supply Crowbar
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Sensing electron spin-directions increases hard disk densities
PRACTICAL OSCILLATOR DESIGNS - Part 4 by Raymond Haigh
Negative resistance oscillators. Worked examples and circuits information for hands on constructors.
PIC16F87x MINI TUTORIAL by John Becker
Practical guidance on using the new PIC microcontroller family
INTERFACE by Robert Penfold
More serial interfacing to your PC
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Low Voltage 555; Digital Panel Meters; Sound Levels and Decibels
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Explore New Options (MSIE 5.0); 1984 And All That; Looking Ahead
SEPTEMBER 99
Projects and Circuits
LOOP AERIAL SW RECEIVER by Robert Penfold
Discover the thrill of making your own radio with this simple starter project!
VARIABLE DUAL POWER SUPPLY by Tony Sercombe
Fully variable +/- 3V to +/- 15V up to 500mA, and short proof!
CHILD GUARD by tom Webb
Helping to protect your loved ones, an audible warning sounds if children (or others) approach a fire.
8-CHANNEL ANALOG DATA LOGGER – Part 2 by John Becker
How to use this highly versatile PIC16F877 mircocontrolled design
INGENUITY UNLIMITED hosted by Alan Winstanley
Theatrical Cue Light; Morse Practice Oscillator; Keypad Code Controller; Intercom/Baby Listener; TV Test Pattern Generator
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Optical phase-shifting helps photolithography reduce chip size
POWER GENERATION FROM PIPELINES TO PYLONS - Part 2 by Alan Winstanley
Concluding is on-site tour of electrical power generation and delivery in the UK
PRACTICALLY SPEAKING by Robert Penfold
A novice’s guide to capacitor types and choices
PRACTICAL OSCILLATOR DESIGNS - Part 3 by Raymond Haigh
Armstrong, Meissner, Franklin, and Butler, plus RF probes. Worked examples and circuit information for hands-on construction.
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Transducer User; Photo-sensor; RMS - Stand by for the Maths; Powerless to Help
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Desoldering guide; Zoom through the Hayes; Big-footed Email for Life; Virus Updates
AUGUST 99
Projects and Circuits
ULTRASONIC PUNCTURE FINDER by Bill Mooney
Find that elusive puncture speedily and without water!
MAGNETIC FIELD DETECTIVE by Andy Flind
A neat and sensitive instrument for detecting low-level magnetic fields
FREEZER ALARM by Robert Penfold
Another low cost starter project - how to avoid an expensive thaw!
8-CHANNEL ANALOG DATA LOGGER – Part 1 by John Becker
The new PIC16F877 microcontroller offers versatile logging opportunities
SOUND-ACTIVATED SWITCH by Bart Trepak
Just one logic gate allows a sample mic to control - well almost anything
INGENUITY UNLIMITED hosted by Alan Winstanley
Loop aerial MW Radio; Mayday Module; NiCad Discharge Unit
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Field emission displays challenging CRTs
POWER GENERATION FROM PIPELINES TO PYLONS - Part 1 by Alan Winstanley
An on-site guided tour of how electrical power is generated and delivered in the UK
INTERFACE by Robert Penfold
Visual programming and PC add-ons
PRACTICAL OSCILLATOR DESIGNS - Part 2 by Raymond Haigh
Colpitts and its variants. Worked examples and circuit info for hands on constructors
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Electric Enlightenment; Mysterious Multivibrator; Transistors in a PICkle
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Explorer 5 Comes of Age; Hidden Worms; Trojan Trounced
JULY 99
Projects and Circuits
12V BATTERY TESTER by Terry de Vaux-Balbirnie
Give a probing health check to your lead-acid batteries
LED STROBOSCOPE by Robert Penfold
Another low cost starter project - how to freeze the motion of small machines
EPE MOOD PICKLER by Andy Flind
Oh for good nights sleep! Insomniacs rejoice - your wakeful nights could be over with this mini-micro under the pillow
INTRUDER DETERRENT by Bart Trepak
Is there anyone at home? Would-be intruders may never be sure if the lights keep switching.
INGENUITY UNLIMITED hosted by Alan Winstanley
Superior Heads-Tails indicator; Home Alarm System
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
New processes provide improved thick film performance
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Gate Post - SCR and triac triggering; Stripboard and High Voltages; Currents and Dielectrics
PRACTICAL OSCILLATOR DESIGNS - Part 1 by Raymond Haigh
Hartley and its variants. Worked examples and circuit info for hands-on constructors
PRACTICALLY SPEAKING by Robert Penfold
Making better connections with sockets and switches
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
It’s a Hoax; Fall-out; Stuck on the Ramp
JUNE 99
Projects and Circuits
CLIPPING VIDEO FADER by Robert Penfold
The first in new series of starter projects - add a simple fading facility to your camcorder/TV link
PC AUDIO FREQUENCY METER by Robert Penfold
Use your PC’s bidirectional printer port to monitor frequencies up to 32KHz
MUSICAL SUNDIAL by John Becker
When the sun has got his hat off (hip-hip-hip-hooray) there’s no shadow of doubt you’ll find fun with our musical garden gnomon!
PIC TOOLKIT MK2 - Part 2 by John Becker
Concluding with detailed discussions of the many software options offered by this sophisticated PIC ‘F87x and ‘x84 programmer
INGENUITY UNLIMITED hosted by Alan Winstanley
Car Auxiliary Power Protection; Metal Detector Adapter; Alarm Add-on
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Innovative encapsulation heralds even similar i.c. packages
ALAN DOWER BLUMLEIN by Barrie Blake Coleman
An unsung genius who greatly influenced the development of 20th century electronics
INTERFACE by Robert Penfold
Using Delphi to visually program your PC as a virtual meter
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
More on Current Sources; Current Mirrors; Solder Joint Protection; Etching and Electroplating
EDISON 3 REVIEW by Robert Penfold
Talking a close-up look at an upgraded circuit simulation and analysis program
PhizzyB COMPUTERS - Part 8 by Clive "Max" Maxfield and Alvin Brown
And now the (random) end is here, let us say (not IN a shy way), they did it their way - and you’ve been Phizzybly moved by it, haven’t you?
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Melissa’s Mayhem; Cool Talk; Updates
MAY 99
Projects and Circuits
MIDI HANDBELLS by Robert Penfold
Ring out thy bells with merry tolling - plus a MIDI PIC-up of course
AM/FM RADIO REMOTE CONTROL by Max Horsey
Coded radio remote control has become straightforward and requires no UK license
PhizzyB COMPUTERS - Part 7 by Alan Winstanley
Ma, it’s making eyes at me! The PhizzyBot now has vision - here’s how …
PIC TOOLKIT MK2 - Part 1 by John Becker
Expanding Toolkit MK1 to include the new PIC16F87x devices as well as the familiar ‘x84s, plus many more features.
INGENUITY UNLIMITED hosted by Alan Winstanley
Photo Slave Flash Unit; Siren Sounder; Space Case Alarm; Electronic Rotary Switch; Pico Prize Winners
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
New bonding techniques enhance power handing for IGBT devices
CIRCUIT SURGERY by Alan Winstanley and Ian Bell
Current sources - a close-up explanation
PC ENGINES - from the 4004 to the PENTIUM III by Errnest Flint
A brief history of time as Intel’s microprocessors see it!
PRACTICALLY SPEAKING by Robert Penfold
The nuts and bolts of casing your projects more easily.
PhizzyB COMPUTERS - Part 7 by Clive "Max" Maxfield and Alvin Brown
Giving PhizzyBility to the PhizzyBot needs a bit of software, but not much.
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
The worms have turned; Under attack; Don’t panic; Update
APRIL 99
Projects and Circuits
MECHANICAL RADIO by Bart Trepak
Wrist power provides a renewable radio energy source
VOICE RECORD/PLAYBACK MODULE by Robert Penfold
Less cuddly than a Firby, but more useful
VERSATILE EVENT COUNTER by John Becker
Count and time music beats, rowing rates, clock ticks and more
PhizzyB COMPUTERS - Part 6 by Alan Winstanley
It’s time to add feelers to the PhizzyBot;s guidance control
IRONING BOARD SAVER by Robert Hunt
Save energy with this safety add on
INGENUITY UNLIMITED hosted by Alan Winstanley
Audio Limiter; Remote Control Tester; Video Amplifier
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Micro-electromechanical systems offer computer security solutions
MODULAR CIRCUIT DESIGN CD-ROM by Robert Penfold
Software to help hobbyist designers achieve their circuit goals
PIC16F87x MICROCONTROLLERS by John Becker
Microchip’s new EPROM PICs have even more to offer than the 84’s
MAX761 DC-to-DC CONVERTER by Andy Flind
How to squeeze the max out of your batteries
PhizzyB COMPUTERS - Part 6 by Clive "Max" Maxfield, Alvin Brown
Routines to program the PhizzyBot with collision detection and avoidance.
DATA-NET REVIEW by Robert Penfold
A ten CD-ROM library of semiconductor data is put to the test.
INTERFACE by Robert Penfold
AD8300 serial digital-to-analog converter - PC controlled
CIRCUIT SURGERY by Alan Winstanley
Solid State Relays; Photovoltaic Relays; Electret Microphones - the plot thickens!
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Freeserve support costs less; Freeserve sans CD; BT Click goes FREE; … and more!
MARCH 99
Projects and Circuits
SMOKE ABSORBER by Bill Mooney
You don’t really want to inhale solder fumes do you? Help to avoid them with our neat little heat triggered tool
AUTO CUPBOARD LIGHT by Terry de Vaux-Balbirnie
Let there be light - whenever you open the door to the depths of darkness in your wardrobe!
PhizzyB COMPUTERS - PART 5 by Alan Winstanley
Constructing the motorized platform and controller for the PhizzyBot
TIME AND DATE GENERATOR by Tony Hart
Add time and date codes to your CCTV security monitoring cameras
WIRELESS MONITORING SYSTEM by James Humphris
Our low cost radio linked short-range data longer software and discussing f.m. Conversation.
INGENUITY UNLIMITED hosted by Alan Winstanley
Motor controller with Center Off
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
With over five million color pixels, experimental "Roentgen" LCD screens have resolutions approaching that of a human eye.
PhizzyB COMPUTERS - PART 5 by Clive "Max" Maxfield and Alvin Brown
Discussing the command routines for controlling the PhizzyBot wheeled robot.
PRACTICALLY SPEAKING by Robert Penfold
How to achieve those longer case holes more easily
CIRCUIT SURGERY by Alan Winstanley
Regulators Sum it Up; Electret Microphones; Quick Cap Check
FEBRUARY 99
Projects and Circuits
PIC MIDI SUSTAIN PEDAL by Robert Penfold
Add sustain and glissando to your MIDI line up with this inexpensive PIC-controlled effects unit.
LIGHT ALARM by Gavin Cheeseman
Looking for undercover protection? Try this simple light-activated alarm!
WIRELESS MONITORING SYSTEM - Part 1 by James Humpris
Low-cost radio-linked short-range date logging is now readily and simply available.
PhizzyB COMPUTERS - Part 4 by Alan Winstanley
Constructing and testing the 8-switch polling and latching modules
INGENUITY UNLIMITED hosted by Alan Winstanley
Zener diode tester; Microcontroller Interface for AC monitoring; Reverse Polarity Indicator; AF Sweep Signal Generator
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
MESFETS, PHEMTs, and HBTs. Examining the latest RF semiconductor techniques for cellular phones.
TECHNIQUES - ACTUALLY DOING IT by Robert Penfold
Getting it working when it doesn’t!
SCOLAR POWER by Terry de Vaux-Balbirnie B.Sc.
Schools in England are switching on to a new Government scolar power initiative.
PHIZZY-B COMPUTERS - Part 4 by Clive "Max" Maxfield and Alvin Brown
Examining the respective merits of Polling and Latching techniques
CIRCUIT SURGERY by Alan Winstanley
Electret "Mics"; Textbook Voltage; Relays - More Contacts; PCB facilities in Singapore
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Freeserve Rising Fast; Give it a Whirl; More to Come
JANUARY 99
Projects and Circuits
ALTERNATIVE COURTESY LIGHT CONTROLLER by Paul Brigham
Motorists - lighten the depths of darkness in your garage or driveway.
TWINKLE TWINKLE REACTION GAME by John Koushappas
Twinkle, twinkle little chip, you’ll be tuneful if we’re quick!
VOLUME COMPRESSOR by Robert Penfeld
Taking a level approach to cracking the TV ads sound barrier.
PhizzyB COMPUTERS - Part 3 by Alan Winstanley
Constructing and testing the alphanumeric LCD interface board.
EPE MIND PICKLER - Part 2 by Andy Flind
Construction of our mind machine - and then you can relax!
INGENUITY UNLIMITED hosted by Alan Winstanley
Using solenoid valves in place of motorized valves; Mini siren alarm; Cooling monitor for outboard engines.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
Engineering assembles for future recycling disassembly
FROM RUSSIA WITH LOVE by Barry Fox
After touring the Russian Cosmodrome, Barry relates how Russian rockets are launching American Satellites.
CIRCUIT SURGERY by Alan Winstanley
Solder tips; Logic Circuitry "Internals"; Net those chips; Voltage and Ground
PhizzyB COMPUTERS - Part 3 by Clive "Max" Maxfield and Alvin Brown
Programming with shifts, rotates, stacks, and alphanumeric LCDs
UPDATE DOWN UNDER by Glen Sawyer
Our man on the spot talks about what’s hot and what’s not down under!
HOW VIRTUAL IS YOUR REALITY? by Clive "Max" Maxfield
A report from the world’s largest visual simulation show - ITSEC 98
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Freeserve - Not so Free; The Apple of your iMac; Core Thought
DECEMBER 98
Projects and Circuits
EPE MIND PICKLER - Part 1 by Andy Flind
Want seven ways to relax? Try our PIC controlled mind machine!
FADING CHRISMAS LIGHTS by Bart Trepak
How seasonal How festive! But how different!
RELIABLE 15-WAY INFRA-RED REMOTE CONTROL - Part 2 by Max Horsey
How to build reliable IR systems and increase your control options.
HANDHELD FUNCTION GENERATOR by Brain Adkinson
Sine, triangle, and square wave signals always at hand, with almost full audio range coverage and output adjustability.
PhizzyB COMPUTERS - Part 2 by Alan Winstaney
Constructing and testing the input Switch and output LED interface boards.
INGENUITY UNLIMITED hosted by Alan Winstanley
Hot Wire Anemometer; Soldering Iron "Ready" Indicator; Lossless Current Sensing; Foghorn Timing Switch
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
"Test tube" takes on a new meaning for microelectronics: Oxygenation extends chip performance.
PhizzyB COMPUTERS - Part 2 by Clive "Max" Maxfield and Alvin Brown
Discussing the programming for the input and output boards.
CD-ROM COMPUTER ENCYLOPEDIA REVIEW by Clive "Max" Maxfield
INTERFACE by Robert Penfold
Serial LCD Remote Monitor for your PC
CIRCUIT SURGERY by Alan Winstanley
Null modems and D-connectors; Pull-ups and Relays, Light-dependent Switch
NET WORK - THE INTERNET PAGE surfed by Alan Winstanley
Plight of the navigator; black spot; software selection
NOVEMBER 98
Projects and Circuits
PIC TAPE MEASURE by John Becker
You’ve got it taped if you PIC this ultrasonic measuring calculator.
PhizzyB COMPUTERS - Part 1 by Alan Winstanley
Constructing and testing the PhizzyB computer board.
RELIABLE 15-WAY INFRA-RED REMOTE CONTROL - Part 1 by Max Horsey
How to build reliable IR systems and increase your control options.
INGENUITY UNLIMITED hosted by Alan Winstanley
Audio Frequency Doubler; Logic Gate tester; Courtesy Light Delay; plus prize winners.
Series and Features
NEW TECHNOLOGY UPDATE by Ian Poole
A device that provides both current and voltage control.
PhizzyB COMPUTERS - Part 1 by Clive "Max" Maxfield and Alvin Brown
A new series on understanding computers, introducing the PhizzyB and the PhizzyB Simulator.
EASY PC FOR WINDOWS 95 by Robert Penfold
Robert puts the latest No.1 Systems program under the microscope.
CIRCUIT SURGERY by Alan Winstanley
Ripple of Applause; Tool Case; Buffers for Beginners
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