Maplin Magazine Index

5/25/2018 Maplin Magazine Index

1/18INDEX VOLUMES 1 to 15 ELECTRONICS AND BEYOND

THEMAPLINMAGAZINE XU87U

Issue 4

Note: A * against an entry in the main index denotes that there is a reference to that item in Appendix C Corrigenda.

A GUIDE TO MAINS SAFETY ...........................................................................1A GUIDE TO PROFESSIONAL AUDIO...............................................................1ART OF ELECTRONIC MUSIC..........................................................................1AUDIO FREQUENCY INDUCTION LOOP SYSTEMS..........................................1AUDIO IC POWER AMPLIFIER CIRCUITS ........................................................1BOBS MINI CIRCUITS ......................................................................................1CALCS Calculations in Electronics ..............................................................2CIRCUIT MAKER (READERS CIRCUITS) ..........................................................2COMPUTERS IN THE REAL WORLD ................................................................2DATA FILE (APPLICATION CIRCUITS) .............................................................2DESIGN & APPLICATION OF SEQUENTIAL LOGIC ..........................................2DESIGNING & BUILDING SUBWOOFER SYSTEMS .........................................2DISCOVERING SATELLITE TELEVISION ..........................................................2ELECTRONIC CHRONICLES A Brief History of Electronics ..........................3ELECTRONICS BY EXPERIMENT .....................................................................3ELECTRONIC FILTER CIRCUITS ......................................................................3ELECTRONICS IN AVIATION ............................................................................3EMC - ELECTROMAGNETIC COMPATIBILITY ..................................................3EXPLORING RADIO ........................................................................................ 3FEATURES Astronomy .................................................................................3

Audio .........................................................................................3Automotive Electronics.............................................................3Aviation Electronics ..................................................................3Circuit Design ...........................................................................3Components, Active & Passive ................................................3Computer/Microprocessor........................................................4Computer Networking ...............................................................4Control.......................................................................................4Fibre Optic & Laser ..................................................................4General .....................................................................................5Logic Circuits ............................................................................5Model Control ...........................................................................5Musical .....................................................................................6Power Supplies & Batteries .....................................................6Radio Communications ............................................................6Robotics ....................................................................................6

Security/Protection ...................................................................6Telecommunications ................................................................6Test & Measurement ...............................................................6The Internet .............................................................................6Video & TV ................................................................................6

FILTERS ...........................................................................................................7FINISHING OFF ................................................................................................7FIRST BASE A Beginners Guide to Logic Design ........................................7GETTING TO KNOW TEST EQUIPMENT ...........................................................7GUIDE TO MODERN DIGITAL ICs ...................................................................7HEARING DEAFNESS & ELECTRONIC TECHNOLOGY .....................................7HELLO WHOS CALLING? History of Telephones.........................................7HISTORY OF ELECTRONICS............................................................................7HOW TO USE DIGITAL PANEL METERS ..........................................................7INDUSTRIAL ELECTRONICS ASSEMBLY A World Apart?............................7INTEGRATED CIRCUITS...................................................................................7

INTRODUCTION TO DIGITAL SIGNAL PROCESSING......................................8LED MOVING MESSAGE DISPLAY ..................................................................9

LOUDSPEAKERS The First 111 Years ..........................................................9MAINS OPERATED LINEAR DC POWER SUPPLIES.........................................9MEASURING DISTORTION IN THE HOME WORKSHOP ..................................9MICROCOMPUTER TESTING & FAULT FINDING.............................................9MINI CIRCUITS ................................................................................................9MODERN BRIDGE CIRCUITS ...........................................................................9MODULAR MIXING SYSTEM (Velleman) ........................................................9NOISE What is it and Why?.........................................................................9OUT & ABOUT..................................................................................................9PASSIVE ELECTRICAL COMPONENT GUIDE ...................................................9POWER ELECTRONICS IN THEORY & PRACTICE ...........................................9PREDICTING WAVESHAPES USING A COMPUTER .........................................9PR OJECTS Audi o.........................................................................................9

Automotive Electronics...........................................................10Computer/Microprocessor......................................................10Control.....................................................................................11Fibre Optic & Laser ................................................................11Funtronics ...............................................................................11General ...................................................................................11Model Control .........................................................................12

Musical ...................................................................................12Power Supplies & Batteries ...................................................12Radio Communications ..........................................................12Robotics ..................................................................................13Security/Protection .................................................................13Telecommunications ..............................................................13Test & Measurement ..............................................................13Video & TV ..............................................................................14

PROJECT FAULT FINDING.............................................................................14PULSES ON LINES A Beginners Guide ......................................................14RS232 SERIAL PORT EXPANSION SYSTEM .................................................14SECOND TIME AROUND ................................................................................14SEMICONDUCTOR PROCESSING ..................................................................14SOUND REINFORCEMENT SYSTEMS FOR GIGGING BANDS ........................14SQUARE 1 A First Course in the Theory & Practice of Electronics ..................14SURROUND SOUND FAD or FANCY?.........................................................14

SWITCHED MODE POWER SUPPLIES...........................................................14THE FASCINATION OF VINTAGE RADIO........................................................14THE HISTORY OF AMATEUR RADIO .............................................................14THE HISTORY OF COMPUTERS ....................................................................15THE INTERNET...............................................................................................15THE OSCILLOSCOPE IN ACTION ...................................................................15THE STORY OF RADIO ..................................................................................15USING AUDIO PREAMP ICs...........................................................................15VALUE ADDED INTERNET SERVICES ............................................................15VALVE TECHNOLOGY A Practical Guide ....................................................15VELLEMAN KITS ............................................................................................15VIDEO PROCESSING SYSTEMS ....................................................................15WAVEFORM GENERATOR CIRCUITS ............................................................15WORKING WITH OP-AMPS ...........................................................................15

APPENDIX A Magazine Volume & Number vs. Period Covered ...............16

APPENDIX B Magazine Kit Codes vs. Conventional Order Codes ............16APPENDIX C Corrigenda ............................................................................17

INDEX VOLUMES 1 to 15, NUMBERS 1 to 106

CONTENTS


2/18PAGE 1 INDEX VOLUMES 1 to 14 ELECTRONICS AND BEYOND

Title Vol. No. Page Title Vol. No. Page

A GUIDE TO MAINS SAFETYPart 1 Shock, Mains Supply Basics, Types of

Shock etc. 13 82 25

A GUIDE TO PROFESSIONAL AUDIOPart 1 Standards, Interconnection Standards,

Balanced Lines, PPM Meters * 12 64 32Part 2 Understanding Microphone

Specifications, Connectors & Impedance 12 65 48Part 3 More on Microphones, Transducer

Types, Phantom Power, Cables 12 66 67Part 4 Choosing & Using Microphones,

Amplifiers, Microphone Techniques 12 67 4Part 5 Stereo Techniques, MS Stereo,

Multi-Microphone Set Ups 12 68 48Part 6 Mixers, Theory of Operation, Virtual

Earth Mixers, Input Stages 12 69 64Part 7 Analogue Tape Recording * 12 70 40Part 8 Studio Recorders, Broadcast Cartridge,

Stereo Recorders 12 71 70Part 9 Multi-track Recording Equipment 13 72 27Part 10 Digital Recording, Media and Formats 13 73 53Part 11 Sony MiniDisc, Digital Compact

Cassette, Floppy Disk 13 74 49

Part 12 Equalisation as a Form of Correction 13 75 59

ART OF ELECTRONIC MUSICPart 1 An Introduction 14 92 20Part 2 Music Goes Digital * 14 93 10Part 3 The Art of Sampling 14 94 68Part 4 The Future 14 95 52

AUDIO FREQUENCY INDUCTION LOOP SYSTEMSPart 1 Introduction & Design 9 39 35Part 2 Small System Practice & Large System

Circuits 9 40 43Part 3 Bigger & Better Systems 10 41 43Part 4 A Practical System & Other Stories 10 42 72

Part 5 On the Receiving End 10 43 64

AUDIO IC POWER AMPLIFIER CIRCUITSPart 1 Introduction, LM386/LM389/LM381

Circuits 13 80 39Part 2 TDA7052/TDA2822/LM1877/TBA820/

LM380/LM384 Circuits 13 81 28Part 3 TBA810S to TDA1514A-N7 (6 to 40W)

Circuits 13 82 63

BOBS MINI CIRCUITSAccented Metronome 8 30 10Add-On BFO 4 14 62Adder/Subtracter (Audio) 3 9 55

AF Signal Source 8 31 22Analogue Thermometer 4 14 63Atari 8 Channel ADC 4 13 56Audio Isolator 6 22 61Audio Level Tester 6 22 58Audio Millivoltmeter 4 16 25Audio/Visual Metronome 14 88 26Baby Alarm/Intercom Amplifier 4 16 24Basic Noise Gate 8 30 12Bass Fuzz 6 21 25Cable Finder 4 14 60Camera Shutter Timer 4 14 61Capacitance Meter 4 13 56Capacitance Meter Adaptor 7 28 26

Capacitor Checker 11 47 74Cassette Processor 3 11 59CBM64/VIC-20 Sequencer Interface 4 15 26

Chorus Unit 11 57 63Clap Switch * 5 18 28CMOS Logic Tester 9 36 28Crystal Calibrator 7 28 28Crystal Checker 5 18 29Discriminating Continuity Tester 9 39 5Door Alarm 3 11 58Dual Effect Tracking Unit 11 57 62DXers Notch Filter 9 36 27DXers State Variable Filter 4 13 58

Dynamic Treble Booster 11 47 78Electronic Die 8 30 13Electronic J oystick 9 39 3Electronic Lock 7 25 59Envelope Tremolo 6 21 27Fuzz Unit 4 15 28Games Timer 7 27 28Guitar Compressor 11 57 65Guitar Headphone Amplifier 8 31 18Headphone Enhancer 2 6 46High Z Voltmeter 4 13 57In-Circuit Resistance Meter 6 22 60Low Resistance Meter 5 18 27Lowpass Filter Effects Unit 5 18 26Metal Pedal 6 23 62Microphone Preamp/Limiter 3 9 57Microphone Preamplifier 4 16 26Midi Lead Checker 11 47 75Midi Through Box 7 28 27Model Traffic Light 9 39 2Model Train Chuffer 3 12 52Model Train Signal Lights 14 88 27Model Train Steam Whistle 4 14 61Modulated Syndrum 12 60 37Morse Code Tone Decoder 9 36 26Morse Regenerator 8 31 19Movement Alarm 6 23 58Ni-Cd Charger Timer 3 9 55Noise Gate 6 21 26Opto Coupled RPM Meter 3 12 51Opto Port 6 23 61Parametric Equaliser 3 11 60Personal MW Radio 3 12 50Pink Noise Generator 6 23 60Portable Stereo Amplifier (LM377) 2 6 44Pseudo Stereo AM Radio 3 9 54Pulsed Speed Controller * 7 25 57Radio Control Field Strength Meter 12 60 36Reaction Tester 8 30 11Resistance Meter 4 13 54RF Probe 4 15 29RTTY Decoder 6 21 28Scratch & Rumble Filter 6 21 29Sensitive Flash Slave 12 60 36Series Parallel Converter 7 27 27Signal Tracer 4 15 27Signal Tracer * 9 39 4Simple Capacitance Meter 11 57 64Simple Digital Capacitance Meter 14 88 24Simple Fibre Optic link 7 27 26Simple Graphic Equaliser 14 88 26Simple Metal Locater 4 13 59Sinewave Generator 2 6 45Snooze Timer 5 18 28Sound Checker 11 47 76

Sound Triggered Flash 6 22 59Speech Processor 4 16 28Stepper Motor Driver 6 23 58


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Part 6 Keyboards, ASCII Code, Other InputDevices, VDUs * 9 38 58

Part 7 Magnetic Recording Principles, Hard &Floppy Disk Systems 9 39 25

Part 8 Linear & Stepper Motors, Control Systems 9 40 29Part 9 Printers, Dot Matrix, Daisy Wheel,

Laser, Inkjet, Thermal, Interfaces 10 41 58

DATA FILE Application Circuits418MHz Low Power Transmitter & Receiver Modules 13 73 40

78/79 Variable Voltage Regulators 11 53 6478XXX/79XXX Series Voltage Regulators 11 52 73E510 MIDI Keyboard Scanning Module 12 69 24H14/H14DL Humidity Sensors 11 55 48L200 Adjustable Voltage/Current Regulator * 10 46 48L9801 High Side Driver 11 54 32LM1035 Dual DC Operated Tone/Volume/Balance Control 8 33 32LM1037 Dual Four Channel Analogue Switch 8 34 28LM13700 Dual Transconductance Operational

Amplifier Part 1 8 31 32LM13700 Dual Transconductance Operational

Amplifier Part 2 8 32 48LM1875 20W Audio Power Amplifier 8 30 16LM331 V to F / F to V Converter 11 57 8

LM386 Low Voltage Power Amplifier 8 29 32MAX293/297 Elliptic Filter 13 80 59MF10 Universal Switched Capacitor Filter 9 38 24MN3004 Bucket Brigade Delay Line 11 48 56MN3011 BBD Reverberation Integrated Circuit 11 49 48MSM6322 Speech Pitch Controller 10 44 56Multi-Purpose 741 Operational Amplifier Card * 12 68 28RC4195 15V Regulator 11 50 32Siren Sound Generator 14 90 28SL560C Low Noise RF Amplifier 13 74 20SL561C Low Noise Preamplifier 13 76 28SL6270 AGC Microphone Preamplifier 11 51 56SSM2015 Microphone Preamplifier * 9 39 40SSM2016 Low Noise Differential Audio Preamplifer 10 41 4

SSM2017 Microphone Preamplifier 12 69 8SSM2044 4-Pole Voltage Controlled Filter 10 42 64SSM2045 Music Voicing System * 10 43 4SSM2120 Dynamic Range Processor 11 47 32

TDA1514A 50W IC Power Amplifier 9 40 64TDA3048 Infra-Red Receiver 9 35 32TDA7052 1W Power Amplifier 9 37 76TLC548I 8 Bit Analogue to Digital Converter 13 75 24UA3730 Electronic Code Lock 11 56 66ULN3390T Twilight Switch 13 73 8UM3750 Encoder/Decoder 9 36 57ZN419/409 Precision Servo Driver 10 45 24

DESIGN & APPLICATION OF SEQUENTIAL LOGICPart 1 Design Concepts involved in

Digital Electronics 11 49 64Part 2 Asynchronous Counters 11 50 19Part 3 Asynchronous MSI Chips 11 51 35Part 4 State Diagrams, Karnaugh Maps 11 52 64Part 5 Synchronous MSI Counters, TTL

Counter Chips 11 53 58Part 6 Serial & Parallel Registers, Ring Counters 11 54 10Part 7 Interfacing Counters & Registers

to Displays 11 55 58

DESIGNING & BUILDING SUBWOOFER SYSTEMSPart 1 How to Begin 13 74 57Part 2 Box Losses & Amplifier Gains 13 75 46Part 3 Adding a Tweeter 13 76 60

DISCOVERING SATELLITE TELEVISIONPart 1 The Origin 11 59 65

Stereo Bargraph 7 27 24Stereo VU Meter 7 27 25Stylus Organ 2 6 47SW Aerial Amplifier 4 16 26Syndrum Interface 3 9 56

Tape Preamplifier 4 15 27Telephone Amplifier 3 12 50Telephone Indicator 4 16 23Temperature Alarm 4 14 59Total Harmonic Distortion (THD) Filter 3 11 58

Train Controller 7 25 58Transistor Checker 4 16 23Transistor Tester 7 28 29Transistor Tester 9 39 6Treble Booster 11 47 77Tremolo Unit 3 12 51Tremolo Unit / Dynamic Tremolo Unit 12 60 34TTL Logic Pulser 8 31 21TTL Logic Tester 8 31 20Two-Tone Train Horn 14 88 24Ultrasonic Remote Control 9 36 29Voice-Over Unit 6 21 25Volume Expander 3 11 59Wah Wah Effects Unit 12 60 38Whistle Activated Indicator 11 57 66Woodblock Synthesiser 4 13 54

CALCS Calculations in ElectronicsPart 1 Complex Numbers 7 28 42Part 2 Boolean Algebra 8 29 20Part 3 Number Systems 8 30 2Part 4 Indices, Exponents & Logarithms 8 31 60Part 5 Trigonometry 8 32 27Part 6 Error Correcting Codes 8 33 43

CIRCUIT MAKER Readers CircuitsAudio Lead Connections 1 1 51Car Battery Meter 11 55 56

Car Lights Reminder 1 1 51Car Race Starter Modifications 1 1 50Car Race Starter Power Saver 1 1 50Chirping Cricket Light Activated Annoyance 11 56 65Dan Dare Super Space Age Torch 10 46 74Dual Wire Transmission System 12 60 30Fuse Failure Indication 1 2 26LED Flasher 11 55 56Live Wire Bargraph 11 51 22Ni-Cd Backed-Up Siren for Car Alarms 11 48 39Novel Sound To Light 1 1 50Pseudo Phaser 1 2 26Retriggerable 555 Timer 11 58 39Simple 1:1 M/S Ratio on 555 Timer 11 50 67

Simple Ni-Cd Charger 2 5 27Simplified Car Lights Reminder 2 5 27Single Rail to Dual Rail for Op-Amps 1 2 26Variable M/S Ratio with Constant Frequency

555 Timer 11 50 67

COMPUTERS IN THE REAL WORLDPart 1 Introduction, Processors, Interfaces

& Buses, Signal Conversion 8 33 60Part 2 Encoders, Transducers for Temperature

Measurement & Control etc. 8 34 58Part 3 Input Sampling, Quantisation,

S&H Circuits, Signal Conditioning etc. 9 35 35Part 4 Software Polling, Interrupts, Masking,

PICs, DMA, Handshaking 9 36 67Part 5 Serial v. Parallel, Baud Rates, Parity,6402UART, 6850ACIA etc. 9 37 34

ELECTRONICS AND BEYOND INDEX VOLUMES 1 to 15 PAGE 2


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Part 2 Signals from the Clarke Belt 12 60 24Part 3 Europe Sans Frontieres, The

Scrambling Phenomenon 12 62 32Part 4 Beyond The Grave 12 63 56Part 5 Beyond The Grave (Continued) 12 64 53Part 6 IRDs (Integrated Receiver-Decoders)

A Change for the Better? 12 68 60Part 7 For The Enthusiast Multi Satellite

Receivers 12 69 32Part 8 For The Enthusiast The Echostar SR-50 * 12 70 28

ELECTRONIC CHRONICLES A Brief History of ElectronicsPart 1 Introduction, Early Beginnings 3 10 9Part 2 The Dawn of a New Era 3 11 55Part 3 Henry, Siemens, Kirchhoff, Lord Kelvin,

Maxwell, Hertz 3 12 16Part 4 Edison, Tesla, Marconi 4 13 36Part 5 The History of Television 4 14 5Part 6 The History of the Digital Computer,

Babbage, Hollerith 4 16 20

ELECTRONICS BY EXPERIMENTPart 1 Introduction, Power Supply for Digital

Circuits, Logic Probe etc. 7 25 52

Part 2 Addition & Subtraction, Decoders,BCD to 7 Segment, 555 Timer 7 26 27Part 3 J -K Flip Flops, Debounce Switch, Counters 7 27 19Part 4 D Type Flip Flops, Shift Registers,

Ring Counters 7 28 47Part 5 Schmitt Triggers, Monostables 8 29 26Part 6 Operational Amplifiers 8 30 21Part 7 Operational Amplifier Applications 8 31 51Part 8 Unijunction Transistors 8 32 10Part 9 Silicon Controlled Rectifiers (SCRs) 8 33 35Part 10 Triac, Diac, SCS, SUS, SBS, & PUT 8 34 51Part 11 Power Supplies, Zener Diodes,

Voltage Multipliers 9 35 65Part 12 Waveform Generator Circuits 9 36 42

ELECTRONIC FILTER CIRCUITSPart 1 Passive, Band Pass & Notch, Twin T 15 105 66Part 2 Resonant L C Filters 15 106 66

ELECTRONICS IN AVIATIONPart 1 The Early Years 11 49 4Part 2 Air Traffic Control 11 50 4Part 3 Communication 11 51 24Part 4 Navigation 11 52 4Part 5 Instrumentation 11 54 4Part 6 The Space Shuttle 11 55 4

EMC - ELECTROMAGNETIC COM PATIBILITYPart 1 Where We Are & How We Arrived There 15 97 46

Part 2 Emissions 15 98 57Part 3 Immunity 15 99 66Part 4 Frequently Asked Questions (FAQs) 15 100 85

EXPLORING RADIOPart 1 Introduction, A Little Theory, The

Crystal Set 7 25 26Part 2 The TRF Receiver 7 26 40Part 3 ZN414 AM Tuner IC MW Receiver 7 27 38Part 4 Expansion of MW Receiver to Cover LW 7 28 38Part 5 SW Receiver 8 29 66Part 6 How to Build an FM Stereo Receiver 8 30 26Part 7 TRF Reflex Receiver 8 31 44Part 8 TRF Marine Band Receiver 8 32 37

FEATURES AstronomyAn Introduction to Radio Astronomy 12 60 56

Collision Earth 14 93 32Discover J upiter and its Satellites 14 84 3Hipparcos Satellite - The Road Map in the Sky 15 97 32Light Pollution 14 85 16

The Hunt for Dark Matter 15 101 8The Infra Red Space Observatory 15 106 30The New Look Planetarium 15 96 4The SOHO Mission - Sun Gazing 15 105 6Window on The Universe 14 86 68

FEATURES AudioCompact Disc Digital Audio 2 5 8Computer Graphic Equaliser with Remote Control 8 31 72Coupled Cavity Speakers Part 1 14 90 55Coupled Cavity Speakers Part 2 14 91 68Coupled Cavity Speakers Part 3 14 92 46Designing Op Amp Circuits 13 83 52How Audio Data Compression Systems Work 14 86 47How Digital Compact Cassette Works 13 72 8Loudspeaker & Amplifier Specifications 7 26 19Maplin Dolby Surround Sound Processor

Guide to Using 9 40 32Microphones * 10 46 37MS Stereo Part 1: The Basic Principles 14 89 58

MS Stereo Part 2: Experiments 14 90 62RIAA CD Versus Vinyl Part 1 14 88 16RIAA CD Versus Vinyl Part 2 14 89 16RIAA CD Versus Vinyl Part 3 14 90 20Saved in the Nick of Time . . . Recovering Rare

Recordings 13 77 12Sound Advice Replacement Loudspeakers 4 13 17Speaker Design - Software Review 15 104 28

Taped Part 1 9 40 24Taped Part 2 10 41 64The Rock Circus 9 35 5The War of the Digital Formats . . . Enter the Sony

MiniDisc 13 73 16Watts in an Amplifier? Part 1 6 21 54

Watts in an Amplifier? Part 2 6 22 14Which Power Amplifier? Integrated Circuit

Power Amplifiers 7 26 48

FEATURES Automotive ElectronicsAn Introduction to Car Electrics Part 1 3 10 20An Introduction to Car Electrics Part 2 3 11 16Autoguide Traffic J am Buster? 9 35 72Dwell Angle Measurements 3 12 62Electronic Ignition Part 1 11 53 44Electronic Ignition Part 2 11 54 43In Car Routefinder Review 15 104 37Microcontrollers in Automotive Applications Part 1 11 48 12Microcontrollers in Automotive Applications Part 2 11 49 18

Traffic Master In Car Navigation System 11 47 4Trafficmaster Traffic Data Network 15 102 24Taking Toll of Traffic J ams Automatic Vehicle

Identification Explained 12 61 4Weigh-in-Motion, Vehicle Weighing on the Move 12 64 4

FEATURES Aviation ElectronicsThe Godfrey Manning Aircraft Museum 13 77 67

FEATURES Circuit DesignDesigning Linear Circuits with Bipolar Transistors 13 82 29Improve Your Circuit Design with the Aid of a

Scientific Calculator 13 82 39

FEATURES Components, Active & PassiveCopper Indium Selenide (CIS) Photocells 11 58 48Diodes 7 27 54

PAGE 3 INDEX VOLUMES 1 to 14 ELECTRONICS AND BEYOND


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LEDs and Their Applications Part 1 14 85 19LEDs and Their Applications Part 2 14 86 14LEDs and Their Applications Part 3 14 87 21Low Distortion Operation of LM358 14 95 34New Standards le Logic 3.3V Logic Arrives 15 102 21Power Management in Semiconductors Part 1 14 86 12Power Management in Semiconductors Part 2 14 87 78Resistors in Series and Parallel 11 47 31Which Bipolar? (Transistors) 6 22 51Which Capacitor? 5 20 17

Which FET? 6 23 26Which NAND Gate? 7 25 36Which Op-Amp? 6 24 52Which Resistor? 6 21 44

FEATURES Computer/MicroprocessorA Boot-up Protection System for the PC 13 77 58A to D to A Conversion Techniques 5 18 56Allophone Speech Synthesis Techniques 2 6 4An Introduction to Programming in BASIC Part 1 * 10 42 58An Introduction to Programming in BASIC Part 2 10 43 42An Introduction to Programming in BASIC Part 3 10 44 42An Introduction to Programmable Logic 14 87 32An Introduction to Single Chip

Microcomputers/Controllers 10 41 17An Overview of Computer Viruses 12 66 16Basically BASIC Part 1 1 1 44Basically BASIC Part 2 1 2 24Basically BASIC Part 3 1 3 48Basically BASIC Part 13 1 4 54Basically BASIC Part 14 2 5 52Basically BASIC Part 15 2 6 58Casio FX-850P Personal Computer 8 33 73Catching A Virus Cold Computer Viruses 8 33 40CD-ROM A Match Made in (Silicon) Heaven 11 57 13Citizen LCM64 Compact Liquid Crystal DisplayMonitor Review 12 66 45

Colour Printing (Computer Printer Guide) 14 91 16

Computer Aided Design & The Personal Computer 11 51 4Computer Modelling With A Difference 13 72 24Computers Can Be A Right Pain Repetitive

Strain Injury 12 60 51Computing without Clocks 15 103 16Content Based Indexing for Multimedia 15 99 12Coprocessors 12 60 12Database Management Part 1 3 9 51Database Management Part 2 3 10 55Flash EPROMs (Explained) 14 92 61Frame Relay Put Plainly 12 65 28Galleon MSF Computer Clock 15 106 56Getting a Better Image Image Processing 11 47 16Getting A J ob in Computers 9 35 2Guarding Against Disk Failure 12 69 60High Bandwidth Memory 15 101 13IBM PC based Electronic Principles Educational

Software 13 73 4Inter-Networking 11 58 76Interfacing Microprocessors Using Parallel I/O Ports 2 5 54Interfacing the BBC Micro 2 8 20Introduction to Neural Networks 12 68 4Low Energy Personal Computers 14 92 8Machine Code Programming with the 6502 Part 1 2 7 6Machine Code Programming with the 6502 Part 2 2 8 51Machine Code Programming with the 6502 Part 3 3 9 39Machine Code Programming with the 6502 Part 4 3 10 26Machine Code Programming with the 6502 Part 5 3 11 48Machine Code Programming with the 6502 Part 6 3 12 25Machine Code Programming with the 6502 Part 7 4 14 13

Machine Code Programming with the 6502 Part 8 4 15 22Machine Code Programming with the Z80 Part 1 5 17 57Machine Code Programming with the Z80 Part 2 5 18 44Machine Code Programming with the Z80 Part 3 5 19 44Machine Code Programming with the Z80 Part 4 5 20 59Machine Code Programming with the Z80 Part 5 6 21 16Machine Code Programming with the Z80 Part 6 6 22 43Machine Code Programming with the Z80 Part 7 6 23 43Machine Code Programming with the Z80 Part 8 6 24 23Magnetic Disks & New Applications 14 95 62

Networking Intelligence A Protocol for ControlApplications 13 76 54

Network Management 12 62 44Now Hear This Getting the Voice

Processing Message 11 55 20Optical Computing 15 96 32Optical Disks 15 104 16PCMCIA (PC Memory Cards) 14 94 63Personal Communications Network

Implementation in the UK 11 50 40Pictures by Numbers:MPEG Video Compression 14 84 31Raising the CLANS (Cableless Local Area Networks) 11 49 73Road Testing The Sord M5 Microcomputer 2 6 11RS232 Explained . 14 95 67Serial Packet Controllers 12 63 52Sitting in Your Lap or Palm, or on your Desk? 11 55 16

The 486/386 Debate 11 50 52The EPP-1 EPROM Programmer 8 30 32The Leading LAN Operating Systems in Europe 12 64 45The Quiet Revolution PCs The Next Ten Years 13 79 28The VIC 20 Colour Computer 1 3 13TMS320C26 DSP Starter Kit 14 87 16TMS77C82 Microcontroller Part 1 9 39 56TMS77C82 Microcontroller Part 2 9 40 16Touch Screen Technology 12 60 68Transferring BBC Text Files to PC MS-DOS 11 57 4Transputers The Component Computer 6 21 2

Social Computing 15 98 9What Are PIC Chips? 13 72 63What on Earth is Fuzzy Logic? 14 86 65When Disaster Strikes! (Computer Security) 10 44 16When The Computer Chips Are Down

Help Is At Hand 12 62 56Workgroup Networking 13 80 36

FEATURES Computer NetworkingA Technical Look at Network Management 15 96 58All About Internet 13 83 4Client Server 15 103 14IEEE-488 Explained 14 93 59Network Computers - The Set-Top Box 15 106 72Quo Vadis? Future of Computers 13 83 16Satellite Based Networking (VSAT) 14 84 65Secure Information Electronic Data 14 93 20

FEATURES ControlDriving for Control - Electric Motor Drives 15 103 50Improved Timer Control (555/7555 Timer ICs) 2 5 7Keeping in Step - Stepper Motors 14 95 14Lamp/LED Brightness Control Circuits 15 104 58Mains Power Control with Triacs 5 20 24Remotely Operated Vehicles (ROVs) 13 75 16

Tram Technology on the Move 13 81 24

FEATURES Fibre Optic & LaserAn Uncertain Future for FDDI-II (Optical Fibre

Networks) 13 76 33Fibre Optic Technology 12 62 67Holography Theory & Practice 15 102 4



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Lasers & Fibre Optics 4 13 6Optical Computing 15 96 32Optical Materials 15 99 24

The Use of Lasers in Ophthalmology 15 101 24Whats in a Laser? 12 63 16

FEATURES GeneralA Brief History of Electronics -The Maplin Magazine 15 100 3

A Century of Magnetic Materials 15 106 44

Access Control - Biometrics 15 97 22Aerogels 15 103 4Apple Expo 95 Review 15 98 67New Landmark for the Thames

(Thurrock-Dartford Bridge) 11 49 16Across The Board A Look at PCB Manufacturing 11 59 16Barred for Life Bar Codes & Electronic

Point of Sale 9 37 51Bringing the Waxworks to Life At Madame Tussauds 12 66 4Broadband ISDN 11 57 27Building Gets Smart Office Comms Cabling 9 37 72Club Med Gets Smart 8 29 64CNN (Cable News Network) InternationalTells it to the World 11 50 64

Cold Fusion Fact or Fantasy? 13 80 3Connections Made Easy (IDC Connectors

& Ribbon Cable) 3 12 63Countdown to 1992 European Single Market 9 36 24Earth Resources Satellites 15 100 12Educational Solar Energy Kits 12 68 69Electronic Home Monitoring of Offenders 9 36 6Electronic Point of Sale High Tech in the

High Street 10 42 37Eurostar (Eurotunnel Express) 14 94 32Exploring Venus The Magellan Mission 12 70 16Extra Terrestrial Life The Search Goes On! 13 81 4Face to Face An Interview with R. A. Penfold 10 46 40Facsimile Developments 11 56 24

Fast Food Counter Microwave Facts * 10 45 55Fast Forward to The Future 12 60 32Ferrofluids 9 35 16Fit for Electronics 11 53 40Flexible Business Revolutions Ahead 15 102 54Food Drink and EPOS (Electronic Point of Sale) 11 50 56Frame Relay Networks 11 59 36Fundamentals Basic Principles of Electricity * 10 42 28Genius or Magician? Arthur C Clarke 15 101 72Global Climatic Changes 12 69 17Harnessing Wind Power Wind Turbines 12 63 4Here Now in Dolby Stereo Cinema Sound 9 37 40Hi-Tech Kicks Off Euro 96 15 103 22History of Defibrillation 14 91 32Hobbyist in Action Ian Connolly 9 36 64Hobbyist in Action Philip Walker 8 30 72Hobbyists in Action Model Railway Layouts 8 32 72Holography 9 36 8How To Solder 1 1 52Hubble Back on Track The Hubble Space Telescope 13 82 4Imaging in Nuclear Medicine 12 67 16Introducing Velleman 11 50 24Its About Time! Chronology of The Modern Timepiece 1596 24Knowledge Based Systems, Neural Networks

& Expert Systems 11 51 28Life Beneath The Ocean 14 87 64Live 95 - The Consumer Electronics Show 15 96 38Londons Trocadero - The High Tech Experience 15 105 20Make It With Maplin Part 1 4 14 26Make It With Maplin Part 2 4 15 58

Make It With Maplin Part 3 4 16 58Make It With Maplin Part 4 5 17 48Making Your Own PCBs 1 3 46Making Your Own PCBs Using CAD 14 90 7Maplin Comes To Nottingham 8 31 24Maplin Comes To Leeds 8 33 2Maplin in Bristol 8 29 36Mysterious Mars The Dreamers Planet 13 73 48New Maplin Shop in London 8 34 56Outsourcing and Facilities Management 13 78 41PCB Etching Kits 15 106 42Piezo Technology How to use Piezo Electric Film 12 61 36Projecting Ahead The Life Story of a Maplin Project 11 58 32PUFFIN Pedestrian User Friendly Intelligent Crossing? 13 79 12Refrigeration The Production of Cold 5 19 16Rewiring Your House Part 1 2 8 6Rewiring Your House Part 2 3 9 28Say It With Satellites Part 1 1 4 22Say It With Satellites Part 2 2 5 48Say It With Satellites Part 3 2 6 54Say It With Satellites Part 4 2 7 54Say It With Satellites Part 5 2 8 40Scouts Show Off Their Electronic Skills 8 29 54Searching for Creation The European CERN Facility 13 74 12Space Propulsion Present & Future 14 95 8Starting Point Part 1 Transistor Amplifying Modes 1 1 10Starting Point Part 2 Transistor

Amplifying Modes cont. 1 2 20Starting Point Part 3 Classes of Amplification 1 3 50Starting Point Part 4 Inductance 1 4 48Starting Point Part 5 UJ Ts, FETs & SCRs 2 5 24Static Electricity Friend and Foe 12 62 28

Taken for Granted House Wiring &Electrical Safety 4 13 50

The BT Global Challenge Yacht Race 15 104 48The Changing Face of Maplin New Maplin

Distribution Centre 9 36 4

The First Picture Show A History of FacsimileTransmission 12 61 44The History of Maplin 15 106 37The Identity of the Electron 15 105 38The Lament of the Engineers Wife Part 1 8 34 22The Lament of the Engineers Wife Part 2 9 35 21The National Lottery (Explained) 14 90 3The Revolution in Microscopy 15 98 19The Rutherford Appleton Laboratory 15 104 4The Search for Superconductivity 13 76 4The Zeeman Effect - The Missing link 15 105 30Thermal Protection Too Hot to Handle! 13 80 16Tunnel Vision (About Eurotunnel) 14 93 24UV Radiation (About UV Light) 14 92 22

Virtual Reality 11 52 40Visions of the Future - The Millennium and Beyond 15 101 22What Do You Know About Your Microwave Oven? 11 53 77What Is Pulse Code Modulation? 5 17 2When Lightning Strikes! 15 97 16Wires & Wherefores Cables & Wires Discussed 2 5 42

Yesterdays Electricity (The Pioneers) 14 92 62

FEATURES Logic CircuitsBoolean Algebra Part 1 Intro, The TruthTable, De Morgans Laws 11 49 36

Boolean Algebra Part 2 The Karnaugh Map 11 50 44Boolean Algebra Part 3 Design of Logic Circuits 11 51 42

FEATURES Model ControlGetting Into Radio Control Model Car Racing 9 37 5Radio Controlled Model Cars Introducing



7/18


The Basics 11 56 58Radio Controlled Model Cars AdvancedTechniques 12 61 73

FEATURES MusicalDigital Signal Processing Kit Review 14 87 16MIDI Interfacing Techniques 6 22 2

FEATURES Power Supplies & BatteriesBattery Technology 15 99 49

Circuit Breakers 14 94 18Domestic Power Supply Problems Spikes,Noise & Glitches 12 67 36

Fuses (Choosing) 14 91 58Lead Acid Battery Charger (4V, 6V & 12V) 5 18 48Mains Safety in Hobby Projects 13 83 32Mains Transformers Part 1 From Theory

to Practice 12 64 48Mains Transformers Part 2 Pulling It

All Together 12 65 4Not Flat J ust Run Down Rechargeable Batteries 7 28 44Positive Thinking - Negative Voltages

from Battery Supplies 15 101 35Recycling Batteries 14 93 3

The Basic Principles of AC Power Supply 5 19 54The Sealed Nickel Cadmium Battery 1 4 24The Shocking Truth (About Electric Shock) 14 87 4

FEATURES Radio CommunicationsA Listeners Guide to Radio Propagation

Part 1 The Story Below 30MHz 12 64 18A Listeners Guide to Radio Propagation

Part 2 The Story Above 30MHz 12 65 38Amateur Radio on the HF Bands 13 75 33Amateur Radio on VHF and UHF 12 63 42Broadcasting To The World The BBC

World Service 12 71 12Demodulating FM Radio Signals The Amplitude

Locked Loop 13 74 16Frame and Ferrite Rod Antennas 11 47 19Global Positioning System Software 15 105 16Hospital Radio The Patient Voice 13 72 52How a Superhet Radio Works 11 59 60How To Repair Radios Part 1 14 84 43How To Repair Radios Part 2 14 85 72H/VHF Aerial Analyser Review 15 104 33Loudspeaker Radio Receiver Project Review 10 43 69Pagers - Getting The Message Across 15 98 12Paging on The Move Radio Paging 12 64 76Radio Data System (RDS) Update 12 62 60Radio with Brains Radio Data System (RDS) 7 26 57Receiving Weather Satellite Images 14 85 25Satellite Sound Broadcasting White

Elephant in Orbit 9 38 41Setting Up a Radio Shack 14 91 64Short Wave Broadcasting Today 12 65 32

The Amateur Radio Novice Licence &How to Obtain It 12 66 61

The Birth of the Antenna 15 105 42The Future of GPS 15 106 6What are Scanners? 13 76 24What are Phase Locked Loops? 15 98 62Whatever Happened to CB (Citizens Band) Radio? 12 68 20What is Paknet? 13 78 9

FEATURES RoboticsPractical Robotics Techniques Part 1 10 42 16

Practical Robotics Techniques Part 2 * 10 43 56Practical Robotics Techniques Part 3 10 44 18Practical Robot Techniques A PC Update 11 59 25

FEATURES Security/ProtectionDomineye - The TV Watchdog ISecurity Camera) 15 106 48Making The Most of The Maplin Security System 11 59 48Security on the Move The Incident

Command Vehicle 12 66 32Stop Thief! Versatile Multi-Purpose Intruder Alarm 13 82 74Vixen Car Alarms (Fox Security) 15 106 54

FEATURES TelecommunicationsAdding Value To Your Telephone 8 31 48

All About Maplin Key Call 14 84 40All About Your Telephone 3 12 54An Uncertain Future for FDDI-II (Optical Fibre

Networks) 13 76 33Circuit Mode Switching 13 82 69Corporate FAX Market Trends 13 75 30Digital Switched Networks and the Consumer 13 82 73Getting the Low-down on the BT Tower 14 95 74Omnicom FS1515 Telephone Exchange 11 57 16Sailing Ship to Satellite Part 1 14 90 44Sailing Ship to Satellite Part 2 14 91 40

Tackling Nuisance or Obscene Telephone Calls 10 46 64Telecommuting Going To Work At Home 8 32 8The Cordless Phone Box Arrives 8 30 24What Is System X Anyway? Part 1 The

New Digital Network 9 40 49What Is System X Anyway? Part 2 The

Digital Exchange 10 41 72

FEATURES Test & Me asurement20 & 40MHz Topward Oscilloscopes Review 8 32 2A Practical Guide to Impedance Matching &

Mismatching 12 71 37An Instrument for All Seasons Philips

Scopemeter Review 12 62 4Attenuators Theory & Design 10 42 42Beginners Guide To Circuit Testing Part 1 10 45 35Beginners Guide To Circuit Testing Part 2 10 46 53FLUKE Series 10 Digital Multimeters Review &

Typical Applications 12 61 32Frequency Measurement in the Home Laboratory 8 33 16K7100 Digital Multimeter Kit Review 15 97 64Measurements in Electronics Part 1 3 9 16Measurements in Electronics Part 2 3 10 15Measurements in Electronics Part 3 3 11 7Measurements in Electronics Part 4 3 12 58Measurements in Electronics Part 5 4 13 39Measurements in Electronics Part 6 4 15 37Multimeters 4 16 10

Test Gear & Measurements Part 1 5 19 58Test Gear & Measurements Part 2 5 20 50Test Gear & Measurements Part 3 6 21 20Test Gear & Measurements Part 4 * 6 22 9

Test Gear & Measurements Part 5 6 23 16Test Gear & Measurements Part 6 6 24 17Test Gear & Measurements Part 7 7 25 11Trouble Shooting Digital Circuits with Logic

Pulser, Probe & Clip 12 66 56Using The Signature Analyser Flight Electronics

20MHz Analyser 12 69 4Within Your Scope 2 6 42

FEATURES - The InternetInternet Search Engines 15 104 72Netscape Navigator 3.0 Browser 15 105 72Pop in for a Byte - The Internet Cafe 15 100 33

The New Cyber Provider - AOL 15 101 4

FEATURES Video & TVDatavideo VP-275 Video Effects Processor Review 15 105 52



8/18


Digital VHS Explained 15 97 50Digital Video Technology 15 101 48From Up Above or Down Below Satellite or Cable? 11 58 8Getting HDTV into Perspective The Next Phase 12 62 16Granada Future Television 15 106 16HDTV Pictures Still Out of Focus 10 43 72Making the Right Connections in Video

(Video Connectors) 13 79 59New French Revolution Gathers Pace Minitel

Videotex 8 34 48

NICAM 728 British Digital Stereo Sound forTelevision 6 23 2

NICAM 728 Part 1 Digital Stereo Sound Comesto Television 8 34 8

NICAM 728 Part 2 NICAM DecoderConstruction & Use 8 35 8

Pictures by Numbers MPEG Video Compression 14 84 31Pictures of Confusion TV Picture Conversion

Between Standards 13 80 54Putting You in Control of Your CD Player 14 91 3SKY Flies High 9 39 32

The Care & Feeding of Video Modulators 5 18 10The Digits are Coming Digital Techniques in

TV Receivers 4 15 8The Video Revolution 7 27 42UK IBA NICAM Coverage 10 41 55Videoconferencing Getting into the Picture 11 50 73Video Networking and Smart Hubs 13 79 15Videotex Teletext & Viewdata 1 1 54Video Termination When, Where & Why 14 86 28

FILTERS How and Why?Part 1 Why and How? 13 82 44Part 2 High-Pass and More Theory 13 83 68Part 3 Band-Pass and Band-Stop 14 84 69Part 4 Band-Pass and Notch, Tuned Circuits 14 85 40Part 5 High Performance Active Filters 14 86 55

Part 6 All Pass Filters and Networks 14 87 50Part 7 Computers in Filter Design 14 88 58

FINISHING OFFPart 1 Drilling Holes 11 53 8Part 2 Building The Kits 11 54 24Part 3 Selecting Design & Layout of Controls 11 55 64Part 4 Spraying, Covering & Labelling 11 56 40

FIRST BASE A Beginners Guide to Logic DesignPart 1 Introduction, Logic Power Supplies * 2 6 20Part 2 Schottky Devices, Logic Levels, Truth Tables 2 7 48Part 3 ALUs, Half Adders, Full Adders * 2 8 46Part 4 Hexadecimal Numbers, Clocks 3 9 9

Part 5 Loose Ends, Open Collector Outputs,Counters & Displays 3 10 60

Part 6 More Chips, Memory, Static RAM,Sequential Addressing 3 11 41

Part 7 CMOS Devices, Logic Gates, Counters 3 12 41Part 8 Crystals, Crystal Clocks 4 14 39Part 9 Multiplexers, Microprocessor Buses 4 16 42Part 10 Microprocessor Based Systems 5 18 40

GETTING TO KNOW TEST EQUIPM ENTPart 1 Identifying the Needs and Applications 13 80 32Part 2 Analogue Test Equipment * 13 81 39Part 3 Oscilloscopes 13 82 58Part 4 Digital Meters 13 83 63Part 5 Counters and Signal Sources 14 84 51Part 6 Automatic Test Equipment (ATE) 14 85 56

GUIDE TO MODERN DIGITAL ICsPart 1 Basics 14 93 27Part 2 TTL and CMOS Families 14 94 49Part 3 TTL Basic Usage Rules etc 14 95 58Part 4 - CMOS Basics,Power Supplies etc 15 96 50Part 5 CMOS 4007UB Basics 15 97 58Part 6 - Practical Buffers,lnverters & Logic Gate ICs 15 98 46Part 7 - Waveform Generator Basics * 15 99 42Part 8 - Clocked Flip-Flop Basics 15 100 58Part 9 - Down & Up/Down Counters 15 101 58

Part 10 - Latches, Registers & Comparators 15 102 66Part 1 1 - Multiplexers, Decoders etc. 15 103 66

HEARING DEAFNESS & ELECTRONIC TECHNOLOGYPart 1 The Hearing Process 10 42 24Part 2 Cochlear Implants 10 43 16Part 3 Overcoming Barriers 10 44 4Part 4 Sound Advantage 10 46 72

HELLO WHOS CALLING? - History of TelephonesPart 1 Invention, Early Systems, Post

Office Intervention 7 27 10Part 2 Central Battery System, Development

of Candlestick Telephone 7 28 52Part 3 Hand Combination Set, Initial Development,

ASTIC System 8 29 3Part 4 The First One Piece Telephone, No. 330 8 30 35Part 5 Postwar, The 700 Type Telephone 8 31 26Part 6 Loudspeaking Telephones 8 32 64Part 7 Modern Telephones 8 34 32

HISTORY OF ELECTRONICSPart 1 The Foundations Laid 14 86 52Part 2 The First Uses of Electricity 14 87 43Part 3 The Thermionic Age Arrives 14 88 3Part 4 The Transistor is Discovered 14 89 3Part 5 Miniaturisation and ICs 14 90 32

HOW TO USE DIGITAL PANEL METERSPart 1 Digital Panel Meter Basics, Basic DPM

Configurations 13 76 37Part 2 Maplin LCD DPM Application Details 13 77 41Part 3 Voltage, Current and Resistance Meter

Circuits 13 78 59Part 4 Capacitance and Frequency Meter Circuits 13 79 64

INDUSTRIAL ELECTRONICS ASSEMBLY A World Apart?Part 1 PCBs, PCB Classifications etc. 12 65 16Part 2 Surface Mounted Components &

Soldering Processes 12 66 48

INTEGRATED CIRCUITS555/7555 Timer 2 5 7555 Timer 12 61 51555 Timer 12 69 406502A 8 Bit Microprocessor (Pinouts) 11 48 726522 VIA (Versatile Interface Adaptor) 3 12 256821 Programmable Interface Adaptor 2 5 56741 Operational Amplifier 12 68 288255A Programmable Peripheral Interface 10 43 24AY-3-1350 ROM Music Synthesiser 4 13 22E100SV1 Infra-Red Detector 11 54 48E510 MIDI Keyboard Scanner 12 69 24HT1030 3V Regulator 14 95 5HT281 1 Doorbell Sound Generator 14 95 5

HT2811 Doorbell IC 14 91 11HT2860 Siren Sound Generator 14 90 28HT82207 Wild West Sound Generator 14 92 4



9/18


HT82231 Animal Sound Generator 14 93 16HT8950 Voice Modulator 15 96 10HT8955A Voice Echo IC 14 89 50ICL8038 Waveform Generator 11 58 70ICL8038CCPD Waveform Generator 11 48 24ICL8211CPA Precision Voltage Detector 13 76 13ICM7216A Counter Timer 10 45 48ICM7224IPL LCD 41/2Digit Counter/Driver 11 55 40ISD1016A Voice Record/Playback IC 14 85 33ISD1016AG Voice Record/Playback IC 14 87 10

ISD1016AP Voice Record/Playback IC 14 91 11L200 Adjustable Voltage/Current Regulator 10 46 48L9801 High Side Driver 11 54 32LM1037 Dual Four Channel Analogue Switch 8 34 28LM1310P Stereo Decoder 8 30 28LM13700 Dual Transconductance Operational Amplifier 8 31 32LM13700N Dual Transconductance Operational Amplifier 11 54 16LM1830 Fluid Detector 3 11 51LM1871 6 Channel Transmitter 4 13 43LM1872 6 Channel Receiver 4 13 43LM1875 20W Audio Power Amplifier 8 30 16LM1875N 25W Audio Power Amplifier 13 82 67LM1881N Sync Separator 11 51 64LM1894 DNR (Dynamic Noise Reduction) Processor 9 40 56LM2879 Dual 9W Audio Power Amplifier 13 82 64LM331 V to F / F to V Converter 11 57 8LM334Z Constant Current Source 13 76 13LM339 Quad Operational Amplifier 12 61 57LM3240uad Op Amp 14 95 34LM358 Dual Op Amp 14 95 34LM377 Dual 2W Audio Amplifier 7 26 48LM380 3W/4 Audio Amplifier 7 26 48LM381/LM382/LM387 Integrated Circuits 13 74 28LM383(TDA2003) 8W Audio Power Amplifier 13 82 64LM386 Low Voltage Power Amplifier 8 29 32LM387/TDA3410/MC3340P/NE570/571

Integrated Circuits 13 75 20LM389 Audio Preamplifier/Power Amplifier 4 16 24MAX293/297 Elliptic Filter 13 80 59MF10 Universal Switched Capacitor Filter 9 38 24MN3011 Bucket Brigade Delay Line 11 49 48MSM6322 Speech Pitch Controller 10 44 56NE5534A Low Noise Op-Amp 12 64 36NE571 Compander 9 40 72OP470 Quad Operational Amplifier 11 49 28PIC16C54RC 8 Bit CMOS Microcontroller 11 49 33PIC16C54RC 8-Bit CMOS Microcontroller

(RM9011 Module) 13 73 64PIC16C71 Microcontroller 14 88 10PIC16C84 Microcontroller 14 89 35RC4195N Dual Polarity Tracking Regulator 15 105 14SAA1027 Stepper Motor Driver 5 18 35SAA1027 Stepper Motor Driver 14 95 17SAA1099 Sound Generator 11 58 24SAB0600 Tone Generator 11 58 4SL560C Low Noise RF Amplifier 13 74 20SL560C Low Noise RF Amplifier 13 80 9SL561C Low Noise Preamplifier 13 76 28SL6270C VOGAD Preamplifier 11 55 8SL6270CDP VOGAD Preamplifier 15 96 19SPO256 Speech Synthesiser 9 36 48SSM2015 Microphone Preamplifier 9 39 40SSM2016 Low Noise Differential Audio Preamplifier 10 41 4SSM2017 Microphone Preamplifier 12 69 8SSM2044 4-Pole Voltage Controlled Filter 10 42 64

SSM2045 Music Voicing System 10 43 4SSM2120 Dynamic Range Processor 11 47 32SSM2120 Dynamic Range Processor IC 15 103 34

SSM2142 Balanced Line Driver 11 49 24SSM2142 Balanced Line Driver 12 64 36

TEA2000 Colour Encoder & Summer 15 96 19TA8662N Quadrant Phase Shift Keying Modulator 9 35 10TBA2800 Infra-Red Receiver 10 41 28TBA810S/P 6W Audio Power Amplifier 13 82 63TBA820M 500mW Amplifier 12 64 8TBA820M Audio Amplifier 7 27 2TBA820M Audio Amplifier 14 86 5TCA6011N Pulse Code Modulation Detector 9 35 10

TD6710AN 14 Bit D to A with Dual ChannelAudio Outputs 9 35 9

TDA1010 6W Car Radio Amplifier 7 26 48TDA1074A Dual Stereo Electronic Potentiometer 12 61 57TDA1514A 50W IC Power Amplifier 9 40 64TDA1514A Audio Power Amplifier 14 87 74TDA1514A-N7 40W Audio Power Amplifier 13 82 68TDA1520 22W Audio Power Amplifier 13 82 67TDA1520 11W/8 Audio Amplifier 7 26 48TDA2004 Dual 9W Audio Power Amplifier 13 82 64TDA2005M 20W Bridge Mode Audio Power Amplifier 13 82 67TDA2006V 12W Audio Power Amplifier 13 82 66TDA2030 10W Audio Amplifier 4 15 47

TDA2030 15W Power Amplifier 10 41 46TDA2030 15W Power Amplifier 12 64 24TDA2030AV 18W Audio Power Amplifier 13 82 66TDA2050V 32W Audio Power Amplifier 13 82 68TDA2822 0.6W Stereo Amplifier 11 58 28TDA2822 1W Stereo Amplifier 8 30 28TDA2822 1W Stereo Amplifier 9 38 6TDA3048 Infra-Red Receiver 9 35 32TDA7000 FM Radio Integrated Circuit 3 9 42TDA7000 FM Radio Integrated Circuit 7 27 2TDA7052 1.2W Bridge Amplifier 12 65 24TDA7052 1W Power Amplifier 9 37 76TDA7052 Headphone Power Amplifier 11 55 8TEA2000 Colour Encoder 8 29 48

TLC548I 8 Bit Analogue to Digital Converter 13 75 24TMS1601ANLL Masked Programmable

Microcontroller 10 44 8TMS77C82 Microcontroller 9 40 9U2400B Ni-Cad Charger Controller 15 100 25U6047B Long Duration Timer 14 95 49UA3730 Electronic Code Lock 11 56 66ULN2455A Lamp Failure Monitor 13 80 25ULN3390T Twilight Switch 13 73 8UM34811A Multi Tune Generator 7 26 35UM3511A Melody Generator 11 56 16UM3561 Siren Sound Generator 7 26 44UM3750 Encoder/Decoder 9 36 57

UM3763 Voice Control (Whistle) IC 9 38 8UM5100 Voice Processor 8 30 48UM66 Melody Generator 12 60 4XR-2206 Waveform Generator 11 58 72XR-2211 Phase Locked Loop Tone Decoder 8 32 17XR-2211 Phase Locked Loop Tone Decoder 11 53 72Z80A 8 Bit Microprocessor (Pinouts) 11 48 72ZN419/409 Precision Servo Driver 10 45 24ZN425E D to A / A to D Converter 9 35 39ZN449 Successive Approximation D to A Converter 12 61 66ZNA234E Video Pattern Generator 9 37 11

INTRODUCTION TO DIGITAL SIGNAL PROCESSINGPart 1 Introduction and Simple Filters 13 83 37

Part 2 Digital Filters 14 84 62Part 3 DSP Workbench Design Program 14 85 45Part 4 Pole-Zero Diagram Filter Design 14 86 33



10/18


LED MOVING MESSAGE DISPLAYPart 1 System Overview & Moving Message

Display Module 12 62 8Part 2 Testing the Display Module, Controller

Module Construction 12 63 8Part 3 The Expandable Power Supply 12 64 40Part 4 Software Development 12 65 57

LOUDSPEAKERS The First 111 YearsPart 1 The Early Years 7 28 18Part 2 War and the First Wave of High Fidelity 8 29 57

Part 3 Late 50s Stereo to Swinging 60s Stereo 8 30 4Part 4 The Frantic 70s 8 31 2Part 5 The Uncertain 80s 8 32 58

MAINS OPERATED LINEAR DC POWER SUPPLIESPart 1 The Basics 11 48 44Part 2 The Rest of The Basics 11 49 69Part 3 Computer Aided Design 11 50 60

MEASURING DISTORTION IN THE HOME WORKSHOPPart 1 What is Distortion? 8 34 16Part 2 Some New Concepts 9 35 49Part 3 Equipment for Practical Measurements 9 36 72Part 4 Selective Measurements 9 37 25

MICROCOMPUTER TESTING & FAULT FINDING

Part 1 An Introduction to Microcomputer Hardware 11 48 70Part 2 I/O Devices 11 49 59Part 3 Floppy & Hard Disk Drives 11 50 26Part 4 Test Equipment 11 51 52Part 5 Software 11 52 51

MINI CIRCUITSCMOS 4001/4011 Chip Tester 13 81 71CMOS 4017 Chip Tester 13 81 72CMOS Heads or Tails Indicator 13 81 72Go/No Go Thyristor Tester 13 81 74LM3909 Signal Injector 13 81 73Soil Moisture Tester 13 81 73

MODERN BRIDGE CIRCUITS

Part 1 The Wheatstone Bridge 11 52 44Part 2 Precision LCR 11 53 67Part 3 Specials 11 54 62

MODULAR MIXING SYSTEM (Velleman)Part 1 Stereo VU Meter 11 59 32Part 2 Dual Stereo Tone Control Module 12 60 16Part 3 Dual Stereo Fader Module 12 61 56Part 4 Monitor & Effects Module 12 62 48Part 5 Dual Input Amplifier Module 12 63 48Part 6 Master & Headphone Module 12 64 65Part 7 Unregulated Power Supply Module 12 65 53Part 8 Bringing It All Together, 6 and 12

Channel Mixers 12 66 72

NOISE What is it and Why?

Part 1 History and Basics 14 91 36Part 2 Semiconductors and Valves 14 92 35Part 3 Noise in Circuits 14 93 53Part 4 Noise Measurement 14 94 35

OUT & ABOUTAnd The Walls Came Tumbling Down 9 40 40Behind The Auto-Cue TV News 12 63 76BTs Best Kept Secret The BT Museum 11 51 40Cellular Radio Networks Cellnet Drives HomeThe Quality Message 12 62 40

Channel Wars Break Out! 10 41 40Curtain Up On High Tech Miss Saigon 9 38 32Fasten Your Seat Belts Virgin Atlantic 11 59 40Hands-On High Tech in London Science Museum 11 47 40

High Tech Comes to Coronation Street 9 37 2Mastering Sound Hits! The Hit FactoryRecording Studio 11 56 52

MOMI Museum Of The Moving Image 12 60 40Moving with the Times London Transport Museum11 48 40Oh-Not Such a Lovely War Imperial War Museum 10 42 40

Take Off at the RAF Museum Hendon 11 57 68Taken for a Ride at Alton Towers 11 55 32The London Dungeon 10 44 32The London Hippodrome Maplin goes Bopping 9 36 40The London Planetarium 10 43 40The New High Tech Knights of the Road The RAC 12 69 48The Spitting Image Rubberworks 10 45 32

Tuning into Capital (Capital Radio) 11 49 40

PASSIVE ELECTRICAL COMPONENT GUIDEPart 1 Resistors 12 62 51Part 2 Capacitors 12 63 69Part 3 Inductors, Transformers, Switches 12 64 57

POWER ELECTRONICS IN THEORY & PRACTICEPart 1 The Diode, The SCR, The TRIAC etc. 12 71 56Part 2 Rectifiers, Regulators & Transformers

(Power Supplies) 13 72 39Part 3 The Silicon Controlled Rectifier (SCR) 13 73 35Part 4 Trigger Pulse Generators, Unijunction Transistor13 74 62Part 5 Basic PUT Oscillator, UJT Circuits 13 75 52Part 6 Regulated Battery Charger, LV DC Flasher etc.13 76 68

Part 7 SCR Ring Counters, Bridge TypeTemperature Controller etc. 13 77 16Part 8 The Triac, Phase Control, Zero Voltage

Switching etc. 13 78 73

PREDICTING WAVESHAPES USING A COMPUTERPart 1 The Resistor Capacitor Circuit 10 45 4Part 2 The Capacitor Resistor Circuit 10 46 29Part 3 The Resistor Inductor Circuit 11 47 52Part 4 Transformer Mutual Induction 11 48 52Part 5 The Resistor Inductor Capacitor Circuit 11 49 45Part 6 The Inductor Resistor Capacitor Series Circuit11 50 36Part 7 The Rectifier Circuit 11 51 61

PROJECTS Audio

10 Band Graphic Equaliser (Velleman) 12 71 611kW High Power MOSFET Amplifier Part 1 * 7 26 21kW High Power MOSFET Amplifier Part 2 8 29 81kW High Power MOSFET Amplifier Update

(Instability Mains Hum) 10 41 6915W Power Amplifier Module 12 64 2425W Stereo MOSFET Hi-Fi Amplifier * 1 3 3850W Hi-Fi Power Amplifier 12 67 4075W MOSFET Amplifier Bridging Module * 2 6 22100W Mono/Stereo Amplifier 14 87 72100W Pro-Amp Professional Amplifier 11 56 32120W Combo Amplifier * 1 1 2300W Mono MOSFET Power Amplifier 12 70 48300W Stereo / 600W Mono MOSFET Amplifier 12 71 52400W Mono/Stereo Amplifier 13 83 752 Way 16 Litre Loudspeaker System 7 28 563 Channel Sound to Light Unit 15 105 483 Way Loudspeaker System (20 Litre) 7 27 134 Way Speaker Switch 8 30 5716 Way Audio Patchbay 11 52 87 LED Audio Power Meter (Velleman) 12 69 57A Simple Sweep Oscillator 2 7 8Active Cross-Over With Three Channel Amplifier 4 15 47Active Transformer DI Box 15 106 50ADA-Echo Digital Echo Unit 5 19 36ADA-Echo Digital Echo Unit Update 9 37 30Amplifier Monitor Loudspeaker Protection * 11 47 24Animal Sounds Generator 14 93 16Audio & Video Modulator 8 30 65

Audio Balanced Line Transmitter 11 49 24Audio Controlled Switch 9 38 8Audio Frequency Peak to Peak Millivoltmeter 12 67 57



11/18


Audio Frequency Sine/Square Wave Generator 12 63 24Audio Spectrum Analyser (Velleman) 12 70 32Auto-Waa Effects Unit 3 10 52Car Audio Switching Power Supply Unit 10 46 16Digital Playback Module 8 31 64Digital Record & Playback Module 8 30 48Digital Record & Playback Module Corrigenda 8 31 67Dual Input Amplifier Module Velleman Modular

Mixing System 12 63 48Dual Stereo Fader Module Velleman Modular

Mixing System 12 61 56Dual Stereo Tone Control Module Velleman

Modular Mixing System 12 60 16Dynamic Noise Gate 9 40 72Dynamic Range Processor 15 103 32Earth Lift Box 15 102 15Electromuse (Piezo Electric Tweeters) 11 49 78Electronic Record and Playback Module 14 85 32Envirosynth Versatile Noise Generator 11 54 16Fibre Optic Audio Link 5 20 37Graphic Equaliser Final Assembly Modules &

Enclosure (Velleman) 13 74 68Hi-Fi Loudspeakers & Enclosures 6 22 19High Power Speaker Cabinet * 8 33 48

High Quality Power Supply * 10 42 32Interfacing Computers to Consumer Electronics 13 73 64K4000 Stereo Valve Amplifier Part 1 The

Review (Velleman) * 11 51 8K4000 Stereo Valve Amplifier Part 2 Assembly

& Testing * 11 52 56K4100 Digital Controlled Preamplifier (Velleman) 11 52 24LED Power Meter 13 72 72Light Sequencer Sound to Light Adaptor 15 99 4Loudspeaker DC Protection Unit 13 82 56Low Z Microphone Preamp 5 20 54Mapmix Six Channel Audio Mixer 3 11 2Master & Headphone Module Velleman Modular

Mixing System 12 64 65

Metrobeat Electronic Metronome 11 58 16Microsonic Audio Booster 11 55 8MIDI 8 Way Through Box 8 34 41Millennium 4-20 20W Valve Power Amplifier Part 1 13 73 24Millennium 4-20 20W Valve Power Amplifier Part 2 *13 74 36Millennium 4-20 Update 14 87 48Mixing It Part 1 Module Specifications,

Construction & Use 5 17 19Mixing It Part 2 Module Specifications,

Construction & Use cont. 5 18 16Mixing It Part 3 Using The Modules 5 19 49Monitor & Effects Module Velleman Modular

Mixing System 12 62 48Newton Valve Preamplifier Phono Module * 14 85 9

Newton Valve Preamplifier PSU Module * 14 85 64Newton Valve Preamplifier Tone Control Module 14 86 36Newton Valve Preamplifier Update. Tone Control Unit 15 103 40Noise Reduction Unit Mark 2 * 3 11 10Passive Direct Injection Box 15 102 32Peak Level Indicator * 1 1 22Personal Stereo DNL (Dynamic Noise Limiter) 3 9 36Pink Noise Generator 13 72 60Play Along Mixer 5 17 53Pre-Programmed Sound Generator (Velleman) 11 57 24Psychedelic Wah Wah Pedal 13 82 16Public Address System 6 21 47Remote Controller for 25W MOSFET Amplifier * 1 4 14ROM Expansion Module for Digital Speech

Playback Module 9 35 56Simple 4-to-1 Audio Mixer 15 105 56Simple MIDI Merge Unit 13 77 46

Siren Sound Generator 15 104 34SPO256 Speech Synthesiser * 9 36 48Steam Whistle/2-Tone Diesel Horn 13 83 8Stereo 100W Car Amplifier (Velleman) 11 55 24Stereo Dynamic Noise Reduction System SM-666 9 40 56Stereo RIAA Correction Preamplifier 14 90 52Surround Sound Processor 9 36 16Syntom Drum Synthesizer 9 38 48

TA-10 Stereo Preamplifier 8 33 56TDA2822M 650mW Stereo Amplifier 8 34 4

The Walkamp Add On Amplified Loudspeaker 12 65 24Three Gun Sound Generator 9 36 77Tunable Scratch Filter 2 6 16Two Way MIDI Switch Box * 10 46 4Ultrasonic Detector/Listening Device 14 90 12Universal Stereo Preamplifier 14 91 76Unregulated Power Supply Module Velleman

Modular Mixing System 12 65 53Voice Modulator 15 96 9Voice Vandal (Speech Processor) * 14 89 48Watt Watcher 7 27 39Western Sounds Generator 14 92 4

PROJECTS Automotive Electronics

Automatic Rear Wiper Control Unit 13 74 4Car Alarm Ultrasonic Interface 13 79 52Car Audio Switching Power Supply Unit 10 46 16Car Battery Charge/Discharge Idle Monitor 13 78 4Car Battery Monitor 1 1 16Car Battery Monitor (Second Time Around) 9 37 56Car Burglar Alarm 1 4 20Car Digital Tachometer (Second Time Around) 9 37 65Car Headlight Alarm (Velleman) 12 65 36Car Headlights Delay 14 95 48Car Interior Light Controller 13 82 33Car Lamp Monitor 13 80 24Car Lights On Warning Indicator 11 50 8Car Parking Radar System (Velleman) 12 62 24Courtesy Light Controller 15 100 6Courtesy Light Extender 10 44 36Digital Miles-Per-Gallon Meter 1 2 52Digital Tachometer 14 90 36Frost Indicator (Velleman) 12 60 77Ignition Amplifier (Velleman) 12 68 53In-Car Amplifier PSU 14 84 56Intelligent Split Charge Unit 13 81 44Intermittent Wiper Controller (Velleman VE03D) 13 75 56Over Rev Indicator 15 102 40Rear Window Demister Aerial 15 96 64Rear Window Demister Timer 15 98 14Simple Car Test Probe 13 76 59Stereo 100W Car Amplifier (Velleman) 11 55 24Ultrasonic Car Alarm 4 15 40

PROJECTS Computer/M icroprocessor16 Channel Logic Tester 4 16 5416 Channel Logic Tester Update 9 37 6224 Line Programmable I/O Card for the IBM PC &

Compatibles 10 43 24Amstrad 8 Bit Input Port

(CPC464/664/6128 Computers) 5 20 48Amstrad Expansion System Part 1

(CPC464/664/6128 Computers) 5 18 36Amstrad Expansion System Part 2

(CPC464/664/6128 Computers) * 5 19 20ASCII Encoded Keyboard 5 17 42Computer Interface Board 14 88 40

Dragon 32 ExtendiPort 3 10 3Dragon 32 Input/Output Ports 2 8 23Dragon 32 RS232/Modem Interface * 2 8 54



12/18


EPROM Programmer Card 8 31 64Extra High Resolution Graphics for the ZX81 3 9 46Full Size Keyboard for ZX81 Microcomputer * 1 3 2IBM Golfball Printer Driver Part 1 4 16 2IBM Golfball Printer Driver Part 2 * 5 17 25IBM PC Centronics Input Port 13 77 30Interfacing Computers to Consumer Electronics 13 73 64Keypad for the Z80 6 22 28Light Pen for Atari, VIC20 & Commodore 64 3 12 38Logic Pulser 3 9 59

Mains Tx/Rx Driver Module 4 16 44Motherboard for the BBC Micro 3 11 27Oric 1 Maplin Modem Interface 3 10 37Oric Talk Back Speech Synthesiser * 3 9 24Packet Radio Modem 13 78 48Parallel Interface Relay Card 11 57 46PC Opto-Isolator Card for the IBM PC

and Compatibles 12 66 8PC Prototyping Card for the IBM PC

and Compatibles * 12 67 24PC Relay Card for the IBM PC & Compatibles 12 65 8PC Sound Generator 11 58 24PC Teletext Decoder Interface Card 14 94 24PC Teletext Decoder Tuner Module 14 94 40

PC Weather Station * 12 70 8PC Weather Station Software Update 15 100 44PlC16C84 Programmer 15 105 3244RM9011 Serial to Parallel Converter Module 11 49 32RS232 Serial Line Tester 14 89 32RS232 Serial Line Tester Issue 89 Update 15 100 76RS232 to 8 Bit Digital 110 Converter 15 97 40RS232 to TTL Converter 3 9 22RS232 to TTL Converter MkII 8 31 40Serial to Parallel Converter 11 49 32Sharp MZ-80K Serial Interface * 4 15 18Sound Generator for the ZX81 2 5 50Spectrum Easyload * 3 10 42Spectrum I/O Controller 4 14 8

Spectrum Keyboard 3 9 5Spectrum Parallel/Serial Port 4 16 37Using Temperature Module FE33L

(Interfacing to a PC) 12 71 28VIC 20 Extendiboard 3 9 13VIC 20 RS232 Interface * 2 7 2VIC 20 Talk Back Speech Synthesiser * 2 6 2Video Digitiser 15 96 40Z80 CPU Module 4 15 2Z80 Development System 15 97 4Z80 Development System (Second Time Around) 11 58 56Z80-B CPU Card (Frame Store Part 1) 6 23 10ZX Spectrum RS232/Modem Interface * 2 8 60ZX Spectrum RS232/Modem Interface Modifications 3 11 29

ZX81 Extendi-RAM 3 9 63ZX81 Input-Output Port 1 4 56ZX81 Modem Interface * 2 7 22ZX81 Talk Back Speech Synthesiser * 2 6 8ZX81 TV Sound & Normal-Inverse Video 2 6 50

PROJECTS Control1 to 300 Second Timer 9 38 521.2kW Power Controller 9 40 42.8kW Power Controller 3 10 1215 Channel Infra-Red Transmitter 11 59 5615 Channel Infra-Red Remote Control Receiver

(Velleman) 12 69 722-Wire 8-Channel Communication Transmitter

and Receiver 13 77 60Automatic Rear Wiper Control Unit 13 74 4

Car Interior Light Controller 13 82 33Day/Night Thermostat 14 84 73Digital Central Heating Controller 2 5 44Digital Enlarger Timer/Controller * 2 7 50Drill Speed Controller 15 104 24Four Channel Running Light 15 103 56Galactic Timer Part 1 The Timer Card * 10 44 8Galactic Timer Part 2 The Relay Card 10 45 56Galactic Timer Part 3 The Triac Card 10 46 24Hi-Low Switch 8 32 24

Hobbyistss Temperature Controller 5 17 37Infra-Red Door Lock * 12 68 12Infra-Red Remote Control Extender 13 72 16Infra-Red Switch 12 71 21Interfacing Computers to Consumer Electronics 13 73 64Intermittent Wiper Controller (Velleman VE03D) 13 75 56Light Level Switch 9 37 48Liquid Level Controller 15 105 24Mains Controller for 8 Channel Fluid Detector 4 13 34Model Train Signal Lights Controller 14 86 20Multi-Purpose 555 Timer Card 12 69 40Multi-Strobe Interface 15 104 9Pattress Mounting Dimmer Switch 15 103 9PWM Drill Speed Controller 13 81 16

PWM Motor Drive Module * 3 12 44Remote Power Switch 8 34 46SA-218 Intelligent Keypad 8 32 32Slave Flash Trigger 15 98 2222Sound Activated Trigger 14 88 32Steam Whistle/2-Tone Diesel Horn 13 83 8Stepper Motor Driver 5 18 35

Temperature Controller * 10 43 8Three Mini Model Train Projects Track Circuiting,

Automatic Loop, Head and Tail Lamps (Update) 14 84 30Tungsten Lamp Surge Controller 6 21 58TY41 MKV Infra-Red Remote Control Switch 8 33 64Universal Timer 1 1 38Universal Timer Module 14 86 60

Versatile Automatic Lamp Dimmer 14 87 56Zero Crossing Opto Switch * 10 41 56

PROJECTS Fibre Optic & Laser10 Channel Fibre Optic Digital Multiplexer 11 48 482mW Laser and Controller 8 29 40Digital Data Link Module 11 47 48Fibre Optic Audio Link 5 20 37Laser Pointer 15 103 24

PROJECTS FuntronicsProject No 1 Bulb and Fuse Tester 11 48 16Project No 2 Transistor Tester 11 49 56Project No 3 Water Indicator 11 50 76Project No 4 Light-Dark Indicator 11 51 32Project No 5 The Flasher 11 52 48Project No 6 Electronic Siren 11 53 32Project No 7 Pet Communicator 11 54 40Project No 8 Decision Maker 11 55 68Project No 9 Morse Code Communicator 11 56 48Project No 10 Music Maker 11 57 40

PROJECTS GeneralChristmas Star and Zero Crossing Opto Switch 11 48 32Christmas Tree Light Sequencer 14 84 9Colour Snap Game 1 1 18Digital Alarm Clock 15 99 56Disco Partylite 3 Channel Light Controller 7 25 18Display Driver Module (LM3914/15/16) 4 14 46

Door Chime * 14 95 5Doorbell For The Deaf 2 8 42Dual Electronic Dice (Velleman) 12 61 40



13/18


Passive Direct Injection Box 15 102 32Programmable Metronome 7 26 53Psychedelic Wah Wah Pedal 13 82 16Simple Melody Generator * 7 26 24Simple MIDI Merge Unit 13 77 46Sound Generator for the ZX81 2 5 50Synchime * 2 8 2

Three Tone Chime (Velleman) 11 58 4UM34811A Multi-Tune Generator * 7 26 35

PROJECTS Power Supplies & Batteries+/-15V Regulator Kit 15 105 1212V DC to 230V AC Inverter (Velleman VF35Q) 13 78 6412V DC to 240V AC Converter 12 66 6412/24V to 220V Inverter * 15 98 29220/240V AC 100W Inverter 2 5 208W 12V Fluorescent Tube Driver 3 10 18Car Audio Switching Power Supply Unit 10 46 16Cautious Ni-Cd Charger * 3 11 36Graphic Equaliser Power Supply & Switching Unit

(Velleman VE45Y) 13 73 77High Quality Power Supply * 10 42 32Intelligent Ni-Cad Battery Charger Mark II 15 100 22

Intelligent Ni-Cd Battery Charger 13 79 35Intelligent Split Charge Unit * 13 81 44Laboratory Power Supply 0-30V 10A 11 58 40Lead Acid Battery Charger Modules 6V and 12V 11 53 48Light Sensitive Battery Saver 15 96 72Low Cost Power Supply Unit Fixed/Variable

up to 1A * 11 47 64Mains Power Conditioner 14 91 24Mains Power Switch 14 93 42Rapid Charger Track Side Charger for Ni-Cd

Racing Packs 7 25 45Simple Stabilised Valve Power Supply 12 68 39Slow Charger for 7.2V & 8.4V Ni-Cd Packs 7 25 29

The Maplin MiniLab, Power Supply, Logic I/O

& Oscillator 12 66 24Uninterruptible Power Supply

(Using 12V DC to 240V AC Converter) 12 66 64Unregulated Power Supply Module Velleman

Modular Mixing System 12 65 53Versatile Power Supply 5V, 15V, 3-20V 9 39 14Voltage Regulator Kits 15 106 11

PROJECTS Radio Communications2-Metre 30 Watt Amplifier 14 85 482-Metre FM Receiver 13 83 2420 Metre 20 Watt Linear Amplifier * 13 81 6220 Metre All Mode Receiver (CP13P) 13 76 44

20 Metre CW Transmitter (CP09K) 13 76 44418MHz Encoded FM Receiver * 13 83 56418MHz Encoded FM Transmitter 13 83 4780 Metre Amateur Receiver * 3 10 4Active Aerial & Tuning Unit 5 19 2Aerial Activator 13 80 8AFSK (Audio Frequency Shift Keying) Generator 9 39 48AR-1 Aircraft Band Radio Receiver (CP17T) 13 75 40Beginners AM (Amplitude Modulated) Radio 10 42 48CMOS Crystal Calibrator * 2 7 39CW Filter 14 93 50Direct Conversion Short Wave Receiver 7 28 2Dxers Audio Processor 2 7 44

Electronic CW Keyer 14 91 48Maplin Ranger 160m Receiver * 10 43 48Maplin TU1000 RTTY Terminal 3 12 6

Eight Channel Fluid Detector 3 11 51Electronic Digidice 8 34 24Electronic Memo Pad 14 87 9Enlarger Exposure Meter * 3 11 24Fest-O-Meter 12 60 4Flickering Christmas Candle & Lantern 13 72 4Forged Bank-Note Detector 13 77 4Games Timer 1 1 24General-Purpose Stroboscope Module 12 68 44Interactive Doorbell 14 91 8

Kojak Siren 15 101 32Large 7 Segment Numeric Display Modules

(Velleman VF01B & VE63T) 13 74 53LED Christmas Tree 11 48 4Live Wire Game 13 78 16Multi Colour Pendant 1 1 25Multi-Strobe (Strobe Light) * 14 92 36Multi Strobe Part 2 - The Sequencer 15 100 48Pass The Bomb! Electronic Pass The Parcel 1 1 12Priority Quiz Buzzer/Indicator 13 72 32Quiz Game Scorer 14 84 24Reusable Fuse 13 79 20Soldering Iron Station * 11 59 8

The Breeze Air Ioniser 9 35 40

The ZX81 and Your Boat Part 1 3 12 2The ZX81 and Your Boat Part 2 4 13 26Torch Finder Rechargeable Torch &

Emergency Light 12 66 40Weather Station 8 33 8Wheel of Fortune Electronic Roulette Wheel 8 29 16Wind Speed & Direction Indicators 8 31 8Xenon Flash Tube Driver * 3 11 21Xmas Star 10 41 32

PROJECTS Model Control4 Channel PWM Controller * 4 14 42Control-A-Train PWM Controller 4 14 54Digital Multi-Train Controller * 1 2 2Digital Model Train Controller Mk II 12 71 4

Low Power Radio Control System * 4 13 43Model Train Automatic Loop Control 2 5 60Model Train Chuffer * 13 79 4Model Train Head & Tail Lamp Control 2 5 60Model Train Receiver Mk II 12 71 44Model Train Signal Lights Controller 14 86 20Model Train Track Circuiting 2 5 60Remote Control for Digital Multi-Train Controller * 1 3 16Servo & Driver Module 3 11 45Servo Tester 6 22 22

Train Effects Generator 15 106 61

PROJECTS Musical120W Combo Amplifier * 1 1 2Active Transformer DI Box 15 106 50ADA-Echo Digital Echo Unit 5 19 36ADA-Echo Digital Echo Unit Update 9 37 30Computadrum 3 12 20Earth Lift Box 15 102 15Electronic Volume Pedal 15 99 16Electromuse (Piezo Electric Tweeters) 11 49 78Guitar Equaliser 4 15 54Guitar Headphone Amplifier 14 86 4Guitar Phantom Power Supply Unit 15 104 40Loudspeaker DC Protection Unit 13 82 56Melody Maker 11 56 16Metrobeat Electronic Metronome 11 58 16

MIDI Test Box 14 94 6Musical Announcer Doorbell with a Difference * 4 13 22Passive Direct Injection Box 12 67 32



14/18


Morse Code Practice Oscillator 7 27 46Morse Decoder (Velleman) * 11 53 72Micron III MSF Rugby Clock (Mk 3) 14 88 8Notch Filter 6 21 35Packet Radio Modem * 13 78 48RTTY FSK Demodulator Part 1 8 32 16RTTY Serial Format Translator 9 35 24RTTY Sharp Audio Filter 8 33 24Rugby Clock Receiver 11 47 8Shortwave Regenerative Receiver 14 92 52SSB Filter 14 94 73Superscan (HF/VHF/UHF Radio Scanner) * 14 89 8SW TRF Receiver (Exploring Radio Part 5) 8 29 68Synthesised Digital VHF/FM Tuner 12 67 8

TDA7000 FM Radio * 3 9 42TDA7000 FM Radio MkII 7 27 2TDA7000 FM Radio MkII Modifications for

Stereo Operation 8 30 29TRF Marine Band Receiver (Exploring Radio Part 8) 8 32 37TRF MW Reflex Receiver (Exploring Radio Part 7) 8 31 44TRF Receiver (Exploring Radio Part 2) 7 26 41UHF Prescaler 14 94 56VHF Crossed Dipole Aerial 14 85 76VHF Preamplifier 6 24 20VHF/UHF Preamplifier * 13 81 32Weather Satellite Down Converter Part 1 6 22 46Weather Satellite Down Converter Part 2 * 6 23 35Weather Satellite Prediction Table 6 24 30Weather Satellite Receiving System Part 1

Receiver 5 18 2Weather Satellite Receiving System Part 2

Decoder * 5 20 2

PROJECTS Robotics

Trundle The Channel Four Robot 4 14 16Zero 2 Ins and Outs Interfacing to

Various Computers 4 15 17

Zero 2 Robot 4 14 36PROJECTS Security/Protection418MHz Radi-Call Receiver 15 102 48418MHz Radi-Call Transmitter 15 101 166 Channel Burglar Alarm Panel 6 21 10Anti Theft Device 13 80 44Automatic Floodlight Controller 4 16 14Bicycle Alarm 11 49 8Car Alarm Ultrasonic Interface 13 79 52Code Lock * 2 8 12Compuguard Vehicle Alarm Part 1 * 9 40 9Compuguard Vehicle Alarm Part 2 * 10 41 8Doppler Module Control & Interface Unit 1 3 9

Electronic Watchdog (Velleman) 11 53 4Explosive Gas Alarm * 4 13 21C Shortwave Receiver 1 ~.- 1 02 10418MHz Radi-Call Receiver 15 102 48418MHz Radi-Call Transmitter 15 101 16Crystal Radio Set 15 100 90External Horn Programmable Timer 2 5 40External Horn Programmable Timer Update 6 24 28Fridge Check 13 76 12G PS Development System - Part 1 15 97 24G PS Development System - Part 2 15 102 56Home Security System * 1 2 38Infra-Red Code Lock (Velleman) 11 56 4Infra-Red Proximity Detector (Second Time Around) 11 54 48

Infra-Red Door Lock * 12 68 12Infra-Red Movement Detector * 3 9 19Infra-Red Proximity Detector * 5 20 20

Keycode Lock (Velleman VE76H) 13 80 71Loop Alarm * 12 70 24Loudspeaker DC Protection Unit 13 82 56Low Cost Home Alarm 10 45 40Mains Failure Alarm 14 95 40Maplin RTX3 Radar Doppler Intruder Detector 1 3 6Panic Button (for use with Maplin Home

Security System) 2 5 16Peep Alarm 11 51 48Reusable Fuse 13 79 20

Rugby Clock Superhet Receiver 15 99 32Siren Sound Generator * 7 26 44Superscan Mark II Active Aerial 15 106 21

The Ultrasonic Intruder Detector 1 4 51Vehicle Intruder Alarm 10 46 56VHS Video Recorder Alarm 6 24 59Wireless Alarm Upgrade 14 89 24

PROJECTS Telecommunications32 Line Expansion for Maplin Digi-TelTelephone Exchange 3 10 48

AutoRing Telephone Ring Simulator 12 61 24Call Code Switch 14 92 12Maplin Digi-Tel Telephone Exchange * 1 4 2

Telecommunications Amplifier (Velleman) 12 60 48Telephone Bell Repeater 13 83 40The Maplin Modem * 2 5 2

PROJECTS Test & Me asurement41/2 Digit LCD Counter 6 22 3541/2 Digit LCD Counter (Second Time Around) 11 55 40A Simple Sweep Oscillator * 2 7 8Audible TTL Logic Probe 12 66 54Audio Frequency Peak to Peak Millivoltmeter 12 67 57Audio Frequency Sine/Square Wave Generator 12 63 24Car Battery Charge/Discharge Idle Monitor 13 78 4Christmas Tree Lights Continuity Tester 13 72 44CMOS Logic Probe 1 1 20

CMOS Logic Probe 10 46 32Digital Capacitance Meter 6 23 46Digital Storage PC Oscilloscope . 15 101 40Discriminating Continuity and Leakage Tester 14 87 24Discriminating Continuity Tester 9 39 5Flash Meter * 4 13 12Frequency Meter Adaptor 3 9 10Fridge Check 13 76 12H14/H14DL Humidity Sensors 11 55 48In-Situ Transistor Tester * 12 64 16Infra-Red Remote Control Tester 10 44 24K7000 Signal Tracer/Injector (Velleman) 11 54 67L/C Meter Adaptor 13 82 49Lets Get Digital with the TTL Test Unit 13 78 32

Live Wire & Mini Metal Detectors 11 48 64Live Wire Detector 4 14 2Logic IC Tester 8 32 40Logic Probe 2 8 48Low Cost 10MHz Counter 10 45 48Low Cost Audio Waveform Generator 11 48 24Low Cost Bench Amplifier (500mW) 12 64 8Low Resistance Continuity Tester 11 53 16Maplin Moisture Meter 2 6 40Mini Metal Detector 7 25 32Multi-Mode Digital Stopwatch * 1 2 16Noise Generator 7 27 56Nuclear Radiation Monitor 6 24 2Pink Noise Generator 13 72 60

Programmable Pulse Generator 12 61 8Programmable Timer/Clock Module 11 50 48Signal Tracer 9 39 4



15/18ELECTRONICS AND BEYOND INDEX VOLUMES 1 to 15 PAGE 14


Simple Car Test Probe 13 76 59SM-43 Digital Panel Meter 0-200mV 8 31 56

Temperature Gauge 1 1 58Temperature Module Expansion 7 25 2Temperature Monitor 11 48 8Tester for Domestic Electrical Appliances 7 25 40Tetraprobe 4 in 1 Tester 10 42 4The 8 Digit Frequency Counter * 1 4 40The Maplin MiniLab, Power Supply, Logic I/O

& Oscillator 2 8 16

The Maplin MiniLab, Power Supply, Logic I/O& Oscillator (2nd Time Around) 12 66 24

Transistor Tester 9 39 6Using Temperature Modules FE33L, FP64U,YT99H, YU00A 12 71 28

Wide Range Lightmeter 12 71 41Wiring Allocation Tester 10 45 8

PROJECTS Video & TVAudio & Video Modulator 8 30 65Audio/Video Generator 9 37 8CCD Camera TV Modulator IUpdated Circuit) 15 98 4CCD TV Camera Modulator 13 75 8Frame Store Part 1 Z80-B CPU Card 6 23 10

Frame Store Part 2 High Resolution Card,PSU, Motherboard etc. * 6 24 40Infra-Red Remote Control Extender 13 72 16Infra-Red Video Link Part 1 The Transmitter 11 51 16Infra-Red Video Link Part 2 The Receiver 11 52 32Monochrome CCD Camera 11 50 16NICAM Stereo TV Tuner Unit IR Remote

Control System 10 41 24NICAM Stereo TV Tuner Unit Part 1 9 38 16NICAM Stereo TV Tuner Unit Part 2 9 39 16NICAM Television Tuner * 9 36 32PAL Colour Encoder 8 29 48

Television Effects Unit 10 42 8The Maplin Video Box 11 51 64

The Maplin Video Box (March 92) Modification 11 57 21TV Colour Bar Generator 13 77 20VHF/UHF Preamplifier * 13 81 32VHS Video Recorder Alarm 6 24 59Video Amplifier * 10 44 48Video Digitiser 5 17 12Video Digitiser 15 96 40Video Dubber Switching Amplifier 8 30 40Video Kaleidoscope 15 96 16Video Line Selector 14 95 24

PROJECT FAULT FINDINGPart 1 Checking, Component Testing 3 12 47Part 2 Initial Checks, Voltage Checks 4 14 50

Part 3 Signal Injection & Tracing 4 15 44Part 4 Using Logic Probes & Pulsers 4 16 50Part 5 Using Your Oscilloscope to the Full 5 18 52

PULSES ON LINES A Beginners GuidePart 1 A Circuit Around the Fields, Transmission

Lines Ideal & Real 13 77 39Part 2 Bouncing with Energy, Pulse Transmission 13 78 45Part 3 Terminal Cases, Lumped or Distributed 13 79 55

RS232 SERIAL PORT EXPANSION SYSTEMPart 1 Intelligent Motherboard * 11 59 72Part 2 Open Collector Output Card 12 60 64Part 3 Analogue to Digital Converter Card 12 61 65Part 4 Add-on Relay Card 12 62 64

Part 5 Opto Coupler Input Card 12 63 64Part 6 Digital to Analogue Converter Card 12 64 72Part 7 8 to 1 Channel Analogue Multiplexer Card 12 65 40

SECOND TIME AROUND100W MOSFET Power Amplifier 10 41 4841/2 Digit LCD Counter 11 55 40Car Battery Monitor 9 37 56Car Digital Tachometer 9 37 65CMOS Logic Probe 10 46 32Courtesy Light Controller 15 100 6Dynamic Noise Gate 9 40 72Infra-Red Proximity Detector 11 54 48Intelligent Ni-Cad Battery Charger Mark II 15 100 22

Syntom Drum Synthesizer 9 38 48The Maplin Minilab, Power Supply, Logic I/O

& Oscillator 12 66 24Vehicle Intruder Alarm 10 46 56Z80 Development System 11 58 56

SEMICONDUCTOR PROCESSINGPart 1 Refining of the Raw Materials * 13 76 20Part 2 Production Techniques 13 77 54Part 3 From Die to Device 13 78 24

SOUND REINFORCEMENT SYSTEMS FOR GIGGING BANDSPart 1 Cables, DI Boxes, Mains wiring etc. 15 102 29Part 2 - Mixing Desks, Typical Set-ups 15 103 27

SQUARE 1 A First Course in the Theory & Practiceof ElectronicsPart 1 Introduction, Components, Units &

Magnitudes etc. 9 37 16Part 2 Electric Current, Series Parallel Circuits,

Decibel etc. 9 38 2Part 3 Resistance, Reactance & Impedance,

Phase etc. 9 39 8Part 4 Semiconductor Diodes 9 40 53Part 5 Analogue v. Digital Systems, Digital Logic,

Boolean Algebra 10 41 36Part 6 Using Digital Logic to Perform

Arithmetic Functions 10 42 18

Part 7 Buses, Microprocessors, AddressDecoding & Memory 10 43 32

Part 8 Sine Wave Oscillators 10 44 27Part 9 Phase Shift & Wien Bridge Oscillators 10 45 18Part 10 Relaxation & Square Wave Oscillators 10 46 8Part 11 Clock Oscillators, Crystal Oscillators

& Monostables 11 47 56Part 12 Positive & Negative Feedback 11 48 19

SURROUND SOUND Fad or Fancy?Part 1 The First Four Channels 13 79 46Part 2 Multichannel and Ambisonics 13 80 66Part 3 Dolby Surround and THX 13 81 52

SWITCHED MODE POWER SUPPLIESPart 1 I ntroduction, Linear v. Switched 9 37 53Part 2 Flyback & Boost Regulators etc. 9 38 12Part 3 Push Pull Converter, Half & Full Bridge etc. 9 39 44

THE FASCINATION OF VINTAGE RADIOPart 1 Whats It All About? 12 60 8Part 2 Widening Horizons 12 61 16Part 3 Devices, Instruments & Data 12 62 72Part 4 Preservation & Restoration 12 63 32

THE HISTORY OF AMATEUR RADIOPart 1 Foundations Laid 11 59 4Part 2 New Licences, Atlantic Contacts etc. 12 60 73Part 3 War Years, New Licences, Television,

VHF Licence etc. 12 61 60


16/18PAGE 15 INDEX VOLUMES 1 to 14 ELECTRONICS AND BEYOND


THE HISTORY OF COMPUTERSPart 1 The First Attempt: The Abacus 12 63 30Part 2 The Second Attempt: The Slide Rule 12 64 14Part 3 The Third Attempt: The Pascaline

Mechanisation Arrives 12 65 46Part 4 The Fourth Attempt: Leibnizs Calculator:

Improved Mechanisation 12 66 44Part 5 The First Computer Scientist: Babbage 12 67 46Part 6 The Early Theoreticians: Boole and J evons 12 69 78Part 7 Other Men, Other Machines, 1870 to 1940 12 70 5

Part 8 ENIAC and its Creators 12 71 50Part 9 The Reduction in Size of Computer

Hardware 13 72 70Part 10 The Future Towards the Brain 13 73 22

THE INTERNETPart 1 - What is the Internet 15 96 73Part 2 - Review of Internet Providers 15 97 72Part 3 - The World Wide Web 15 98 35Part 4 - Business on the Internet 15 99 72Part 5 - The Future of the Internet 15 100 36

THE OSCILLOSCOPE IN ACTIONPart 1 The Cathode Ray, Screen, Timebase etc. 11 53 35

Part 2 AC/DC Voltage/Current Measurement 11 54 36Part 3 Time, Frequency & Phase Measurement 11 55 13Part 4 Lissajous Figures, Circular Timebase,

Modified Ring Pattern 11 56 28

THE STORY OF RADIOPart 1 The Early Years 5 17 31Part 2 The First Decade 5 18 22Part 3 The Birth of the Valve 5 19 26Part 4 The First World War 5 20 44Part 5 The 1920s 6 21 31Part 6 The Golden Age 6 22 38Part 7 The Second World War 6 23 54Part 8 The Post War Years 6 24 37

USING AUDIO PREAMP ICsPart 1 LM381/LM382/LM387 Integrated Circuits 13 74 28Part 2 LM387/TDA3410/MC3340P/NE570/571

Integrated Circuits 13 75 20

VALUE ADDED INTERNET SERVICESPart 1 - Internet Access 15 101 76Part 2 - Adding More Value 15 102 74Part 3 - On-Line Services - Compuserve 15 103 74Part 4 - On-Line Services - AOL, MSN 15 104 64

VALVE TECHNOLOGY A Practical GuidePart 1 A Little History, Thermionic Emission, Diode

& Triode Valves etc. 12 67 48Part 2 Introducing the Triode Amplifier 12 68 36Part 3 Design of a Triode Amplifier, The Cathode

FollowerPart 4 The Tetrode Valve, Pentode Valve 12 70 57Part 5 The Pentode Amplifier Equivalent Circuit

& Voltage Amp Design 12 71 66Part 6 Preamplifier, Equaliser & Driver Circuits 13 72 47Part 7 Triode v. Pentode, Output Transformer,

Hi-Fi Amplifiers 13 73 57

VELLEM AN KITS10 Band Graphic Equaliser 12 71 61

12V DC to 230V AC Inverter (Velleman VF35Q) 13 78 6415 Channel Infra-Red Remote Control Receiver 12 69 727 LED Audio Power Meter 12 69 57

8 to 1 Channel Analogue Multiplexer Card(RS232 Expansion System) 12 65 40

Add-on Relay Card (RS232 Expansion System) 12 62 64Analogue to Digital Converter Card

(RS232 Expansion System) 12 61 65Audio Spectrum Analyser 12 70 32Car Headlight Alarm 12 65 36Car Parking Radar System 12 62 24Digital to Analogue Converter Card

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