Talking Electronics Publications

Talking Electronics Publications

14 FM Bugs to Build
$24.95
B-14FM

CONTENTS

All the kits produced by Talking Electronics
MAGAZINES and ORDER FORM
Update of our most popular IBM Public Domain titles
•HIKERS ALARM
For use in emergencies. Has beep and audio Range 1km
•VOX BUG MkIV
Voice activated FM transmitter with 800m range and homing beep during "listening"
•WALL BUG
An FM bug that listens through glass etc Range 400m
•PEN BUG MkIII
An FM bug concealed in a pen Range 10 metres •VOYAGER MkIl
An FM bug that fits on top of a 9v battery Range 800m
•WAT ER BUG
An FM bug that senses water and transmits up to 1km
•THE CRICKET
Transmits a constant tone Range 100m
•VOX MkV
Our Surface-Mount version of VOX
•MkIV
•FIELD STRENGTH METER
Measures the output of our FM transmitters
SECURITY DEVICES
Full range of built-up Security Devices from TE

•PROJECT TO BUILD

5 More FM Bugs
$5.40
B-5MFM

CONTENTS
List of FM Transmitters
It's magic
•The Wasp
The 'Q' Factor
•Crystal Beep Bug
•Crystal Locked FM Bug
•Beetle MkIll
Quotations
•Car Tracker
Money Money Money
•FM Radio
Price List
Order Form
•Voyager MkII
•VOX MkIV
•VOX MkV

•PROJECT TO BUILD

SIX BD679 Projects
$5.40
B-6BD

CONTENTS
Fixing A Project
•Capacitor Discharge Unit MkIl
•Automatic AA Nicad Charger
•Screamer Siren
•Battery Backed Siren
How A BD 679 Transistor Works
•20w Fluorescent Inverter
Iiving With 12v
•2-Amp Power Supply
•Breakdown Beacon
•RD 679 Output Module
•Courtesy Light Extender
•Micro-Comp Computer
•Noughts & Crosses

•PROJECT TO BUILD

CMOS Data Book
$9.20
B-CDB1

Cover Projects
$6.00
B-CP1
CONTENTS
•MINI FREQUENCY COUNTER
•SQUARE WAVE OSCILLATOR
•DIGITAL FREQUENCY METER
•LOGIC DESIGNER
•DUAL TRACKING POWER SUPPLY
•HANGMAN
•STEREO VU METER
•LED VOLTMETER
•TE CLOCK
•LOTTO NUMBER SELECTOR
•TE LOGIC PROBE
•KEN'S DUAL POWER SUPPLY
•FM BUG
•LED DICE

•PROJECT TO BUILD

Digital Electronics Revealed
$7.20
B-DER1

Electronics For Model Railways 1
$5.40
B-EMR1

CONTENTS
•Air Horn
•Capacitor Discharge
Computers
•Crossing Boom Control
•Crossing Expansion
•Crossing Sound
•Dedicated Microcomputer
•Fluorescent Simulator
•Hex Train Sensors
•LED resistors
•Level Crossing
•Light Chasers & Shop Displays
•Light Sequencer
•Pedestrian Crossing
•Power Supply
•Remote Relay Unit
•Rotating Lights
•Scale Fluorescent Lamps
•Searchlight Adaptor
•Shop Display Driver
•Shop Display PC board
Street Signs
Three Colored LEDs
•Throttle
•Train Detector
•Warning Lamp Unit

•PROJECT TO BUILD

Electronics For Model Railways 2
$5.75
B-EMR2

CONTENTS
•Level Crossing Lights
•Economy Power Supply
•Signals
•Tunnel Stretcher & Station Signal
Computers and Model Railways
•Delay Module
•Walk-Around Throttle
•Servo Driver
•Diesel Sound Generators
•Simple PWM Throttle
•Fibre Optics
Trees
Data

•PROJECT TO BUILD

Electronics Notebook 1
Starting in TTL
$7.20
B-EN1

CONTENTS
•BUILDING THE TRAINER
MODIFICATIONS TO PC
CIRCUIT DIAGRAM
HOW THE CIRCUIT WORKS
BEFORE YOU START
SUMMARY OF GATES
ALL THE COMBINATIONS
THE LED AS AN INDICATOR
FACTS ABOUT A LED
THE BUFFER
THE INVERTER
THE AND GATE
THE NAND GATE
THE INHIBITED NAND GATE
THE ENABLED NAND GATE
GATING A SIGNAL
THE OR GATE
THE NOR GATE
THE XOR GATE THE DATA SELECTOR
THE LINE SELECTOR
SUMMARY OF GATES
SEQUENTIAL LOGIC
THE ASTABLE MULTIVIBRATOR
THE MONOSTABLE MULTIVIBRATOR
THE BISTABLE MULTIVIBRATOR
THE R-S FLIP FLOP
THE R-S FLIP FLOP AS A WAVE SHAPER
THE GATED (CLOCKED) FLIP FLOP
THE D FLIP FLOP
THE J-K FLIP FLOP
THE 4 FLIP FLOP MODES
THE 4 J-K FLIP FLOP MODES
THE RIPPLE COUNTER
MODULO-10 RIPPLE COUNTER
THE SHIFT REGISTER
INDEX

Electronics Notebook 2
$6.00
B-EN2

CONTENTS
TALKING ELECTRONICS
120 YEARS OF THE TELEPHONE
MAKING YOUR OWN PC BOARDS
CURRENT LIMIT RESISTOR
REPLACING PNP TRANSISTORS
TOUCH SWITCH
SUPER ALPHA PAIR
THE DRY CELL DECEPTION
MEL-12 PHOTO DARLINGTON
SPEEDING UP A MULTIVIBRATOR
TWO OSCILLATORS TO AVOID
A 90MHz TRANSMITTER
THE PHASE SHIFT OSCILLATOR
TOUCH SWITCH
DESIGN VALUES
THE COUPLING CAPACITOR
MOTOR BOATING
BATTERY DECOUPLING
THE LOAD RESISTOR
COMBINING STAGES
PUSH PULL
TURN-ON VOLTAGE
TOUCH FLIP-FLOP SUPER ALPHA CIRCUITS
MAKING YOUR OWN ZENER DIODE
SUPER ZENER
GATING WITH DIODES
THE OR GATE
SIX DIODES GATES
CHIPS
PIN NAMES
GATES
USING GATES
THE AND GATE
INTERFACING
THE INPUT SIGNAL
THE TRANSISTOR STAGE
THE RESET LINE
MURPHY'S LAW
THE INVENTION OF NOTHING
TREE CARTOON
THE ELECTRET MICROPHONE
SIREN ARTICLE
HOW A MOBILE WORKS
THE TANK CIRCUIT
TEST
INDEX

Electronics Notebook 3
$6.00
B-EN3

CONTENTS
'n' VALUES, 1% RESISTORS
HOW TO SOLDER
HOW A TRANSISTOR WORKS
THE TRANSISTOR
TRANSISTOR STAIRCASE
SURFACE MOUNTING
THE BRIDGE RECTIFIER
POWER SUPPLY FACTS
VOLTAGE MULTIPLICATION
WHY DIODES FAIL
THE ZENER
HIGH IMPEDANCE LINES
AUTOMATIC RESET
THE SCHMITT TRIGGER
GATING THE SCHMITT TRIGGER
THE CRO
SETTING UP THE CRO
READING WAVEFORMS
THE TRIGGER PULSE
LOCATING A FAULT IN A DISPLAY
USING A LOGIC PROBE
IS IT HIGH?
EXPERIMENTING FURTHER
THE COMPUTER
WHAT A COMPUTER WILL DO
COMPUTER CIRCUIT
THE INPUT GATING TRANSISTOR
THE OUTPUT GATING TRANSISTOR
THE Z-80 CPU
WHAT'S INSIDE THE Z-80
Z-80 CPU
CPU REGISTER SET
THE ACCUMULATOR
Z-80 HOW IT WORKS
THE 2716 EPROM
Z-80 HOW IT WORKS
BITS, BITES & NIBBLES
WRITING A PROGRAM
TO BLINK THE DISPLAY
TO INCREMENT THE DISPLAY
0 - 9 COUNTER
DJNZ
TEST
DICTIONARY OF TERMS
Z-80 MACHINE CODES for assembly
Z-80 MACHINE CODES for disassembly

Electronics Notebook 4
$6.00
B-EN4

CONTENTS
IDENTIFYING SYMBOLS ETC
Quiz # 1
SOLDERING
PROTOTYPING
HEATSINKING
THE AIR GAP
HOW TO 'READ' A FUSE
DANGER!
THE CAPACITOR
'n' VALUES
FREE ENERGY
USING A CRO
THE FIRST IC
OHMs LAW
EMERGENCY ALARM
THE INDUCTOR
CONSTANT CURRENT
THE THYRISTOR
QUIZMASTER
THE TRIAC
THE PHONE LINE
A BUG ON THE LINE
NEGATIVE LOGIC
HOW A DELAY CIRCUIT WORKS
HOW MANY MILLIAMPS?
HOW MANY AMPS?
HOW A ZENER DIODE WORKS
A LOW POWER 5v REGULATOR
CREATING A NEGATIVE RAIL
WHY THE REGULATOR GOT HOT
PRE-REGULATOR
MULTIPLEXING A DISPLAY
SCAN PROGRAM
BOOLEAN ALGEBRA
HOW A PEN WATCH WORKS
THE PIEZO DIAPHRAGM
A BRIDGE DRIVER
REPLACING A 556 WITH TWO 555's
D FLIP-FLOP MULTIVIBRATOR
IS THIS TRANSISTOR TURNED ON?
MOTOR CONTROLLER
THE NON-INDUCTIVE LOAD
REDUCING INDUCTIVE SPIKES
THE CHAIN LETTER
INDEX

Electronics Notebook 5
$6.00
B-EN5

CONTENTS
STARTING OUT
READING RESISTORS
RESISTOR COLOUR CODE
RESISTORS LESS THAN 10R
SURFACE MOUNT RESISTORS
CAPACITORS
SURFACE MOUNT CAPACITORS
THE ELECTROLYTIC
THE DIODE
DIODE PROBLEMS
TRANSISTORS
SUBSTITUTING A TRANSISTOR
THE FUSIBLE RESISTOR
HOW A TRANSISTOR WORKS
TESTING TRANSISTORS STAGE GAIN
THE CRO
MAXIMUM FREQUENCY
COMPARING CRO'S
CRO HINTS
USING A CRO TO FIX A 27MHz TOY
GETTING YOUR BEC
ELECTRICAL PRINCIPLES EXAM
ANSWERS
ANALOGUE ELECTRONICS EXAM
ANSWERS
DIGITAL ELECTRONICS EXAM
ANSWERS
INDEX

•PROJECT TO BUILD

Electronics Notebook 6
$6.00
B-EN6

CONTENTS
•COMBO-2 transistor Tester
Hfe
ADD ON CAPACITANCE METER
CAPACITOR CODES
COMPONENTS IN SERIES & PARALLEL
THE TIME HAS COME
•FIELD STRENGTH METER MKI
GETTING INTO BUGGING
•FIELD STRENGTH METER MkII
SUBSTITUTING TRANSISTORS
•LOGIC PROBE MkIIB
•CONTINUITY TESTER
A SHEEP IN WOLF'S CLOTHING
THE POSITIVE APPROACH
A HIGH GAIN STAGE
TRI-STATE
•PHONE RING USING A LOGIC PROBE
HOW A CAPACITOR WORKS
TRUTH TABLE QUIZ
•TTL DICE
UNDERSTANDING A CIRCUIT DIAGRAM
STARTING IN TTL
SYMBOLS QUIZ
CROSSWORD NO 3
10 TESTS
10 TEST I
IMPROVING YOUR 10
MORE PUZZLES
GLOSSARY OF TERMS
INDEX: for Notebooks I - 6

•PROJECT TO BUILD

Learning Electronics Book 1
$5.40
B-LE1

CONTENTS
BATTERIES
RESISTORS
THE LED
•3v - 15v TESTER
•THE INFURIATOR
•NIM
•MINEFIELD
THE CAPACITOR
THE DIODE
•2-WAY SIGNAL PUZZLE
THE TRANSISTOR
THE FIRST TRANSISTOR
•THE SUPER TRANSISTOR
•CONTINUITY TESTER
•LIE DETECTOR
•TOUCH SWITCH
•TILT ALARM
•AUDIBLE CONTINUITY TESTER
•ROBOT MAN THE MULTIVIBRATOR
•SIMPLE SIREN
4 FLASHING LED
NOTES ON MATRIX BOARD
•STRENGTH METER
REVISION CROSSWORD
•TEMPERATURE METER
OHM'S LAW
Chap 7 THE PHOTO TRANSISTOR
•4-DIGIT COUNTER
Chap 8 THE AUDIO AMPLIFIER
•EARWIG
DIGITAL ELECTRONICS
•TTL TRAINER DECK
•CO-ORDINATOR
FINAL TEST
INDEX

•PROJECT TO BUILD

Learning Electronics Book 2
$5.50
B-LE2

CONTENTS
THE POWER SUPPLY
•PLUG PACK REGULATOR
QUICK QUIZ I
BIASING
BOOK REVIEW
•LOGIC PROBE MkIIB
ABOUT THE TEC-1C COMPUTER
•CONTINUITY TESTER
THE ANTENNA
•GLOW PLUG POWER SUPPLY
FAULT FINDING
•INTERCOM
ANALYSIS of Continuity Tester
THE PANEL METER
THE VOLTAGE DIVIDER
POWER ELECTRONICS
LETTERS
THE 555 •SQUARE WAVE OSCILLATOR
•COIN FLIPPER
USING PROTOTYPE BOARDS
THE SCHMITT TRIGGER
•OP-AMP TRAINER
More on POWER ELECTRONICS
•VOX MK IV with BEEP
REPAIRING TRANSISTOR RADIOS
•2-CHIP AM RADIO
WHERE TO FROM HERE?
KITS KITS KITS
CIRCUIT SYMBOLS
TEST 1
SYMBOLS QUIZ
INDEX TO LEARNING ELECTRONICS # 1 and 2

•PROJECT TO BUILD

Security Devices
B-SD1
OUT OF PRINT

CONTENTS
EDITORIAL
•SPY BUG
Our fully surface-mount 100m bug.
MY COMMENT
•FIELD STRENGTH METER
A piece of test equipment to test the
output power of a transmitter.
MORE FROM TOM
•ULTIMA
Our 1km bug.
PUBLIC DOMAIN SOFTWARE FM RADIO
An FM radio using a TDA 7000 chip.
•BEEPER BUG
A beeping bug that helps you find things.
Kit price list
Order Form and Magazine prices.
INSIDE TALKING ELECTRONICS
LETTERS
•10 MINUTE TIMER
A timer to convert old-style alarms into
10 minute alarms.
•LIGHT ALARM
Detects the first sign of light.
•WOX
A whistle-ON, whistle-OFF switch. •PHONE ALERT
Detects one or two phones on the line.
•EARWIG
An FM bug in a matchbox.
MOTOR SPEED CONTROLLER
Slows down any tape recorder
BUG NOTEBOOK
Notes and ideas on bugs.
$1600 BUG NETS $68,000
A cutting sent in by a reader. note the
double adaptor. It looks very much like
one of our double adaptor bugs!
•PEN BUG MkIl
Our improved Pen Bug.
•SCORPION
Promotional article on our Scorpion
phone transmitter.
•SECURITY DEVICES
A description of all our Security Devices.
Price List of Security Devices.
THE MICRO CHIP SAGA

•PROJECT TO BUILD

Smart Security Devices Book 1
$24.95
B-SSD1

CONTENTS
ALARM ORDER FORM
•BATTERY BACKED POWER SUPPLY
•A 700mA power supply with battery back-up
•BATTERY BACKED SIREN
Drives I horn speaker or up to 4 piezo tweeters with battery back-up feature
BUGGING HYPE
Article
COMPLETE LIST OF TE KITS
•CURRENT SENSOR
connects tip to 6 smoke detectors to any alarm
DIGITAL ELECTRONICS CORRESPONDENCE SCHOOL
Learn digital electronics at home with a 6 lesson course
OMNISOFT PUBLIC DOMAIN ORDER FORM OVERALL VIEW OF ALARM MODULES
2-page spread showing how to connect the modules together
•REMOTE KEYPAD MODULE
Connect this keypad module to your alarm
•SECURITY DEVICES
made up devices
•VOYAGER MkIl
An up-date article Has air trimmer to adjust the frequency of transmission
•VOX MkV
our surface-mount voice-operated bug
•3-INPUT ALARM MODULE
This is the heart of our alarm system
•4-SECTOR INPUT MODULE
Protect the wiring between the alarm panel and the sensors with this module

•PROJECT TO BUILD

Talking Electronics Issue 1
$5.40
B-TE1

CONTENTS
Art of Sweeping
•Capacitor Discharge Unit
•Car Tracker
•Combo-2
Data Sheets
•Experimenter Board
•Experimenter Deck
•Explorer MkII
History of Talking Electronics
•LED Flasher
•LED Zeppelin
•Mini Piezo Siren
Order Form
Security Devices
Servicing
Test Yourself
Transistor Page
10 Minute Digital Course
(horn the book Digital Electronics REVEALED)

•PROJECT TO BUILD

Talking Electronics Publications

14 FM Bugs to Build $24.95 B-14FM	CONTENTS All the kits produced by Talking Electronics MAGAZINES and ORDER FORM Update of our most popular IBM Public Domain titles •HIKERS ALARM For use in emergencies. Has beep and audio Range 1km •VOX BUG MkIV Voice activated FM transmitter with 800m range and homing beep during "listening" •WALL BUG An FM bug that listens through glass etc Range 400m •PEN BUG MkIII An FM bug concealed in a pen Range 10 metres	•VOYAGER MkIl An FM bug that fits on top of a 9v battery Range 800m •WAT ER BUG An FM bug that senses water and transmits up to 1km •THE CRICKET Transmits a constant tone Range 100m •VOX MkV Our Surface-Mount version of VOX •MkIV •FIELD STRENGTH METER Measures the output of our FM transmitters SECURITY DEVICES Full range of built-up Security Devices from TE •PROJECT TO BUILD

5 More FM Bugs $5.40 B-5MFM	CONTENTS List of FM Transmitters It's magic •The Wasp The 'Q' Factor •Crystal Beep Bug •Crystal Locked FM Bug •Beetle MkIll Quotations •Car Tracker Money Money Money •FM Radio Price List Order Form •Voyager MkII •VOX MkIV •VOX MkV •PROJECT TO BUILD

SIX BD679 Projects $5.40 B-6BD	CONTENTS Fixing A Project •Capacitor Discharge Unit MkIl •Automatic AA Nicad Charger •Screamer Siren •Battery Backed Siren How A BD 679 Transistor Works •20w Fluorescent Inverter Iiving With 12v •2-Amp Power Supply •Breakdown Beacon •RD 679 Output Module •Courtesy Light Extender •Micro-Comp Computer •Noughts & Crosses •PROJECT TO BUILD

CMOS Data Book $9.20 B-CDB1

Cover Projects $6.00 B-CP1	CONTENTS •MINI FREQUENCY COUNTER •SQUARE WAVE OSCILLATOR •DIGITAL FREQUENCY METER •LOGIC DESIGNER •DUAL TRACKING POWER SUPPLY •HANGMAN •STEREO VU METER •LED VOLTMETER •TE CLOCK •LOTTO NUMBER SELECTOR •TE LOGIC PROBE •KEN'S DUAL POWER SUPPLY •FM BUG •LED DICE •PROJECT TO BUILD

Digital Electronics Revealed $7.20 B-DER1

Electronics For Model Railways 1 $5.40 B-EMR1	CONTENTS •Air Horn •Capacitor Discharge Computers •Crossing Boom Control •Crossing Expansion •Crossing Sound •Dedicated Microcomputer •Fluorescent Simulator •Hex Train Sensors •LED resistors •Level Crossing •Light Chasers & Shop Displays •Light Sequencer •Pedestrian Crossing •Power Supply •Remote Relay Unit •Rotating Lights	•Scale Fluorescent Lamps •Searchlight Adaptor •Shop Display Driver •Shop Display PC board Street Signs Three Colored LEDs •Throttle •Train Detector •Warning Lamp Unit •PROJECT TO BUILD

Electronics For Model Railways 2 $5.75 B-EMR2	CONTENTS •Level Crossing Lights •Economy Power Supply •Signals •Tunnel Stretcher & Station Signal Computers and Model Railways •Delay Module •Walk-Around Throttle •Servo Driver •Diesel Sound Generators •Simple PWM Throttle •Fibre Optics Trees Data •PROJECT TO BUILD

Electronics Notebook 1 Starting in TTL $7.20 B-EN1	CONTENTS •BUILDING THE TRAINER MODIFICATIONS TO PC CIRCUIT DIAGRAM HOW THE CIRCUIT WORKS BEFORE YOU START SUMMARY OF GATES ALL THE COMBINATIONS THE LED AS AN INDICATOR FACTS ABOUT A LED THE BUFFER THE INVERTER THE AND GATE THE NAND GATE THE INHIBITED NAND GATE THE ENABLED NAND GATE GATING A SIGNAL THE OR GATE THE NOR GATE THE XOR GATE	THE DATA SELECTOR THE LINE SELECTOR SUMMARY OF GATES SEQUENTIAL LOGIC THE ASTABLE MULTIVIBRATOR THE MONOSTABLE MULTIVIBRATOR THE BISTABLE MULTIVIBRATOR THE R-S FLIP FLOP THE R-S FLIP FLOP AS A WAVE SHAPER THE GATED (CLOCKED) FLIP FLOP THE D FLIP FLOP THE J-K FLIP FLOP THE 4 FLIP FLOP MODES THE 4 J-K FLIP FLOP MODES THE RIPPLE COUNTER MODULO-10 RIPPLE COUNTER THE SHIFT REGISTER INDEX

Electronics Notebook 2 $6.00 B-EN2	CONTENTS TALKING ELECTRONICS 120 YEARS OF THE TELEPHONE MAKING YOUR OWN PC BOARDS CURRENT LIMIT RESISTOR REPLACING PNP TRANSISTORS TOUCH SWITCH SUPER ALPHA PAIR THE DRY CELL DECEPTION MEL-12 PHOTO DARLINGTON SPEEDING UP A MULTIVIBRATOR TWO OSCILLATORS TO AVOID A 90MHz TRANSMITTER THE PHASE SHIFT OSCILLATOR TOUCH SWITCH DESIGN VALUES THE COUPLING CAPACITOR MOTOR BOATING BATTERY DECOUPLING THE LOAD RESISTOR COMBINING STAGES PUSH PULL TURN-ON VOLTAGE TOUCH FLIP-FLOP	SUPER ALPHA CIRCUITS MAKING YOUR OWN ZENER DIODE SUPER ZENER GATING WITH DIODES THE OR GATE SIX DIODES GATES CHIPS PIN NAMES GATES USING GATES THE AND GATE INTERFACING THE INPUT SIGNAL THE TRANSISTOR STAGE THE RESET LINE MURPHY'S LAW THE INVENTION OF NOTHING TREE CARTOON THE ELECTRET MICROPHONE SIREN ARTICLE HOW A MOBILE WORKS THE TANK CIRCUIT TEST INDEX

Electronics Notebook 3 $6.00 B-EN3	CONTENTS 'n' VALUES, 1% RESISTORS HOW TO SOLDER HOW A TRANSISTOR WORKS THE TRANSISTOR TRANSISTOR STAIRCASE SURFACE MOUNTING THE BRIDGE RECTIFIER POWER SUPPLY FACTS VOLTAGE MULTIPLICATION WHY DIODES FAIL THE ZENER HIGH IMPEDANCE LINES AUTOMATIC RESET THE SCHMITT TRIGGER GATING THE SCHMITT TRIGGER THE CRO SETTING UP THE CRO READING WAVEFORMS THE TRIGGER PULSE LOCATING A FAULT IN A DISPLAY USING A LOGIC PROBE IS IT HIGH? EXPERIMENTING FURTHER THE COMPUTER	WHAT A COMPUTER WILL DO COMPUTER CIRCUIT THE INPUT GATING TRANSISTOR THE OUTPUT GATING TRANSISTOR THE Z-80 CPU WHAT'S INSIDE THE Z-80 Z-80 CPU CPU REGISTER SET THE ACCUMULATOR Z-80 HOW IT WORKS THE 2716 EPROM Z-80 HOW IT WORKS BITS, BITES & NIBBLES WRITING A PROGRAM TO BLINK THE DISPLAY TO INCREMENT THE DISPLAY 0 - 9 COUNTER DJNZ TEST DICTIONARY OF TERMS Z-80 MACHINE CODES for assembly Z-80 MACHINE CODES for disassembly

Electronics Notebook 4 $6.00 B-EN4	CONTENTS IDENTIFYING SYMBOLS ETC Quiz # 1 SOLDERING PROTOTYPING HEATSINKING THE AIR GAP HOW TO 'READ' A FUSE DANGER! THE CAPACITOR 'n' VALUES FREE ENERGY USING A CRO THE FIRST IC OHMs LAW EMERGENCY ALARM THE INDUCTOR CONSTANT CURRENT THE THYRISTOR QUIZMASTER THE TRIAC THE PHONE LINE A BUG ON THE LINE NEGATIVE LOGIC	HOW A DELAY CIRCUIT WORKS HOW MANY MILLIAMPS? HOW MANY AMPS? HOW A ZENER DIODE WORKS A LOW POWER 5v REGULATOR CREATING A NEGATIVE RAIL WHY THE REGULATOR GOT HOT PRE-REGULATOR MULTIPLEXING A DISPLAY SCAN PROGRAM BOOLEAN ALGEBRA HOW A PEN WATCH WORKS THE PIEZO DIAPHRAGM A BRIDGE DRIVER REPLACING A 556 WITH TWO 555's D FLIP-FLOP MULTIVIBRATOR IS THIS TRANSISTOR TURNED ON? MOTOR CONTROLLER THE NON-INDUCTIVE LOAD REDUCING INDUCTIVE SPIKES THE CHAIN LETTER INDEX

Electronics Notebook 5 $6.00 B-EN5	CONTENTS STARTING OUT READING RESISTORS RESISTOR COLOUR CODE RESISTORS LESS THAN 10R SURFACE MOUNT RESISTORS CAPACITORS SURFACE MOUNT CAPACITORS THE ELECTROLYTIC THE DIODE DIODE PROBLEMS TRANSISTORS SUBSTITUTING A TRANSISTOR THE FUSIBLE RESISTOR HOW A TRANSISTOR WORKS TESTING TRANSISTORS	STAGE GAIN THE CRO MAXIMUM FREQUENCY COMPARING CRO'S CRO HINTS USING A CRO TO FIX A 27MHz TOY GETTING YOUR BEC ELECTRICAL PRINCIPLES EXAM ANSWERS ANALOGUE ELECTRONICS EXAM ANSWERS DIGITAL ELECTRONICS EXAM ANSWERS INDEX •PROJECT TO BUILD

Electronics Notebook 6 $6.00 B-EN6	CONTENTS •COMBO-2 transistor Tester Hfe ADD ON CAPACITANCE METER CAPACITOR CODES COMPONENTS IN SERIES & PARALLEL THE TIME HAS COME •FIELD STRENGTH METER MKI GETTING INTO BUGGING •FIELD STRENGTH METER MkII SUBSTITUTING TRANSISTORS •LOGIC PROBE MkIIB •CONTINUITY TESTER A SHEEP IN WOLF'S CLOTHING THE POSITIVE APPROACH A HIGH GAIN STAGE TRI-STATE •PHONE RING	USING A LOGIC PROBE HOW A CAPACITOR WORKS TRUTH TABLE QUIZ •TTL DICE UNDERSTANDING A CIRCUIT DIAGRAM STARTING IN TTL SYMBOLS QUIZ CROSSWORD NO 3 10 TESTS 10 TEST I IMPROVING YOUR 10 MORE PUZZLES GLOSSARY OF TERMS INDEX: for Notebooks I - 6 •PROJECT TO BUILD

Learning Electronics Book 1 $5.40 B-LE1	CONTENTS BATTERIES RESISTORS THE LED •3v - 15v TESTER •THE INFURIATOR •NIM •MINEFIELD THE CAPACITOR THE DIODE •2-WAY SIGNAL PUZZLE THE TRANSISTOR THE FIRST TRANSISTOR •THE SUPER TRANSISTOR •CONTINUITY TESTER •LIE DETECTOR •TOUCH SWITCH •TILT ALARM •AUDIBLE CONTINUITY TESTER •ROBOT MAN	THE MULTIVIBRATOR •SIMPLE SIREN 4 FLASHING LED NOTES ON MATRIX BOARD •STRENGTH METER REVISION CROSSWORD •TEMPERATURE METER OHM'S LAW Chap 7 THE PHOTO TRANSISTOR •4-DIGIT COUNTER Chap 8 THE AUDIO AMPLIFIER •EARWIG DIGITAL ELECTRONICS •TTL TRAINER DECK •CO-ORDINATOR FINAL TEST INDEX •PROJECT TO BUILD

Learning Electronics Book 2 $5.50 B-LE2	CONTENTS THE POWER SUPPLY •PLUG PACK REGULATOR QUICK QUIZ I BIASING BOOK REVIEW •LOGIC PROBE MkIIB ABOUT THE TEC-1C COMPUTER •CONTINUITY TESTER THE ANTENNA •GLOW PLUG POWER SUPPLY FAULT FINDING •INTERCOM ANALYSIS of Continuity Tester THE PANEL METER THE VOLTAGE DIVIDER POWER ELECTRONICS LETTERS THE 555	•SQUARE WAVE OSCILLATOR •COIN FLIPPER USING PROTOTYPE BOARDS THE SCHMITT TRIGGER •OP-AMP TRAINER More on POWER ELECTRONICS •VOX MK IV with BEEP REPAIRING TRANSISTOR RADIOS •2-CHIP AM RADIO WHERE TO FROM HERE? KITS KITS KITS CIRCUIT SYMBOLS TEST 1 SYMBOLS QUIZ INDEX TO LEARNING ELECTRONICS # 1 and 2 •PROJECT TO BUILD

Security Devices B-SD1 OUT OF PRINT	CONTENTS EDITORIAL •SPY BUG Our fully surface-mount 100m bug. MY COMMENT •FIELD STRENGTH METER A piece of test equipment to test the output power of a transmitter. MORE FROM TOM •ULTIMA Our 1km bug. PUBLIC DOMAIN SOFTWARE FM RADIO An FM radio using a TDA 7000 chip. •BEEPER BUG A beeping bug that helps you find things. Kit price list Order Form and Magazine prices. INSIDE TALKING ELECTRONICS LETTERS •10 MINUTE TIMER A timer to convert old-style alarms into 10 minute alarms. •LIGHT ALARM Detects the first sign of light. •WOX A whistle-ON, whistle-OFF switch.	•PHONE ALERT Detects one or two phones on the line. •EARWIG An FM bug in a matchbox. MOTOR SPEED CONTROLLER Slows down any tape recorder BUG NOTEBOOK Notes and ideas on bugs. $1600 BUG NETS $68,000 A cutting sent in by a reader. note the double adaptor. It looks very much like one of our double adaptor bugs! •PEN BUG MkIl Our improved Pen Bug. •SCORPION Promotional article on our Scorpion phone transmitter. •SECURITY DEVICES A description of all our Security Devices. Price List of Security Devices. THE MICRO CHIP SAGA •PROJECT TO BUILD

Smart Security Devices Book 1 $24.95 B-SSD1	CONTENTS ALARM ORDER FORM •BATTERY BACKED POWER SUPPLY •A 700mA power supply with battery back-up •BATTERY BACKED SIREN Drives I horn speaker or up to 4 piezo tweeters with battery back-up feature BUGGING HYPE Article COMPLETE LIST OF TE KITS •CURRENT SENSOR connects tip to 6 smoke detectors to any alarm DIGITAL ELECTRONICS CORRESPONDENCE SCHOOL Learn digital electronics at home with a 6 lesson course OMNISOFT PUBLIC DOMAIN ORDER FORM	OVERALL VIEW OF ALARM MODULES 2-page spread showing how to connect the modules together •REMOTE KEYPAD MODULE Connect this keypad module to your alarm •SECURITY DEVICES made up devices •VOYAGER MkIl An up-date article Has air trimmer to adjust the frequency of transmission •VOX MkV our surface-mount voice-operated bug •3-INPUT ALARM MODULE This is the heart of our alarm system •4-SECTOR INPUT MODULE Protect the wiring between the alarm panel and the sensors with this module •PROJECT TO BUILD

Talking Electronics Issue 1 $5.40 B-TE1	CONTENTS Art of Sweeping •Capacitor Discharge Unit •Car Tracker •Combo-2 Data Sheets •Experimenter Board •Experimenter Deck •Explorer MkII History of Talking Electronics •LED Flasher •LED Zeppelin •Mini Piezo Siren Order Form Security Devices Servicing Test Yourself Transistor Page 10 Minute Digital Course (horn the book Digital Electronics REVEALED) •PROJECT TO BUILD