January 1966
         PIPE AND CABLE LOCATOR 18
ELECTRONIC CANDLE 22
SERVO SYSTEM 31
MECCANO SERVO
MINIPROBE SIGNAL INJECTOR 46
MULTIVIBRATOR IN A CAN
SIMPLE DIGITAL COMPUTER 49
NEON NOVELTIES-S 25
NEON METRONOME
ELECTRONIC BUILDING BLOCKS-1O 28
MULTIVIBRATORS
BEGINNERS START HERE-15 42
RESISTANCE, CAPACITANCE, INDUCTANCE
MODERN COMPUTER SYSTEM 14
INGENUITY UNLIMITED 63
LIGHT FLASHER USING 12AT7 VALVE
REEDSWITCH WATER ALARM
FLASHGUN IMPROVEMENT
HEADS OR TAILS IMPROVEMENT
OC71 TO OCP71
AUDIO TRENDS 26
         
         FEBRUARY 1966
         ELECTRONIC VIBRATO UNIT 93
BURGLAR ALARM 96
PORTABLE RATEMETER 112
COMPACT POWER UNIT 126
EZ81 VALVE POWER SUPPLY
A.F. AND R.F. SIGNAL TRACER 133
NEON NOVELTIES-6 103
NEON WARBLER
ELECTRONIC BUILDING BLOCKS-11 108
THE BINARY SYSTEM, COUNTING, GATES
BEGINNERS START HERE-16 122
HIGH VOLTAGE SMOOTHING
RADIO CONTROL OF MODELS 88
MORE ABOUT DISCS 101
ALLOCATED AMATEUR BANDS
TRADE LITERATURE 119
ELECTRONORAMA 120
NEW PRODUCTS 124
SINCLAIR 12 WATT AMPLIFIER
         
         MARCH 1966
         BONANZA BOARDS 180
SIMPLE PRE-AMP AND TREBLE BOOSTER 182
DRIVER AMPLIFIER 193
WIRING BOARD HOLDER 196
A.M. RADIO TUNER 205
PORTABLE RATEMETER 208
GUITAR PRACTICE ADAPTOR 217
BUILDING BLOCKS-12 189
BEGINNERS START HERE-17 202
NEON NOVELTIES-7 204
PTINTED CIRCUIT TECHNIQUES 168
PRINTED CIRCUITS WITH PHOTOGRAPHIC
- ASSISTANCE 172
RADIO CONTROL OF MODELS 173
AUDIO DENTAL PHENOMENON 184
         
         
         APRIL 1966
         BONANZA BOARDS 250
WIDE RANGE HARMONIC OSCILLATOR AND METRONOME 251
BISTABLE TRIGGER CIRCUIT 253
GUITAR SOUND EFFECTS UNIT 254
BABY ALARM 269
RAIN SENSOR 271
HEATER OR FIRE MONITOR 273
AUTO NIGHTLIGHT 275
REGENERATIVE COINCIDENCE DETECTOR 282
ULTRASONIC SAWTOOTH GENERATOR 283
AUDIO POWER BOOSTER 284
PORTABLE RATEMETER-3 287
ENVELOPE AMPLIFIER 296
VOCAL SOUND EFFECTS UNIT 299
NEON NOVELTIES-8 252
MULTIPURPOSE TESTER
ELECTRONIC BUILDING BLOCKS-13 258
MATHEMATICAL FUNCTIONS
BEGINNERS START HERE-18 280
VALVES
ELECTRONICS AND AUTOMATION IN THE CINEMA 246
RADIO CONTROL OF MODELS 262
         
         MAY 1966
         DIRECTION INDICATOR 326
TRANSISTOR TESTER 329
CAR TACHOMETER 342
L.D.R. PARKING LIGHT 363
ANTI-THEFT ALARM 375
BEGINNERS START HERE-19 360
VALVE OSCILLATOR AND PENDULUM
NEON NOVELTIES-9 367
EXTENDED RANGE VOLTMETER
CLASSIC COMMUNICATION RECEIVERS-HRO 368
ELECTRONICS AND AUTOMATION IN THE CINEMA 335
IMPEDANCE AND NEGATIVE FEEDBACK 346
RADIO CONTROL OF MODELS-4 353
USING TRANSISTOR DATA 365
INGENUITY UNLIMITED 379
SCR BURGLAR ALARM
QUICK ETCHING METHOD
FERRITE CORE PIPE LOCATOR
LIGHT SWITCH LOCATOR
SIMPLE SERVO SYSTEM IMPROVEMENT
STATUS FOR THE TECHNICIAN 370
         
         JUNE 1966
         PHOTOGRAPHIC PROCESS TIMER 410
COMPUTER FOR NlM 413
ELECTRONIC MANDOLIN 420
THYRISTOR DRILL CONTROL UNIT 442
MODIFYING THE P.E. GUITAR AMPLIFIER 452
NEON NOVELTIES-10 419
VOLUME LEVEL INDICATORS
BEGINNERS START HERE-20 436
SEMICONDUCTORS
ELECTRON MICROSCOPES 406
SEEING THROUGH FOG 425
EXPERIMENTS IN LOGIC DESIGN-1 427
INTRODUCTION TO THYRISTORS 438
RADIO CONTROL OF MODELS 446
READOUT 456
CHEAP FUZZ
         
         JULY 1966
         FUZZ BOX 482
STABILISED POWER SUPPLY 485
MICROBUG LOCATOR 497
MICROPHONE MIXER 515
BEGINNERS START HERE-21 512
TRANSISTOR OSCILLATOR
CLASSIC COMMUNICATION RECEIVERS-BC342 518
SUPERCONDUCTIVITY 478
USING TRANSISTOR DATA 491
EXPERIMENTS IN LOGIC DESIGN-2 503
EDITORIAL 477
EAVESDROPPING BUGS
         
         AUGUST 1966
         FLASH GUN 554
BASS BOOSTER 565
A.C. MILLIVOLTMETER 570
BEAM SWITCHING UNIT 588
BEGINNERS START HERE-22 580
USE OF SIGNALS
RADIO ASTRONOMY 550
EXPERIMENTS IN LOGIC DESIGN-3 559
BATTERIES FOR TRANSISTORISED EQUIPMENT 582
INGENUITY UNLIMITED 587
6.6 VOLT PROBE
VARIABLE HT CUT-OUT
         
         SEPTEMBER 1966
         SOLID STATE IGNITION 628
WIDE RANGE SIGNAL GENERATOR 644
MODEL CONTROL TRANSMITTER 654
BEAM SWITCHING UNIT 661
CALCULATION SHORT CUTS-1 649
BEGINNERS START HERE-23 652
TRANSISTOR AMPLIFIER
RAILWAY ELECTRONICS 622
DRY REED SWITCHES 635
INGENUITY UNLIMITED 640
BANDSPREAD VOLTMETER
CAR ALARM
EXPERIMENTS IN LOGIC DESIGN-4 658
MULTIPLICATION
         
         OCTOBER 1966
         MINIBOARDS 702
LIGHT OPERATED SWITCH 703
WIEN BRIDGE OSCILLATOR 707
TIME SWITCH 709
STABILISED POWER SUPPLY 720
DIRECTION INDICATOR 730
TUNED AMPLIFIER 733
PUSH-PULL AMPLIFIER 745
BEGINNERS START HERE-24 727
TRANSDUCERS
CLASSIC COMMUNICATION RECEIVERS-AR88 736
CALCULATION SHORT CUTS-2 738
THUNDERSTORMS 696
EXPERIMENTS IN LOGIC DESIGN-5 712
DISCRIMINATOR
SCREENED TRANSISTORS 717
INGENUITY UNLIMITED 741
TACHOMETER
A.M. TUNER CIRCUIT
ELECTROLYSIS FOR PCBS
         
         NOVEMBER 1966
         MODEL CONTROL RECEIVER 779
THE SQUEALER 782
THE LUMOSTAT DARKROOM EXPOSURE CONTROL 788
(USES VALVES)
SOLID STATE IGNITION 806
THE MIGHT LIGHT 809
CALCULATION SHORT CUTS-3 802
SHIP-TO-SHORE RADIO 774
INGENUITY UNLIMITED 786
SOLID STATE IGNITION IMPROVEMENTS
THYRISTOR SPEED CONTROL
USING THE TEST GEAR TRIO 796
EXPERIMENTS IN LOGIC DESIGN-6 8I2
         
         DECEMBER 1966
         TRAIN CONTROLLER 852
LINEAR SCALE CAPACITANCE METER 868
INTEGRATED STEREO AMPLIFIER-1 873
THE LUMOSTAT DARKROOM EXPOSURE CONTRO 882
THE ELECTRONIC ORGAN-1 848
SHORT CUTS-4 859
D.C. AMPLIFIERS 860
INGENUITY UNLIMITED 889
TREMBLER BURGLAR ALARM
NEON MULTIVIBRATOR
THYRISTOR CONTROL UNIT IMPROVEMENT
SOME NEW SEMICONDUCTOR DEVICES 893
STEP RECOVERY DIODE
HOT CARRIER DIODE
METAL BASE TRANSISTOR
ELECTRONIC ORGAN KIT 898

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