JANUARY 1968
         I.C. TAPE RECORDER-1 16
COMBOTRON GAME 21
SHAVER ADAPTOR 35
P.E. ANALOGUE COMPUTER-1 36
WHITE NOISE GENERATOR 44
SINE TO SQUARE WAVE CONVERTER 57
NUCLEONICS FOR THE EXPERIMENTER-3 62
INGENUITY UNLIMITED 24
TRANSISTOR CLIP
TAPE STOP FOIL DEVICE
STOPPING MODEL TRAINS
HOLOGRAPHY 28
CROSSWORD PUZZLE 42
DETERMINING VOLTAGE AMPLIFICATION 54
SEMICONDUCTOR BASICS-2 48
CRYSTAL RECEIVER 51
POINTS ARISING 42
ANTI-DAZZLE DRIVING MIRROR
         
         FEBRUARY 1968
         GLISSANDOVIBE 94
MUSICAL INSTRUMENT
P.E. ANALOGUE COMPUTER-2 105
I.C. TAPE RECORDER-2 116
CAR ANTI-THEFT ALARM 139
NUCLEONICS FOR THE EXPERIMENTER-4 113
TRANSISTOR AMPLIFIER DESIGN-1 135
CINE/TAPE SYNC 99
INGENUITY UNLIMITED 102
REVERSE SOUND ON TAPE RECORDER
SCREENWIPER DELAY
CROSSWORD SOLUTION 132
SEMICONDUCTOR BASICS-3 123
TRANSISTORS
TRANSISTOR AUDIO AMPLIFIER 126
SPACEWATCH 131
VENUS IV, MARINER V, SURVEYOR V
         
         MARCH 1968
         RHYTHMIC EFFECTS UNIT 168
IMPACT COUNTER 180
FLUORESCENT CAMPING LIGHT-1 187
P.E. ANALOGUE COMPUTER-3 200
TRANSISTOR AMPLIFIER DESIGN-2 173
POWER AMPLIFIERS
NUCLEONICS FOR THE EXPERIMENTER-5 213
INGENUITY UNLIMITED 184
REED SWITCH BUZZER
STEAM PRESENCE ALARM
SEMICONDUCTOR BASICS-4 194
THERMISTORS
ELECTRONIC THERMOMETER 196
POINTS ARISING 179
SPRING LINE REVERB
WHITE NOISE GENERATOR
MODEL TRAINS CIRCUIT MOD
         
         APRIL 1968
         P.E. HOMECOM INTERCOM 248
REACTALYSER 253
SOUND EFFECTS UNIT 267
WIND AND RAIN SIMULATOR
REGULATED POWER SUPPLY 280
P.E. ANALOGUE COMPUTER-4 289
TRANSISTOR AMPLIFIER DESIGN-3 270
USING THE 2N2926
NUCLEONICS FOR THE EXPERIMENTER-6 285
HEATSINK DESIGN FOR SEMICONDUCTORS 260
SEMICONDUCTOR BASICS-5 272
LIGHT SENSITIVE DEVICES
LIGHT OPERATED SWITCH 274
I.E.E. TECHNICIAN ENGINEERS 256
SPACEWATCH 259
SURVEYOR VII, APOLLO, ATS-3
         
         MAY 1968
         BOAT INTRUDER ALARM 326
TRANSISTOR CURVE TRACER 333
ELECTRONIC CYMBALS 342
P.E. ANALOGUE COMPUTER-5 360
FLUORESCENT CAMPING LIGHT-2 375
NUCLEONICS FOR THE EXPERIMENTER-7 352
TRANSISTOR AMPLIFIER DESlGN-4 347
NEGATIVE FEEDBACK
DENTOPHONICS 372
SEMICONDUCTOR BASICS-6 356
TUNNEL DIODE, INTEGRATED SCREEN TRANSISTOR
FIELD EFFECT TRANSISTOR FET
SILICON CONTROLLED RECTIFIER THYRISTOR
MULTIVIBRATOR 358
         
         JUNE 1968
         RADIO CONTROL SYSTEM FOR MODEL BOATS-1 398
LIGHT OPERATED CAMERA TRIGGER 414
P.E. ANALOGUE COMPUTER-6 429
DRUMMER'S WHOOSH 443
NUCLEONICS FOR THE EXPERIMENTER-8 417
TRANSISTOR AMPLIFIER DESIGN-5 422
NEGATIVE FEEDBACK
BAXANDALL TONE CONTROL
EPOXY RESINS 410
INGENUITY UNLIMITED 420
OSCILLOSCOPE ADDING X AMPLIFIER
WHITE NOISE GENERATORS
POINTS ARISING 409
PTACTICAL TRANSISTOR CIRCUITS
SOUND EFFECTS
FLUORESCENT CAMPING LIGHT
         
         
         JULY 1968
         WAA-WAA PEDAL 470
RADIO CONTROL SYSTEM FOR MODEL BOATS 476
DRILL SPEED CONTROLLER 490
P.E. ANALOGUE COMPUTER-7 500
TRANSISTOR AMPLIFIER DESIGN-6 484
NUCLEONICS FOR THE EXPERIMENTER-9 508
INGENUITY UNLIMITED 489
CINE AND TAPE SYNC IMPROVEMENT
FLIP FLOP SYNC
COLOUR TUBE PRODUCTION 494
         
         AUGUST 1968
         RADIO CONTROL SYSTEM FOR MODEL BOATS-2 546
LOW OHMMETER 556
P.E. ANALOGUE COMPUTER-7 564
MUSICAL DOORBELL 577
LOW CURRENT STANDBY SWITCH 591
EXPERIMENTS WITH SOUND, LIGHT, AND COLOUR-1 571
NUCLEONICS FOR THE EXPERIMENTER 10 583
V.L.F. PHENOMENA 542
INGENUITY UNLIMITED 561
FLUORESCENT CAMPING LIGHT IMPROVEMENT
UNIJUNCTION SCREEN WIPER DELAY
POST OFFICE TOWER 562
         
         SEPTEMBER 1968
         SWITCHED GAIN AMPLIFIER 618
LOW FREQUENCY WHISTLER RECEIVER 625
P.E. ANALOGUE COMPUTER-8 640
DIGITAL CLOCK-1 647
EXPERIMENTS WITH SOUND, LIGHT, AND COLOUR-2 635
BUILDING AROUND AN INTEGRATED CIRCUIT 614
MUSICAL PHASE 630
INGENUITY UNLIMITED 633
ELECTRONIC STORM GENERATOR
         
         OCTOBER 1968
         PICK-UP PRE-AMPLIFIER 688
LIGHT OPERATED SWITCH 699
DIGITAL CLOCK-2 710
P.E. ANALOGUE COMPUTER-9 720
VARI WINDSCREEN WIPER 776
EXPERIMENTS WITH SOUND, LIGHT, AND COLOUR-3 707
MORE ON DENTOPHONICS 703
SIMPLE PHASE 724
LSA DEVICE LIMITED SPACECHARGE ACCUMULATION 733
INGENUITY UNLIMITED 741
SOUND EFFECTS UNIT
ACCURATE LOW VOLTAGE SOURCE
CAR ANT-THEFT ALARM
MAINS LIGHT DISPLAY
PRINTED WIRING BOARD 692
SOLDERING WITHOUT TEARS 693
SPACEWATCH 696
QUASARS, PULSARS
         
         NOVEMBER 1968
         SENSITIVE D.C. VOLTMETER 773
HI FI FET TRANSISTOR MICROPHONE 781
RHYTHM GENERATOR 792
FROST ALARM 803
BIONICS-1 768
EXPERIMENTS WITH SOUND, LIGHT, AND COLOUR-4 804
INGENUITY UNLIMITED 784
PHASE SPEAKER
INFRA-RED COMMUNICATIONS 788
LSA DEVICE 813
         
         DECEMBER 1968
         DOOR CHIME 850
RHYTHM GENERATOR 861
STOCKMARKET GAME 872
SINE WAVE OSCILLATOR 886
FLIP FLOP GAME 897
BIONICS-2 880
TRANSISTOR D.C. FEEDBACK PAIR 853
INGENUITY UNLIMITED 889
CAR LIGHTS ALARM
ELECTRONIC CONTROLLED PUMP
RF TRANSISTOR COMPARISON TESTER
SCREEN WIPER DELAY
TWO-WAY INTERCOM
ELECTRONICS UNDERGROUND 901
SPACEWATCH
POLAR WIND, APOLLO-7, APOLLO-8
APOLLO-9, ZOND-4, ZOND-5

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