Practical Electronics

Practical Electronics
January 1973 – Vol. 9, No. 1
Constructional
Biological Amplifier – IC Linear Ohmmeter – PE Piano (5) – PE Digi-Cal (7).
General Features
Ceefax – Designing with ICs (4).
Order: PE7301 – £3.60 inc p&p

February 1973 – Vol. 9, No. 2
Constructional
Biological Amplifier – PE Sound Synthesiser (1) – PE Triffid IC Radio
PE Digi-Cal (8).
General Features
Audio Frequency Discriminator – Designing with ICs (5) – Ingenuity Unlimited.
Order: PE7302 – £3.60 inc p&p
March 1973 – Vol. 9, No. 3
Constructional
Hi Fi Tape Link (1) – PE Digi-Cal (9) – PE Sound Synthesiser (2)
Signal Injector and Tracer.
General Features
Designing with ICs (6) – Electronic Timepieces (1).
Order: PE7303 – £3.60 inc p&p
April 1973 – Vol. 9, No. 4
Constructional
All-Round Security Alarm – Hi Fi Tape Link (2) – Novel Battery Eliminator
PE Digi-Cal (10) – PE Sound Synthesiser (3).
General Features
Designing with ICs (7) – Electronic Timepieces (2).
Order: PE7304 – £3.60 inc p&p
May 1973 – Vol. 9, No. 5
Constructional
Logic Tutor – PE Digi-Cal (11) – PE Sound Synthesiser (4)
Pushbutton Varicap Stereo Tuner.
General Features
Brain X-Ray – Logic Tutor Experiments (1).
Order: PE7305 – £3.60 inc p&p
June 1973 – Vol. 9, No. 6
Constructional
Autotone – Genral Purpose Timer – PE Sound Synthesiser (5)
Wide Range Pulse Generator.
General Features
Ingenuity Unlimited – Logic Experiments (2) – Speech Synthesis
The Transistor and Beyond – The 555 Timer IC.
Order: PE7306 – £3.60 inc p&p
July 1973 – Vol. 9, No. 7
Constructional
Electronic Nose – Lighting Control Unit – PE Sound Synthesiser (6)
Switched Gain Preamplifier – Twin Power Supply.
General Features
Ingenuity Unlimited – Logic Tutor Experiments (3)
New Devices—Applications – 25 Years of Semiconductors (1).
Order: PE7307 – £3.60 inc p&p
August 1973 – Vol. 9, No. 8
Constructional
Audio Compressor – Battle Chess – 550V Megohmmeter
PE Sound Synthesiser (7) – Simple Flasher.
General Features
Ingenuity Unlimited – 25 Years of Semiconductors (2) – Logic Tutor Experiments (4)
New Devices…Applications.
Order: PE7308 – £3.60 inc p&p
September 1973 – Vol. 9, No. 9
Constructional
Audio Logic Probe – Enlarger Exposure Meter & Thermometer
PE Rondo Quadraphonic Sound System (1) – PE Sound Synthesiser (8) – Phasing Unit.
General Features
Ingenuity Unlimited – Logic Tutor Experiments (5)
New Devices—Applications.
Order: PE7309 – £3.60 inc p&p
October 1973 – Vol. 9, No. 10
Constructional
PE Rondo Quadraphonic Sound System (2) – PE Sound Synthesiser (9)
Semiconductor Tester (1) – Wind and Rain Effects.
General Features
Ingenuity Unlimited – Logic Tutor Experiments (6)
New Devices—Applications – Phased Locked Loops (1).
Order: PE7310 – £3.60 inc p&p
November 1973 – Vol. 9, No. 11
Constructional
PE Rondo Quadraphonic Sound System (3) – PE Synthesiser (10)
Semiconductor Tester (2) – Stage Lighting Dimmer.
General Features
Automated Mail – Autumn Quickies (supplement) – Ingenuity Unlimited
Logic Tutor Experiments (7) – New Devices—Applications – Phased Locked Loops (2).
Order: PE7311 – £3.60 inc p&p
December 1973 – Vol. 9, No. 12
Constructional
Party Strobe – PE Rondo Quadraphonic Sound System (4) – PE Sound Synthesiser (11)
9-Volt Battery Eliminator – Voice Operated Fader.
General Features
Ingenuity Unlimited – Logic Tutor Experiments (8) – Phased Locked Loops (3).
Order: PE7312 – £3.60 inc p&p

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