Projects

Articles
Title
Who is the fastest? (ART052E)
Touch Switch (ART051E)
Junkebox Multiple Power Supply (ART049E)
Mini Audio Booster (ART048E)
Light Beam Remote Control (ART047E)
Light Activated Switch (ART046E)
Photo-Transistor and LDR (ART045E)
30 to 60 MHz Oscillator (ART044E)
10.7 MHz Oscillator (ART043E)
Experimental Hartley Oscillator (ART040E)
Experimenting With Electromagnetic Induction (ART039E)
Build a Simple Buzzer (ART037E)
An Experimental Transformer (ART036E)
Dark-Activated Flasher (ART035E)
Pulsed-Tone Timer (ART034E)
Under-Temperature Relay (ART030E)
Variable Duty Cycle Incandescent Lamp Flasher (ART029E)
The NTC and the PTC – How they work (ART026E)

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12 to 35 V Converter (CB6575E)
This circuit is from a 1968 Electronic Design. The circuit uses transistors of the time that can...
Sound effects generator (CB8448E)
Found in an 1989 R-E Experimenters Handbook, this circuit produces several sound effects that can...
Infrared people detector (CB7022E)
This circuit was obtained from Radio Electronics from the 90s. The infrared sensor is of an...