Projects

Articles
Title
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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20 V x 100 mA regulator using FET (CB8671E)
Found in an EEE this circuit uses FETs of the time and a bipolar one. Current equivalent...
120 VAC x 120 W Inverter (CB7261E)
Suggested by a 1968 Motorola power semiconductor manual, this circuit uses a special transformer and...
Bubba Oscillator (CB12743E)
Bubba's oscillator, shown in the figure, is another type of phase shift oscillator, but it takes...