Building simple circuits with copper tape, LED bulbs, resistors, and watch batteries is not as simple as you might think. Notre Dame Elementary School STEM students are putting the engineering ...

This shows what the previous circuit diagram describes: a battery connected to two bulbs and a switch. This is not a circuit diagram.

As electronics engineer I have a mental collection of circuits that I’ve gathered over the years, much like a mechanic collects specialized tools as they work. All engineers do this and the ...

Shortly after the development of the electric light came the light switch, presumably. Of course, obvious switches are old-hat, and this neat lamp build from [Giovanni Aggiustatutto] goes with a de… ...

(LEDs don't use filaments or gas to make light, but semiconductor circuit chips, so they last for years.) I had the electrician swap out every bulb in the house that wasn't already an LED.