Relationship to electrical engineering[edit] Electronics is a subfield within the wider electrical engineering academic subject. An academic degree with a major in electronics engineering can be acquired from some universities, while other universities use electrical engineering as the subject. The term electrical engineer is still used in the academic world to include electronic engineers.
In the old days there was a gizmo that plugged into an outlet that you then plugged your light set into that made the set blink on & off. It's so simple that it isn't made anymore. All I want to do is make an LED light set blink on & off. I don't want computer control.
Why use Christmas lights? They're dirt cheap or maybe even free. After Christmas you can find strings of 100 lights for a couple of bucks or you can find people too lazy to figure out why their lights don't work any more. I haven't bought light bulbs for physics labs in years! Just grab a string of Christmas lights and a pair of wire cutter/strippers and get to work. I also usually create lengths of wire from the strands as well. How Christmas tree lights work: (all these comments apply to the miniature light strings â the larger ânight-lightâ size work entirely differently â they are in a parallel circuit) All the strings plug into standard 120 v AC US electricity