Remote Battery Light Switch Control, 16 Lamp Dimmable Usb Touch Lamps With 3d Color Insert, 数量限定 Led 3D Lamps with Remote Control, LED Lamp 16 Color Light Dimmable Stitch LED 3D Night Light Has 16 ...

I’ve also treated the topic of LED illumination more conceptually; take, for example, this piece from more than seven years ago that analyzed LED and CFL light bulbs as potential successors to ...

When the power goes out, scrambling for a flashlight can be frustrating. Light bulbs with backup batteries solve this by providing light even during an outage. These innovative bulbs charge their ...

Illuminating more than one very bright white LED requires a choice of configuration, either series or parallel. Of course, each configuration has design tradeoffs. A parallel connection requires a ...

My day has finally come. Years ago, I took some heat for my stand against CFL lights, which I detest. It was very ungreen of me, I admit. But I spoke my mind in this column, and also on the NBC ...

[Henryk] just sent us his latest episode of simple LED circuit puzzles. In front of the camera he solders one pin of each of the 3 LEDs to a different switch. He then puts the three assemblies in his ...