When the chance arrived to buy a mechanical keyboard for not a lot, naturally, [Hales] jumped at it. Then it started having odd intermittent problems with some keys appearing stuck, which led to a … ...

Using this single modified LED he’s able to project a 12″ image that seems quite well-defined (more pictures below). The LED is one he pulled from an old flashlight.

Researchers develop first single-molecule LED Date: February 3, 2014 Source: CNRS Summary: The ultimate challenge in the race to miniaturize light emitting diodes (LED) has now been met ...

The circuit in Figure 1 allows you to light any type of LED from a single cell whose voltage ranges from 1 to 1.5V. This range accommodates alkaline, carbon-zinc, NiCd, or NiMH single cells. The ...

Single LED Light Bulbs. Single LED red light bulbs are available in a number of options. It all depends on which lights you wish to replace. There are options for dome lights, ...

Figure 1 This circuit provides boosted voltage and flashes a white LED from a single cell. To understand how the booster section works, assume that Q 3 is fully on, such that Q 4 's emitter is roughly ...