Cool Light with LED Flashlights
Written by Author on April 9th, 2009I owned my first LED flashlight about ten years ago. It was a thumb sized keychain powered by a button-cell battery. Since then, LED flashlights have evolved and current models have shinier lights and more LEDs.
Light-emitting diodes or LEDs are solid-state transistors which shine when power passes through them. However unlike incandescent bulbs, it has no filaments, and no bulbs. It doesn’t burn, nor generate much heat. And best of all, it consumes a minuscule amount of energy.
The small power usage makes the bright LED flashlight a very interesting idea. It doesn’t need a large power source to create light and it doesn’t produce lots of heat either. And since it’s a single piece, it has a long life span.
Although normal LEDs come in a wide range colors, the transistors used in flashlights tend to have a bluish tinge. This is not really a obstacle to having a luminous flashlight. In fact, on sale now small projectors which use LEDs for the lighting element.
The titanium LED torch come in different sizes. There are the keychain models which are smaller than a thumb, with larger lamps using multiple of LEDs. Using multiple LEDs, the size of a lighting unit can be as large as any common flashlight, with a variety of designs. There was even one unit which used a circular group of LEDs for a flashlight torch making the reflector unit, with a rectangular array on the side but without the reflector unit. This would be good when camping, replacing portable battery powered fluorescent lamps.
