Great Light with LED Flashlights
I bought my first LED flashlight nearly ten years ago. It was a small keychain with a button-cell battery. Since that time, LED flashlights have advanced a lot and today’s models have more luminous lights and more LEDs.
Light-emitting diodes or LEDs are solid-state transistors which shine when power passes through them. However unlike incandescent bulbs, there are no filaments, and no bulbs. It doesn’t burn, nor generate much heat. And best of all, it eats up a small amount of power.
The small wattage makes the best LED flashlight a very novel idea. It doesn’t need a large battery to produce light and it doesn’t generate lots of heat either. And since it’s a single diode, it has a long life span.
Although common LEDs come in a variety colors, the LEDs used in flashlights tend toward a bluish tinge. This is not really a impediment to having a bright flashlight. In fact, on sale now small projectors which have LEDs for the lighting element.
The rechargeable LED flash light come in an array of sizes. There are the thumb-sized models which are smaller than a finger, with larger units using banks of LEDs. Using arrays LEDs, the size of a lamps can be as large as any regular flashlight, with a variety of designs. There was even one unit which has a circular array of LEDs for a flashlight lamp complete with reflector unit, which also had a rectangular bank on the side but without the reflector unit. This is great when outdoors, replacing portable battery powered fluorescent lamps.