I bought my first LED flashlight almost eight years ago. It was a handy keychain with a button-cell battery. Ever since, LED flashlights have advanced a lot and current models have brighter lights using more LEDs.
Light-emitting diodes or LEDs are solid-state transistors which glow when electricity passes through them. But unlike incandescent bulbs, it has no filaments, and no bulbs. It doesn’t burn, nor produce much heat. And best of all, it consumes a small amount of power.
The small wattage makes the best LED flashlight a very interesting proposition. It doesn’t need a large energy source to create light and it doesn’t create lots of heat either. And since it’s a single diode, it has a long life span.
Although common LEDs come in all colors, the LEDs used in flashlights tend toward a bluish tinge. This is not really a obstacle to having a bright flashlight. In fact, there are now small projectors which have LEDs for the lighting element.
The titanium LED flashlight come in different sizes. There are the cell phone models which are smaller than a thumb, with larger lamps using banks of LEDs. Using multiple LEDs, the size of a lamps can be as large as any normal flashlight, with a variety of designs. There was even a flashlight which make use a circular array of LEDs for a flashlight lamp complete with reflector unit, which included a rectangular bank on the side but without the reflector unit. This could come in handy as a reading lamp, replacing portable battery powered fluorescent bulbs.
