I bought my first LED flashlight nearly ten years ago. It was a handy keychain powered by a button-cell battery. Since that time, LED flashlights have evolved and current models have brighter lights with more LEDs. Light-emitting diodes or LEDs are solid-state transistors which give off light when electricity passes through them. However unlike incandescent [...]
I bought my first LED flashlight nearly ten years ago. It was a handy keychain powered by a button-cell battery. Since that time, LED flashlights have evolved and current models have brighter lights with more LEDs.
Light-emitting diodes or LEDs are solid-state transistors which give off light when electricity passes through them. However unlike incandescent lamps, there are no filaments, and no bulbs. It doesn’t burn, nor produce much heat. And best of all, it consumes a tiny amount of power.
The small energy footprint makes the best LED flashlight a very green approach. It doesn’t need a large battery to generate light and it doesn’t create lots of heat either. And since it’s a single piece, it has a long life span.
Although regular LEDs come in a variety colors, the LEDs used in flashlights tend to have a bluish tinge. This is not really a hindrance to having a bright flashlight. In fact, there are now small projectors which use LEDs for the lighting element.
The titanium LED torch come in an array of sizes. There are the keychain models which are smaller than a hand, with larger lamps using arrays of LEDs. Using arrays LEDs, the size of a flashlights can be as large as any common flashlight, with any number of designs. There was even one design which has a circular field of LEDs for a flashlight bulb complete with reflector unit, which also had a rectangular bank on the side but without the reflector unit. This could come in handy when outdoors, replacing portable battery powered fluorescent bulbs.
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