When consider of buying a flashlight, you must compare any features to make the right decision. high brightness, low power consumption, long life, small size and other characteristics are ideal features for portable flashlight. Below, are the most popular flashlights in the market. By compared with the disadvantage and advantage of those flashlights, we will be more clear will one will be best fits our needs.
Incandescent flashlights:These flashlights have been around the longest and are often the least expensive. The lamp produced is usually bright, but this type of light wastes energy by producing heat. Because incandescent bulbs require a lot of power, flashlights with this type of bulb must have their batteries replaced often.
LED flashlight: Light-emitting diodes are a type of semiconductor. LED flashlights have a long life because they waste very little energy making heat. LED flashlights have no glass or filament, making them very durable. Both the batteries and the bulbs in LED lamps have a much longer life than incandescent bulb flashlights, but this may require a higher initial cost. Originally only available in colored lights, LED flashlights are now available in a “white” light (which is actually more of a bluish light). Many people find this light to be very natural, while others are more used to the yellow light of electric lights.
HID flashlights : HID lamps produce more light than an incandescent flashlight using the same amount of electricity. The lamp will last longer and is more shock resistant than a regular incandescent bulb, since it lacks the relatively fragile electrical filament found in incandescent bulbs. However, they are much more expensive, due to the ballast circuit required to start and operate the lamp. An HID lamp requires a short warm-up time before it reaches full output.
A typical HID flashlight would have a 35 watt lamp and produce more than 3000 lumens.
Key-ring flashlights Most of the key-ring flashlights are weigh less than an ounce and can also fit easily in a pocket — fine for finding a keyhole or reading a map. Most are just barely bright enough to light your path, and get much dimmer long before the LED bulb gives up.
To be a smart buyer, bear in mind that get any necessary information you could before purchase.