What are the categories of LED flashlights?
A single lamp high power LED flashlight refers to a single LED light emitting torch with a power of 1W~5W. The high-power LED used in the single lamp flashlight is made in China and imported as well. Generally speaking, imported high-power LED light emitting effect is higher, but the price is much higher. The advantage of this single light bulb, high power LED flashlight is that the spotlight is better, but it depends on whether the spotlight is well made. Manufacturing more regular single lamp cap high-power LED flashlight, its spotlight effect close to ordinary flashlight, and brightness is higher.
The number of lamp caps (i.e., LED) ranges from 10 to twenty or thirty, with more than more than 40 lamps. Most of the shell of the torch is made of aluminium alloy. The switch of the torch is set at the tail part, and some are arranged on the side of the front part. The front side switch is more convenient to use. The ignition voltage of high brightness LED about 3V, so the LED flashlight uses three AAA batteries without booster can be directly lit, so the power supply efficiency is high, only a small energy consumption in the current limiting resistor. It should be noted that not the more LED, the better. Qi Jie automotive supplies experts advise, but also pay attention to see if there is a better quality reflector film behind the lamp cover, it can reflect the light scattered by LED, and can improve the brightness of the flashlight 20%~30%. The main disadvantage of the multi burner flashlight is that the focusing effect is not good, and the spotlight effect is not better than that of the ordinary flashlight, so that the light is not bright enough when irradiated on a far distance object.
There are two types of manual charging LED flashlights. One type of flashlight is an active cylindrical magnet that can slide in a coil when it is operated by hand, the coil generates current, and the battery is charged after rectification, and a LED light is lit. The other is the first drives the generator to rotate with the hand pressing flashlight, the flashlight of the lower price, but this kind of power LED flashlight manual most of the reliability is not good.
A compact LED flashlight is a small flashlight with a AA battery or a AAA battery, or a pocket flashlight with three button batteries, or a keychain flashlight. This kind of small size LED flashlight has poor focusing effect and consumes more power, but it is of some practical value when it is not used for long time in the city, such as temporary emergency lighting or night view. This torch due to lack of time, is often stored for temporary use, so it is best to use sealed alkaline battery good (can be stored for two or three years without failure), do not use ordinary carbon batteries, in order to avoid the long time will not damage the flashlight out of electrolyte.
