LED Flashlight, a Ray of Light in the Darkness
The need for a portable light source can
occur at the most unexpected moment. In such a case it is important to have at
hand a reliable and efficient light, which provides visibility in the dark for
a certain period of time. There are different designs of such devices, among
them the universal and specialized. In recent years, technology lighting
systems are well advanced, so flashlights got new options. Additionally,
manufacturers implement a more sophisticated design of light sources and
batteries, which also improves the performance of the product.
Operating parameters are usually expressed
lamps operating characteristics of the light flux. In particular, emit
radiation power which is called lumen (lm). Entry-level models tend to provide
the power potential of the beam in the range of 3 to 5 lumens, and a powerful
flashlight (e.g. MECO
XM-L2) may have indices from 100 to 150 lumens. Another important
characteristic is the voltage that enables operation of the light source. This
value is determined by the power element varies on the average from 1.5 to 4
watts. In addition to the characteristics of the light flux should consider the
data structure. Depending on the purpose of the lamp, it may have special
protection from moisture and high temperature. You should also pay attention to
weight, which usually varies within the limits of 300-400 However, flashlights for
the professional tasks can have a massive structure weighing up to 1 kg.
The most effective and productive today
considered a lantern with a built-in battery. Typically, such devices are
charged from the mains indiscriminately structure. The most common nickel-metal
elements presented in different sizes. They can be replaced at the end of life,
but to match the new component still in power rates. And some rechargeable
flashlights need a Battery Charger (e.g. XTAR
VC4). Most often handmade lantern battery supplied electronic filling
in the form of the aforementioned drivers. This addition allows you to
stabilize the luminous flux, changing also its brightness. Such elements are in
different sizes - from low-power disk batteries to the so-called finger
components AAA format.