What Is an LED Flashlight?

LED flashlight is a new type of flashlight with LED (light emitting diode) as the light source. Because LED has the characteristics of high brightness, low power consumption, long life and small size, it is an ideal choice for portable lighting.

LED flashlight

Atomic electrons have many energy levels. When an electron transitions from a high energy level to a low energy level, the energy of the electron decreases, and the reduced energy is converted into photons and emitted. A lot of these photons are lasers.

How to choose high power LED flashlight (for reference only):

1. The LED has a long service life, which can generally reach more than 50,000 to 100,000 hours, which is 5 to 10 times longer than the traditional tungsten filament lamp.

2, cold light, low heat, will not damage the lamp holder, high safety.

3, fast response, impact resistance, good weather resistance, small size, easy to small and lightweight.

4. Power saving, energy saving, low power consumption, green environmental protection material.

5. The response speed is as fast as 1us (microseconds), no need to warm the lamp to improve safety.

6. Low voltage drive (voltage is 1.8 ~ 4.0V) is safe.

Common LED flashlights are compact keychain type, multi-lamp type, single-lamp high-power type and so on. From the type of power source, some use one AA battery or one AAA battery, some use three AAA batteries, some use three button batteries, and use manual power generation.

1.Compact LED flashlight

The compact LED flashlight refers to a multi-lamp small flashlight with one AA battery or AAA battery, or a pocket flashlight or keychain flashlight with three button batteries. This type of compact LED flashlight also has poor light-gathering effect and large power consumption, but it still has certain practical value in the case of temporary emergency lighting or night viewing in the city, which is not used for a long time. Because this flashlight is not used for a long time, it is often stored for temporary use. Therefore, it is best to use a sealed alkaline battery (usually it can be stored for two to three years without failure).

The flashlight can be damaged by using electrolyte.

Battery Flashlight commonly used batteries are 1AA (1 AA battery)

It is understood that

1 The LED dead light is not on, it is enough to replace the LED, but please note that the ± polarity cannot be reversed.

2 The lead-acid battery is damaged, which can not be charged and discharged, and it can be used only when plugged in.

3 The high-voltage step-down capacitor is damaged, or the rectifier diode is over-voltage damaged, which makes it impossible to charge.At this time, ordinary pointer multimeters can be used to detect and solve the problem.

4 Poor contact or damage of the pull switch cannot be conducted.