Q:Cree flashlight lamp which is the best.

The terminal voltage of PN junction constitutes a certain barrier. When the forward bias voltage is applied, the potential barrier decreases, and the majority carrier in the P region and the N region diffuse to each other. Since the electron mobility is much larger than the hole mobility, a large amount of electrons will diffuse into the P region, which will result in the injection of minority carriers into the P region. These electrons are combined with holes in the valence band, and the energy is released in the form of light energy when combined. This is the principle of PN junction luminescence.

Q:What material does the LED flashlight battery contain? Is it a lead-acid battery?

The batteries in ordinary rechargeable flashlights are all lead-acid batteries, and their lifetime is not long due to the lead-acid battery itself

Q:How to transform a regular LED flashlight into a blue light?

To switch to a blue light flashlight, it's easy to change a blue light source. Everything else is the same. I'm a flashlight. If you want to increase the brightness, just increase the current, and nothing else,

Q:LED flashlight to eye harm?

If the eye directly to the eye can not, and light, the eye will spend, there will be a period of time, the eyes are black, and the weight will lead to blindness, permanent blindness, eye damage is very large

Q:Paili de LED flashlight in "180 lumens," what do you mean?

Lumen, a measure of light intensity, refers to a measure of light energy per unit area. Said: paili de LED flashlight can reach 180 lumens, its meaning is in the distance, the flashlight can achieve light intensity. The significance of this indicator is not very large, because if the spotlight is better, the light intensity of the spotlight should be high, otherwise the spotlight will be larger and the light intensity will be lower. It does not represent a true luminance indicator.

Q:LED flashlight and laser flashlight is the same? And why are laser flashlights green and blue, and no white ones?

The principle of luminescence is not the same, not the same type of product

Q:I want to put the flashlight's LED led on the 12V motorcycle. When the rear taillight is used, how can I change the line?

4 series into 1 groups, the voltage is just right, directly connected to the power supply, do not have any original, and if you think the brightness is not enough, you can group parallel. That's what my car 12V power supply does.

Q:LED light resistance, I use flashlight LED lights plus resistors used in the 12V circuit can be used for a long time?

As long as your current limiting resistor is reasonable, it will not be a problem for a few years.

Q:YAGE light LED flashlight input and output voltage and current

If you do not understand very well, you'd better not do it yourself, it will be very troublesome. After the series of lithium batteries, not just find a charger can be charged, and can not be good will explode.The voltage, you see, is written on that battery, usually 6V or 12V.

Q:Bright flashlight, what brand is good? What brands do you have?

Tiger head brand (started in 1921, national protection trademark, Guangdong famous trademark, well-known brand, lighting engineering technology research and development center, Guangzhou tiger lighting technology company)