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The Led Flashlight is making LED (light emitting diode) as light source of a new type of flashlight. Because Led with high brightness , low power consumption, long life, small size and other characteristics, so it a ideal choice for carry-on lighting .
Shining Theory of LED
Atom electronic have many level, when electronic from a higher level low level to warp, electronic energy was reduced, and reduce the energy is transformed into photon emission out. A large number of these photons is laser.
LED principle similar. But the difference is, the LED and not through the atomic internal electronic leap to change to shine, but through the voltage and the PN junction in LED at both ends, make PN junction form a level itself (in fact, is a series of level), and then in the electronic energy leap to change and produce the photon to shine.
How to choose and buy high power Led Flashlight
1, See the number of led,the quantity should be moderate.The Household Led Flashligh don't use more than 12 pcs of lED, use the battery in 2 ~ 3 quarter for good, Of course, high Power Led Flashlight generally can't reach the number of 12 star.
2,See the welding,the welding should be firm. Each diode is welding connection in the circuit board, if there is virtual welding contact then it will be bad which may cause DianZhu not bright or affect whole to use.
3, See the battery, there are common battery and lithium electricity two kinds, although the lithium electricity for rechargeable battery, but life expectancy is about 2 years, according to actual situation to choose
4,See the brightness, good Led Flashlight has high brightness and slow attenuation.
5,See the light bulb,when the light bulb out of the light, the naked eye is difficult to distinguish between good and bad,you we see can the consistency of light bulb in the light.
6, See the waterproof, good Led Flashlight have waterproof function, the seismic performance is good, resistant to fall. Because it belongs to the electronic products, flashlight front have a circuit board, once the water prone to short circuit, cause damage.
7,See aperture, good Led Flashlight's aperture has a uniform circle, the bad Led Flashlight's aperture flare into yellow and blue two color . When you buy Led Flashlight you should pay attention to the itmes whether has astigmatism phenomenon.
8, See the appearance, can choose al-alloy shell, it's beauty and generous.
1,Led long service life and generally can be up to five to 100000 hours, than traditional tengsten lamp life is 5 ~ 10 times.
2,Cold light, low heat, not damage the lamp holder, high safety.
3 Fast reaction speed, bear the collision, good cold, volume is small, easy small lightweight.
4,Save electricity, energy saving, low power consumption, green environmental protection material.
5 and reaction speed as long as 1 us (us), need warm lamp can improve the safety degree.
6,Low voltage driver (voltage of 1.8 ~ 4.0 V) security.
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