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FAQ

Explosion proof of LED flashlight
To do explosion-proof, then in accordance with the explosion command to do, but the price is very high, the domestic explosion can do little, you can play the edge ball, in accordance with ordinary lamps to do.
What's the function of LED violet flashlight? Does anybody know that?
The main use of the violet flashlight is to test whether it contains fluorescent agents. Daily can be in the identification of banknotes, check clothes, paper, diapers and other fluorescent agents are included.The brightening and brightening effects of fluorescent agents have been widely used in many fields such as textile, paper making and washing. The relevant national standards also allow manufacturers to add fluorescent agents within the specified range. Parameters of the purple torch is indeed able to detect clothing, paper and other items contain fluorescent agents, but can not determine its content.
Can LED light beads be replaced by ordinary flashlights?
You need to find a diode with a pressure drop, or it will burn the diode if the light is not bright or too bright.LED luminescence principle: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.
How to design a flashlight spotlight with multiple LED lights
Generally speaking, a LED lamp flashlight has two kinds, one is the micro light straw hat LED, lens angle of the LED itself is small, light cup again two is generally not focused, high power LED long, this is each LED within a single small reflector, surrounded by a large reflective cup, cup light but the effect is not very good, so the total effect, while in close range shooting ability is relatively poor brightness good, but not with large caliber single lamp deep LED flashlight than long-range.
LED flashlight MH7303 how to achieve explosive flash function, there are circuits as follows, but that is, can not achieve detonation flash!
Schematics are wrong, the principle is not through, you MH7303 output control of the wrong place, so it can not be controlled! MH8910 wiring is also wrong!
Would you please use the LED of a flashlight with size 5 batteries to make it glow with a No. 3 or 7 ordinary battery?
Use a LED with 5 batteries, and use a 3 or 7 regular battery to make it glow.
Just bought Led flashlight flashlight, 5 hours charging 9 hours of electricity, and now there is no electricity, but the charger shows full power, but it is not bright, what is the matter?
The cap of the lithium ion battery is provided with an explosion proof hole, and when the internal pressure is too large, the explosion-proof hole automatically opens and releases the pressure so as to prevent the explosion.
800LM flashlight, what power LED lights do you need?
In addition to the requirements of the convection value, the design of the flashlight should also have the requirements of light intensity and a certain distance.