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LED flashlight batteries instead of cell phone batteries
Agree with the upstairs view, LED flashlight battery voltage between 3.7-4.2
How to change LED flashlight to blue light?
1, needs to buy blue light LED lamp diode;2, open the LED flashlight, the original LED diode is removed and replaced with blue LED diodes, connected by soldering solder joint;3, the LED flashlight assembled, press the power test lamp can.
Xenon flashlight and general LED what is the difference?
HID lamp is the third generation light source after halogen lamp and fluorescent lampMetal halide, iodine lamp and rare metal are charged between the electrodesHigh pressure xenon, argon and other inert gases are filled into the quartz glass tubeOur general HID lamps are metal halide lampsXenon headlampsBecause of its high color rendering, the light effect is 80-120LM/WWidely used in theaters, stage factories, automobile lighting, mobile lighting fieldsHID in hot or cool lightThe inert gas in the lamp is still collidingRe ignition trigger requires more than 23000 of the high voltageThe two electrodes can be broken down in the 10NS
What is the structure of a bright flashlight?
The flashlight comprises a luminous body, batteries, circuit, shell, reflective glass, warehouse, circuit switch and other components, the fundamental principle is the current from the battery, then arrived at the circuit and through the circuit to adjust the voltage and current, and then output to the light emitting body, stop lighting.
Flashlight long shots selected focus or zoom well
According to the natural zoom far, far, and bright, I have a flashlight sword wolf Wei buy outdoor, I think the zoom flashlight can be adjusted according to their own needs, is really very good
Skyfire LED flashlight and probe the dew
1. PT40 is a portable high-power XML U2 flashlight, brightness of up to 1000 lumens, the volume of moderate, suitable for military police, search, outdoor, camping and other occasions2. strong endurance to meet your long time lighting demand3. tactical tail switch, easy to operate, beautiful and durable4. specially designed mirror aluminum alloy high efficiency reflector cup, the spot is even and perfect5., the scientific design of the structure, exquisite workmanship, impeccable6. constant current circuit design, brightness constant
What's the use of a bright flashlight driver?
Because if the battery drives LED directly, the voltage and current of the battery will decrease gradually, which will cause the instability of the light.
Hello, what's the working current and the working voltage of a flashlight? If three LED and 4.2V-7500MAH batteries, how long will it last?
Therefore, the output rated power is: 9.9 * 0.3=2.97WAccording to the efficiency of 90% calculation, the minimum input power should be: 3.3WYour battery is: 4.2 x 7.5=31.5WhWorking time: 31.5 hours 3.3=9.54.