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A led desk lamp always zi zi ring is how to return a responsibility?
- Poor contact After a long time aging.Poor contact After a long time agings
How long will leds last?
- Lifetime of the LED is very long, but the service life of LED bulbs will see the quality of power supply board, power board quality is bad life is short, LED lights have tens to hundreds of yuan, suggest to buy a real good quality, long service life.s
What is the battery charging led lamps use
- We talk about the LED bulbs for first, namely light-emitting diodes (leds), the working voltage of it around 1 v, current dozens of ma can light it, this is also the characteristics of it can save electricity, because the LED working voltage is very low, if you wait until dark light bulb, it shows that the battery has been severely deficient electric (that's Achilles' heel of the battery). And as the power of its work the most time is also hundreds of ma maintenance-free lead-acid battery, you should say ten dollars, it is this), if is lead-acid batteries, will be added in time, only under the condition of the battery voltage and current saturated plate vulcanizing speed of the slowest, keep up with a three to five years is no problem. If your battery is lithium electricity or nickel, head a few times when the electricity again after filling completely (this is to activate the various chemicals inside), the time is 15 hours (around 500 ma charger) the following 14 hours, in use process (charger during normal use 200-300 ma, charging time of 8 hours) it is best not to let it lose the electricity charge again, li-ion battery and nickel electric prone to memory, long battery capacity will be more and more small, the last rush is full, one with no phenomenon, that is the life of the battery the end of the walk.s
The LED lamp how to realize the function of adjustable brightness and color temperature?
- Dimming color LED to absorb dome light, it is within 2 the output of the road. All the way to warm light color temperature (3000 k), all the way to cold light (white, around 7000 k color temperature). Each is independent of all the way. By giving each different brightness, all the way to the whole lamp color temperature adjustment and brightness adjustment. For example, A road is warm light, color temperature 3000 k, but only 10% of the full bright, brightness and B road is cold light, brightness is only 40% of the full bright, so, blending the color temperature in light body may be only 5000 k (there was A little warm white is not very cold, white). That is to say, the real dimming color can calibrate the brightness and color adjustments.s
Elementary school students with what kind of table lamp is the best? The LED lamp?
- From the perspective of the characteristics of the LED light source which has: no stroboscopic (traditional lamps and lanterns is constantly flickering just frequency are thought not to come out, this is a big damage for eyes) with the effect of eye protection, no pollution, long life, environmental protection, etc.; So it is recommended to use the LED desk lamp, but pay more attention when the choice, now LED market is chaotic quality time not neat, so when the choice is to pay more attention to the strength of LED desk lamp seller to ensure his quality and after-sale, 2 it is to see the buyer on his evaluation, 3 it is to see a few with power LED lamp price, the price is too low, not to buy. The hope can help yous
Hurry, common desk lamp is ac or dc output, and energy saving LED lamp?
- The output ac socket After the transformer voltage between 8 v 10 v 20 v ranging from energy-saving led equivalents
LED lamp stroboscopic serious, can you tell me the reason?
- Apparently driven problem, your LED desk lamp is the 220 ac mains voltage rectifier, stroboscopic than incandescent bulbs.s
How many watts of LED3 is equal to the ordinary energy-saving lamps
- Led3 tile, led3 tile how bright, 11 w energy-saving lamp is equivalent to, energy-saving lamp wattage, how many watts of energy saving lamps, energy-saving lamps how many watts, 3 w energy-saving lamps, energy-saving lamps, how many tile home how many tile energy-saving lamps, 13 w energy-saving lamps,s
How do traffic light cameras work
- Traffic light cameras, as the name implies, is the traffic light cameras, of course, not every intersection will be installed. This is to prevent people who do not obey the traffic...
Specifications and details about dimmable led downlight
- A dimmable led downlight company was founded by a group of senior engineers in electronics, structure,thermal dissipation and safety standard. This kind of company is intended to p...
What's led lighting system
- LED Lighting System Integrated LED Garden Wall Light integrates the green-energy parts:High efficiency monocrystalline solar panel, LED light source, PIR motion sensor, Lithium bat...
Why is strobe lights kits important
- Strobe lights kits have many advantages such as 1.600W flash energy2.Perfect guiding number3.Short recycling time4.Long lighting coverage5.High color temperature.6.Quick flash dura...
What's the price of led downlight
- There are many advantages of led downlight.For example,1,Security:LED is supplied by low-voltage power, so it is safer than supplied by high voltage power ,it is particularly appli...