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FAQ
- LED desk lamp, very bright, when buy later with more and more dark
- Rechargeable table lamp is power off. Perhaps others with bad throw to sell goods pick up on sale. Second hand.
- Are led lamps good for eyes
- Second, from the Angle of the optical to see: Traditional light source, and at the same time issued a red wavelengths of light, you can understand as invisible infrared, the over 780 - nm wavelength radiation can cause damage to the eyes, myopia are mostly indoors for a long time, too much rely on under the traditional lighting light caused by the work and study. And LED light source, mainly is the blue chip inspire yellow phosphor, the wavelength of light in between 380-780 nm, no ultraviolet and infrared light, good LED light source (note is good, you usually see in stores outside does not conform to the mostly, the current domestic exports have all the good) color rendering index greater than 85 (color rendering index, the higher the more close to natural light), have relatively full spectrum, and also is to have the green light at the same time, close to natural light, when you know a lot of treatment of myopia are to see green things, because it is depends on the green light to repair damage to the eyes, at least not add to myopia.
- Home to buy led desk lamp is broken? Can someone fix it?
- Open the lamp plate, with a digital multimeter measure the lamp bead, bad to use soldering iron to remove, in a better LED lights up welding bead, pay attention to is the cathode, reset can! If no suitable LED lamp bead, can use a other LED lamp bead, if you don't have LED lamp bead can be replaced light-emitting diode tube, pay attention to is the cathode. After electrify leds light is so bright before, not as bright as LED lamp bead. Leds can be in other waste circuit board down a phone charger, or in the place such as waste charging treasure, the computer panel, vcD can be on the front panel, ready to do it, will shine again.
- LED lamp base fever is normal
- Some adopts stabilized voltage supply drive leds, regulated power supply power design is critical, no allowance, also get hot. Should be choose the calorific value of the smaller good drive and regulated power supply, is more advantageous.
- Led charging folding desk lamp it can directly plug
- Most can't plugged directly, that kind of desk lamp without charging control circuit, as long as you don't put it down from the socket, I have been to the battery. The lamp general charging about 10 hours, evaporation of charging can lead to lead battery, the electrolyte (dilute sulphuric acid) concentration increases, serious shorten the service life of batteries.
- Students do homework with LED lamp to choose LED strips or LED lamp bead?
- Hello, I'm in LED lamp bead, the LED strips and LED lamp, LED footlights bead do personal suggest you buy LED strips light bead, because the patch lamp bead most of small power lamp bead, better heat dissipation droop ways, LED LED footlights beads Mostly adopts zhonggong rate or high power lamp (does not exclude the use efficiency, photosynthetic efficiency, but the cooling ways than small power, and the most important is, as a desk lamp Eye is very important, high power single star light focused light transmittance is strong, can't compare with patch lamp beads of good, so buy a desk lamp, or select the LED strips lights.
- I charge the battery of LED desk lamp is broken, can put the cell phone battery received above?
- If what also don't know, it's best not to casually pick up. If the battery voltage is different, it's easy to have a problem. Especially if charging voltage is higher than 4.2 V, cell phone lithium ion battery will explode, caught fire.
- LED rechargeable lamps learning how many watts?
- Regular household study led desk lamp 5-6 w, that is using high power led, led rechargeable table lamp is the 20-30 extremely small straw hat head led luminous efficiency, power consumption province, but also greatly droop, life is not long, be in commonly 2 w or so, the new is very bright, after half a year can significantly dimmed, up to 2 years scrap (even if the led hasn't completely extinguished, but the battery is broken, can't charge electricity)
