Q:Someone said to 7 w is enough light It does not hurt the eyes But I go to TB, some sellers told me 3 w is enough (equivalent to an incandescent bulb 40 w) don't know that right?? ...... Would like to ask how many watts of LED desk lamp what you buy is good for your eyes? What color temperature in right? Thank you ~

In general, the bright LED lights, the brightness of the 1 watt equivalent to 20 watts incandescent lamp, therefore, used as a table lamp at close range, 3 watt LED lamp brightness should be sufficient. About the color temperature, personally think that as long as you feel comfortable, but the color temperature is too high may feel dazzling, easily tired... Might as well choose between 3500 ~ 6000 ° K.

Q:New LED lamp USES "magnetic -" the voice from time to tome, how to eliminate the noise?

Light impact is not big, but it is defective, shake the mostly transit, it is possible that production process problems. Can change, don't change as I said

Q:Want to buy the university dormitory with plug-in study desk lamp, LED the good good or tubes

Desk lamp tubes are mostly warm color, look more comfortable. And lit a lamp light up an LED to many difficulties, complex circuit, I help students took a few, internal ballast work are good.

Q:Why do some led desk lamp is white light, have a plenty of take a bit of blue?

LED bulbs can change.Parallax is cold light lamp.I hope my answer is useful to you.

Q:General how long LED desk lamp charging full of learning

Additional learning had better not use the led desk lamp is best to use incandescent lamp of desk lamp, led lighting is bad for your eyesight.

Q:General led desk lamp how much a led lamp is usually how many watts

Generally a combination of desk lamp and lighting conditions can choose 3 w - 5 wled ball bubble lamp, high again feel too dazzling,

Q:Desk lamp with led bulbs or incandescent lamps good

LED lights: high light efficiency (energy saving), dc drive, no stroboscopic, blue light composition, rich color temperature, color rendering index relative incandescent bulbs will be lower

Q:The LED lamp how to realize the function of adjustable brightness and color temperature?

Simple dimming can be concatenated in the LED lamp bead loop resistance, change the current, can adjust the brightness, better with adjustable brightness of PWM pulse width adjustment, circuit is more complex. Color temperature seems to be no commonly, by LED lamp bead characteristics (fixed) materials and manufacturing has decided, unable to adjust.

Q:Charging indicator has been on desk lamp, led lamp is not bright after rotary switch

Hello, if you have a multimeter, please measure the lower limit of flow resistance, the lamp easy to burn current-limiting resistor, especially when charging turn on the light. Visual blue that resistance to fire.

Q:LED rechargeable lamps didn't work for too long, the result can't shine! How to do?

Damage is unlikely, the LED itself should be rechargeable battery has a problem, it is ok to change the battery.