Small Accent Table Lamps

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FAQ

Use LED lamp plant useful? Useful for which plants, which plants useless?
Use LED lamp plant effect is not obvious. Need a dedicated plant growth lamp. Look from the spectrum (like a rainbow of colors), the closer to the sun, the effect is best. Because the leaves of plants, and the main absorption and LanZiGuang is red light, which is why leaves many green plants. On both ends of the fluorescent lamp with a filament, inside the tubes filled with tiny amounts of argon and the thin mercury vapor, tube coated with fluorescent powder, on the wall between the two filament gas when conducting an ultraviolet, the fluorescent powder making soft visible light.
The LED current problem? LED lamp current problem? Said wanted to plan to buy USB LED lamp to use 5 v voltage current 190 ma computer USB interface as current 500 adapter up to 1 a pick 1 a current
Power supply voltage will not have an impact on power electronics, electrical appliances it needed current from power supply only, will not change because of the size of the power supply current.
LED the desk lamp that shield an eye to choose good warm light or white light is good?
Should choose the warm light, soft and not dazzling.Which is better than the sun warm light
LED the desk lamp that shield an eye eye really?
Since the traditional inductive common fluorescent lamp, there will be a light blinking. Alternating current frequency is 50 hz, so common fluorescent lamp is 50 times per second periodic start-stop, due to the human eye persistence of vision effect and the effect of the fluorescent tube wall afterglow phosphor, normally would not be aware of the light blinking. But in the long-term work under this kind of light source, especially in fine operation, it is easy to produce visual fatigue and with a series of symptoms, namely, commonly known as the "eyes", so before the desk lamp of recommend the use of incandescent lamp it is for this reason. Can be fluorescent characteristics of high relative to the incandescent lamp brightness, save electricity, but can't. With the emergence of electronic ballasts, fluorescent lamp start-stop frequency from 50 hz to several - KHz, greatly reduce the flicker effect, alleviate the occurrence of visual fatigue and even can be used in a high-speed movement of the venues (table tennis, badminton) lighting, visible flicker of already fell to very low, manufacturers take this selling point and with the attractive word "eye", a little fool. Since it is not what is the role that shield an eye really, but reduce the damage to the eyes to the technology of controllable minimum. Lighting white LED, as the breakthrough after blue light LED manufacturing technology in recent years. Due to the LED light emitting diode) is a dc power supply, as long as and qualified drive power match, there is no so-called flashing, says it is "eye" a bit redundant, stir-fried concept. Every brand has a high school low-grade products, cannot treat as the same. In accordance with individual psychological orientation is good. Personal humble opinion, only supplies the reference.
Could you tell me how to repair have been flashing led desk lamp open,?
VIN = AC220 problems should be out in the filter is bad When you look at the output to the lights, voltage stability is not stable If the voltage stability is the filter Suggestions for large electrolytic at least more than 220 uf
How about the LED the lamp that shield an eye, ok
Of course there are good there, than fluorescent lamp is the biggest advantage of no stroboscopic. Buy should pay attention to look at the LED parameters: the first is the color rendering index Ra is more than 85, reduction of color ability. A second look at the desktop illumination, 500-800 Lux, don't be too bright, easy to produce visual fatigue. Third simulation under the child's reading position look have uncomfortable glare. About 4 color WenXuan 4000 k. I hope it can help you!
Children lamp good choice led lamp is better
Light yellow color choice, because yellow is the most natural of incandescent lamp, filament light, an electric current passes through the great filament resistance filament become warm glow. Such light is continuous, no flash frequency. And white light is known as fluorescent lights from energy-saving fluorescent lamp, etc. Energy-saving lamps and fluorescent light stimulate phosphor luminescence principle is to use some kind of radiation, like light is discontinuous, which is a seaside sparkle, but quickly, eyes have a vision for the role of, feel the light in a flash. In such a light for a long time is bad for your eyes.
Led lamp, good point light source or surface light source
Not good surface light source,, the advantage is that the good anyway