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Desk lamp good still tube of good to buy LED strips? Search light tube usually can use a few years need to change?
Good light source directivity, on-demand lighting, as an emergency lamp is better. 2, small volume, the LED is basically a small chip is encapsulated in epoxy resin, and so it is very small, very light. 3, intensity of illumination is enough, meet the demand of your general illumination.
The LED lamp can use while charging?
Not necessarily, it depends on the lamp is charge by a dedicated charger (such as mobile phone charger) can charge while using, if is only part of the resistance capacity step-down not simple circuit, it is the basic belongs to the low level constant current source, the average power is not large, while filling with will fill dissatisfaction. But now see how is this, so is filled with good, the life of the battery will be longer.
LED dual-mode folding desk lamp on external what meaning be
Dual mode, it is to point to can use ac and dc two modes of desk lamp power supply. Both external and internal, and ultimately to the LED lamp bead above, must be dc power supply.
Hurry, common desk lamp is ac or dc output, and energy saving LED lamp?
Common desk lamp is communication, voltage 220 v, 12 v in the majority; Most energy-saving LED lamp is a dc output voltage international big brands is 9 v, domestic brands generally 12 v.
Children lamp good choice led lamp is better
Can, LED by natural white light bead (osram), tube made of three primary colors. Starting from protecting eyesight, try not to read for a long time, should have proper rest, look at the distance, eyes
sk next incandescent lamp, led lamps and halogen lamps have what distinction, which better
See you use, such as the most used to painting so you can only choose halogen (trichromatic fluorescent lamps also do, but the color is feeling less). General reading, ordinary fluorescent desk work, more money and don't care about environmental problems can buy dc lamp (dc except inefficient and communication than no advantage, use dc, the polar bear's death also have a credit for you!) . Special care about environmental protection and main for night light use you can use the leds
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.
How to identify what the real eye lamp?
According to statistics, the workers engaged in copy writing and many of the students, many patients are caused by improper use desk lamp of eye myopia. In advocate "energy saving, health, environmental protection" fashion today, LED the desk lamp that shield an eye become the first choice for many consumers buy lamp. x0d Angle LED the desk lamp that shield an eye to consider the desk lamp that shield an eye is the most fundamental essence, is to solve the problem of stroboscopic x0d the desk lamp that shield an eye eye principle of be particular about is adopted to reduce the number of stroboscopic electronic ballasts, 50 hz ac electrical signal can be transformed into stable amplitude of high frequency signal, and thus can reduce the eyes when using affected by light stroboscopic. Electric light source experts of a stroboscopic analysis: light stroboscopic indeed can cause eye discomfort, such as ordinary kept flashing fluorescent lamp generates 100 times per second, cannot adapt to people's eyes, but when the lights flashing the number of times per second increases to a certain extent, imperceptible to the naked eye, the eye will be relatively comfortable. And it cannot fundamentally solve the problem of desk lamp no stroboscopic, and as a LED the desk lamp that shield an eye, using the latest electronic constant-current technology, combined with dc power supply, eliminates the current constantly changing, thus fundamentally eliminating the stroboscopic. x0d with good quality of the lamp that shield an eye light close to natural light x0d