Led Battery Table Lamp 5W Dimmable With Smart Touch For Children Students

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Technical Parameters:

Application:

dimmable led reading light , led reading light , led light

For purposes of reading, writing, drawing, design, computer operation, documentation in office, family or other learning places.

Customizing Options

We accept OEM/ODM, Customer's LOGO can be printed on the product and various colors are available.

Delivery:

1. 3-10 business days for Sample Orders; 7-40 business days for Bulk Orders.

2. "Business days" means Monday-Friday, excluding holidays.

3. DHL and UPS cannot ship to military or P.O. boxes address.

4. The Shipping Service above is for reference only, for any other questions, please feel free to contact us.

Q: I want to buy a charging desk lamp, LED lamp brightness seems a bit low, if it is a 13 w the lamp that shield an eye brightness LED small bulb, how many is needed to achieve the same brightness?? Have LED to the eyes good yao I to a charge of desk lamp, thank you: Pro. If an ordinary lamp what LED bulb lamp? At present all the desk lamp of light source (with the lamp body separation) are all common desk lamp, and its applicability is can be replaced any type of light source, including LED, and class integrated light source (lamp and light source not change) in theory the obvious advantages of LED, but in mainland China LED desk lamp is filled with a lot of bad product shoddy, that you might as well buy ordinary, should be relatively common desk lamp is cheap, and the light source is easy to change.

Q: The led lamp low-grade why current sound: The 12 v power supply meet the led light have the cause of the current sound is due to your power supply is provided by the 50 hz ac, and 50 hz transformers, and loose core. If it is a high frequency switching power supply, or dc power supply, is listening to less than 50 hz hum.

Q: LED lamp stroboscopic serious, can you tell me the reason?: Use digital camera LED lights have similar moire interference, should be a digital camera sensor scanning frequency and multiple leds blinking frequency with a certain relationship, lead to no photosensitive sensor some particular locations and appear black stripes. According to the phenomenon that the LED lamp is resistance capacity drive is premature. In general, if the LED lights use resistance capacity device driver, then stroboscopic frequency twice of the ac power frequency, i.e., using flash frequency 50 hz alternating current while the frequency is 100 hz, with 60 hz ac for 120 hz - under the frequency, the human eye or is there a way to identify: the five fingers outstretched rapidly oscillating in the lamplight, if can see "a lot of fingers in the middle of the swing range (shadow), you can judge the LED use the low frequency pulse power supply driver. If the LED is used inverter type constant current power source, then stroboscopic frequency up to 40 ~ 200 KHZ, wiggle the fingers in this light, the human eye of persistence of vision has been unable to form such as "image of guanyin", so it can be the difference between the judgment

Q: Buy the LED desk lamp, what should be pay attention to: Light source is the first priority, and desk lamp selection at this stage mainly incandescent lamp, fluorescent tube, LED, LED due to energy conservation and environmental protection, has become the desk lamp that shield an eye light source of choice.

Q: What are led lamp accessories: USB cable, drive power panel. + 3, rechargeable, rechargeable battery, voltage regulator circuit board (rechargeable).

Q: Long amount of brand of LED desk lamp capacitor charging Fried v100uf 50: Resistance is replaced This desk lamp should be used on the 24 v power supply

Q: Of tubes is said to be good, and some say good leds, which is really good: Tricolor fluorescent light color soft, should be good for the eye eyesight protection. The advantage of leds is save electricity, but light is dazzling. As a desk lamp, there are a dozen of lamp is ok, wattage is too big, is not good for your eyes.

Q: Card lamp, LED desk lamp can take a plane: Card lamp, LED desk lamp can take on the plane Articles carried by plane Total on domestic flights, each person can carry no more than one litre of liquid items, and shall open a bottle of check, certainly can carry. Beyond the parts must be shipped. Alcohol items must be checked.

Q: Desk lamp battery charging why not directly connected light emitting leds, but to a diode, the diode have what effect: Ordinary pressure drop with the silicon diode rectifier is about 0.7 V, the series circuit is higher after the voltage sharing the 0.7 V, so your LED can work properly. Can be a little bit, the pressure drop on the diode wasted energy is 0.7/3.3 = 21, see, there are twenty-one percent of the energy contribute nothing.

Q: Led lamp is broken. Who knows what reason be? How to repair?: Is the light of the serious failure, the main reason is caused by bad heat dissipation and current is too large, broken can't repair, change the wick

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