36Led Usb Led Reading Light

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Feature

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:The service life of LED lamps and lanterns is true?: General lamp life 50000 hours, mainly depends on the service life of the power drive, the design of the ordinary not so long, but no electrolytic solution can be in fashion now.

Q:The LED fluorescent lamp color temperature probably how many is the best: In addition, need different environment illumination light color is also different. The household environment, for example, if the sitting room with warm white lighting, can appear dark, stuffy, narrow space; Bedroom, bathroom with cold white light, can appear cold and stiff and lack of emotional appeal again. Dining room lighting light color can require the full performance of food color, too slant blue light of cool color, will look stomach-turning dishes

Q:How many watts of 10 square meters of the bedroom with led bulbs Warm white or white: LED bulb specifications now have 3 w, 5 w, 7 w, 9 w is common, like how to buy big brand certainly better brightness, 5 w and close to the original energy-saving lamps 10 w, about half is the province. 10 square room seeing you is what lamps and lanterns, with an estimated 5 w and 7 w enough. Warm white or white look like, do you want to create a warm environment, for example, the preferred warm white, want to feel a little bit bright choice is white.

Q:Energy-saving light bulbs or LED bulb can't use on the dimmer lamp holder?: High quality solutions You can. Dimmer lamp dimming principle, is to use the thyristor (SCR) adjust the conduction Angle, change the alternating current (ac) electricity time to power a light bulb, change in order to achieve the average of the power supply voltage and current, adjust the effect of light intensity. Energy-saving lamps, LED lights, there are the power transformation, all need power supply of alternating current into direct current (dc) first, and then into a high frequency ac (CFL) or dc constant current (leds) to drive a light emitting part.

Q:The LED lamp can change the light bulb: Working voltage is totally different, it is necessary to change the circuit to replace the ordinary lamp; Suggest direct purchase of LED lights to replace more practical and fast, can also practice a maintenance.

Q:LED rechargeable desk lamp the internal rechargeable battery, charging voltage is how old?: Charging voltage high, will affect battery life; But some desk lamp is 6 v or 9 v battery. So it is best to open it, take the battery voltage shall prevail.

Q:Desk lamp with led bulbs or incandescent lamps good: Incandescent lamp: low light efficiency, high energy consumption), ac drive No blue light damage, high color rendering index

Q:Could you tell me how to repair have been flashing led desk lamp open,?: Capacitance is no problem, look at the electrolysis have loose, no is the lamp bead has a problem, you can each lamp bead series alone, you won't be the bad of the series in the flashing

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:What kind of USB power adapter for a LED light source is a USB power supply lamp?: no problem Use the USB power adapter output current are generally in the 500-600 ma. The laptop's USB port to provide 500 ma current. So the USB lamp current is absolutely not more than 500 ma.

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