Led Fashion Desk Lamp

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LED Fashion Desk Lamp Specification

Lamp:	HI POWER LED/ 36pcs 3528 EPistar LED(led table lamp)
lamp life time	50000hrs
Color temperature	5500K
Lumen output	100-650LUX 4levels can be adjusted by hand
Bean angle	140D
External power supply	5V 2100MA
polymer lithium ion battery	3.7V 1000MA
Wattage	Max 4W
Size	length384mm,wide 40mm,the diameter of base:84mm
Color rendering index	RA>90
color	white with silver,black with silver
NW	About 745G
Patent No	2012 30065391.7
The switch mode	Touch
Material	Pure Aluminum,ABS

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: Whether the LED desk lamp, luminous points: two guide plate and the patch?: Guide plate is the structure of the desk lamp of a light transmission parts, and not light. The LED lamp are patch.

Q: I'm doing a LED desk lamp, can be through the outside light intensity automatically adjust the brightness of LED, using PWM technology, how to do excuse me: With photosensitive components after sampling the operational amplifier amplification, then send the feedback signal input terminal of the PWM controller, light to adjust the sensitivity of the feedback signal strength by adjusting the op-amp magnification (resistance), no need for A/D converter and SCM, that is too complex, workload big cost is high. A photosensitive diode, an op-amp, a PWM controller (e.g., UC3843), plus a few resistance capacitance inductance, there are ten yuan or so.

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: Use LED lamp plant useful? Useful for which plants, which plants useless?: Please use the special plants led lights, different plants require different proportion of blue light red light, different growth cycle will be different. The light of the lamp is lighting, may not be able to meet the needs of the plant's growth.

Q: Do leds have ultraviolet radiation: LED is characterized by single band, the wavelengths are generally above is 390 nm, uv to less than 380 nm, so there is no uv components

Q: How long will leds last?: Comparing to conventional light bulb is very durable. LED in general notes, can be used more than 50000 hours, and some producers to promote their LED can operate 100000 hours. The main problem is that the LED is not a simple operation, no longer its rated life cannot use traditional lamps and lanterns of measure method to calculate. In fact, when testing the LED life, no one will stay beside waiting for it to stop working. However, there are still other ways to calculate the service life of the LED. LED is lasting, because it won't produce filament fuse problem. Leds will not stop working directly, but it will gradually degraded over time. Forecasts suggest that high quality LED after 50000 hours of continuous operation, also can maintain more than 60% of the initial degree of the light. Assumes that the LED has reached its rated service life, in fact, it may still be shine, just the light is very weak. Want to prolong the service life of the LED, it is necessary to reduce or completely dispel the heat energy produced is the LED chip. Heat energy is a major cause of leds stopped working, LED the life of the related to LED chip and ELDerly drivers.

Q: Led energy-saving lamps are easy to break: Lamp bead itself long life, but if private purchases, it is important to note that the quality of power supply, if the power supply is normal electrolytic, materials and more bad, can be used for a year is pretty good. When be being bought so little can distinguish good or bad, do not blindly pursue low price, or we will lose out.

Q: 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.

Q: ：Rechargeable led bulbs on the desk lamp is a few volts?: Voltage can be determined. You can also to baidu search, the introduction of this respect or many. I wish you well.

Q: The voltage of the LED lamp is about how much: Power are using domestic load voltage 220 v, after ac into dc, again after decompression for the LED power supply, how many v voltage, LED need according to the design to have different version for different voltage, such as there are 5 v, 6 v, 9 v, 12 v, 16 v, 24 v, 32 v, etc. A LED light-emitting diode connection: string increase the voltage, electric current is constant. And even the constant voltage, electric current increase. For reference only.

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