Factory direct wholesale new product portable usb led light rich colors usb led lights

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Product Description:

Quick Details

Brand Name:

Lianfali

Model Number:

usb Light

Place of Origin:

Guangdong China (Mainland)

Use:

Computer

USB Type:

Other

ODM/OEM:

support

Packaging & Delivery

Packaging Detail:Carton
Delivery Detail:3-15days

Features:

1.By using low rated voltage 5v,power 1.2,safety and high efficiency.

2. Connectable to USB ports on any iBook, PowerBook, Cube or PC notebook.  

3. Plug and play

4. Powered by USB port, no external power needed

5.Usb led light for night work


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Q:Performance and characteristics of LED lamp string
The 1.LED light string is led by a light emitting diode packaged in an imported chip;The design of light angle 2.LED lamp string of the larger angle angle of >120 degrees, uniform mixed color, no color;3.LED lamp string selected LED dedicated constant voltage power supply mode, circuit design for constant current circuit, the work performance is very stable, so as to ensure normal life >5 hours;
Q:Low voltage LED lamp string resistance is how to count, there is no formula?
In general, LED lamps need constant current to drive, and the voltage may be adjusted according to the aging degree of the LED lamp.
Q:What's the price of the LED light string?
On the market now, 3014 of 11lm is often priced at between 0.13-0.16. The lamp has stable performance, good brightness, low luminous decay, and color index is much better. 600x600LED panel light 360 beads, which is about 53 yuan.Are basically using 11x23 or 11x26mil chip, chip /pcs lamp about a penny.
Q:Led full-color light string and how to control wiring
Three line full color exposure lamp data signal two, the controller needs two wire negative electrode control, GND signal connected to the DAT surface
Q:Who knows how the controller of outdoor LED lights can be protected against water?
If you don't have a shell, it's an open controller, so you can make a waterproof plastic lid and make it waterproof at the front of the O loopYou can refer to the LED waterproof flashlight for inspiration!
Q:The color temperature of LED light string
Light source temperature is different, light color is also different:The color temperature is below 3300K, the color is red, and gives a warm feeling. There is a sedate atmosphere and a warm feeling.The color temperature is in the middle of 3000--6000K, and there is no obvious visual psychological effect in this hue, and there is a refreshing feeling. It is called neutral color temperatureColor temperature exceeds 6000K, light color slants blue, give a person with cool feeling, commonly referred to as cool color temperature.
Q:How do you connect the LED lights?
A series of even parallel. Are not clear, boss, you want to use LED do what?There is a gap, which is the positive pole of the LED (usually the long foot is short and the foot is negative)
Q:The top LED lights always burn the bulb in series
Do not know what kind of drive you are, try to reduce the current of LED, do not exceed the rated operating current of LED on the line. The method of reducing current is related to drive circuit, and the current limiting method is different for different circuits.
Q:How does the LED light string flash?
Because of the special volt ampere characteristics, LED can not use constant voltage driving mode, but is driven by cross flow. The direct drawback of cross flow drive, however, is heat. So people invented the drive mode of pulse drive. For example, 0.5 seconds per second, so that the amount of heat in the LED is reduced by half. Then turn the frequency up to 100 times per second, lighting for 0.005 seconds each time. At this point, the power of the LED is not the same, and people do not feel blinking. What's more, in this driving mode, an approximate cross flow drive (that is, the current is not necessarily precise) can be simplified, which simplifies the drive circuit (the precise cross flow source is very complex)
Q:I want to do a string of LED lights that can use batteries. About 55 or so. The lights are 5MM blue. How can I work? Urgent urgent!!
You can use the 4~6V battery, through the 4W, 2~3 Europe (6V with 3 Euro, 4V with 2 Euro) current limiting resistor, to the LED lamp power supply. The parameters of each lamp are: 3V, 20MA, in parallel (polarity). If you don't quite understand, you can also ask a science and engineering student (preferably a teacher) to help.

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