LED strips basic knowledge

LED strips basic knowledge

1. What is LED strip?

The light strip refers to the LED light is welded on a copper wire or a ribbon-shaped flexible circuit board with a special processing technology, and then connected to a power source to emit light; it is named because it is shaped like a light strip when it emits light.

The early process is to weld the LED on the copper wire, and then cover the PVC tube or use the equipment to directly shape it. There are two types of round and flat. The title is distinguished by the number of copper wires and the shape of the light strip; two wires It is called the second line, the circle is added with a circle in front, that is, the circle is two lines; the flat shape is added with the word flat in the front, that is, the flat two lines.

it developed into the use of flexible circuit boards or FPC as the carrier. Because of its simpler processing technology, easier quality control, longer life, higher color and brightness, it gradually replaced the earlier processing technology, and it has gradually become a trend.

Conventional round two lines, round three lines, flat three lines, flat four lines, etc.;

The colors are red, green, blue, yellow, white, colorful and so on.

Diameter: 10mm~16mm, widely used in building contours, bridges, guardrails, hotels, forest gardens, dance halls, and places for advertisement decoration.


2. the main features and advantages of the light strip

1. It is soft and can be curled like a wire.

2. Able to cut and extend.

3. The light source and circuit are completely covered in flexible plastic, which has good insulation and waterproof performance and is safe to use.

4. Strong weather resistance.

5. It is not easy to break and has a long service life.

6. It is easy to make graphics, text and other shapes; it has been widely used in decoration and lighting of buildings, bridges, roads, gardens, courtyards, floors, ceilings, furniture, cars, ponds, underwater, advertisements, signs, signs, etc.


3.  the life of the LED strip

Since LEDs are constant current components, the constant current effects of LED strips produced by different manufacturers are not the same, and of course the life span is different. Of course, if the toughness of the copper wire or flexible circuit board of the light strip is not good, it will also affect the life of the LED light strip.


4.  the precautions for the maintenance of the LED light belt

1. Anti-static:
Because LED is an electrostatic sensitive component, if you do not take anti-static measures when repairing the LED strip, it will burn out the LED and cause waste. It should be noted here that the soldering iron must use an anti-static soldering iron, and the maintenance personnel should also take anti-static measures (such as wearing a static ring and anti-static gloves, etc.)


2. Continuous high temperature:
The two important components of LED strips, LED and FPC, are products that cannot continue to withstand high temperatures. If the FPC continues to high temperature or exceeds its withstand temperature, it will cause the FPC cover film to bubble and directly cause the LED strip to be scrapped. At the same time, LEDs cannot withstand high temperatures continuously, and their chips will be burned out at high temperatures for a long time. Therefore, the soldering iron used when repairing the LED light belt must be a temperature-controlled soldering iron, and the temperature is limited to a range, and it is forbidden to change and set at will. In addition, even so, it is necessary to pay attention to the soldering iron not to stay on the LED pin for more than 10 seconds, if it exceeds this time, it is likely to burn the LED chip.


3. Short circuit:
Many LED strips are bad because there is a short circuit at the pin. Be sure to find out the reason before repairing. Otherwise, after rashly replacing the bad LED, it will continue to cause the LED chip to be broken down by the short-circuit current when the power is turned on again. Therefore, before replacing a new LED, you must first find out the reason, and then you can get twice the result with half the effort by prescribing the right remedy