Visit：2297   Date：2023-11-13

LED is a recent energy-saving and environmentally friendly light source, which not only saves energy and is environmentally friendly, but also has a lifespan of 100000 hours. It is a new type of light source advocated by the government and the country. It has been a long time since the introduction of LED beads in 1996, and with the progress of technology, the shortcomings of LEDs are gradually being improved. Today, we will talk about some common problems in LED beads and how to deal with them.

Problems caused by abnormal power supply: Check if the power supply is working properly and if the warning light is on. If it is not on, please check if the power supply is connected properly; Check if the power cord of the lamp bead is properly connected to the positive and negative poles of the power supply, and if there is any reverse phase. If the above problems exist, please connect them correctly.

How to distinguish the luminous color of LED beads: When not powered on, it is recommended to prepare a 3V button battery for convenient selection during purchase. This battery can be used to easily check what LED emits during selection.

Voltage requirements for LED beads: LED beads with a nominal voltage of 3V actually have different current requirements for different colors. Yellow requires the lowest current, followed by red, green, white, and blue. Excessive current can cause the wick to burn. When using a 2.4V rechargeable battery, the yellow color is prone to burning, because even if the voltage is not high, the current is too high, and it can still burn at will. When using button batteries, although the voltage of the button battery is 3V, the discharge current of the button battery is very small, so the 3V LED beads will not be burned. Therefore, when using LED beads, it is important to choose a suitable power source, pay attention to voltage and current. When selecting a power supply, if it does not meet the rated requirements of LED beads, it is necessary to improve the circuit and commonly add resistors!

      The reason for the leakage of LED light beads: the machine equipment is not grounded, and personnel are not wearing an electrostatic bracelet (if there is a rope). Improper electrostatic protection caused. Furthermore, during the packaging process, there was a deviation in the PAD soldering of the soldering wire, and finally, there was a quality hazard issue with the chip itself.

The reason for the burning of high-power LED lamp beads: The upper and lower two filaments, which are called gold wires in our industry, are pure gold and used for conductivity. There are two positive electrodes and two negative electrodes, and a truly good product will have a fifth wire, which is soldered onto a Zener tube and the protective filament becomes shorter. It is clear to you that your lamp has been burned out by high current, equivalent to a circuit breaker 033. The driving current of high-power 1W is about 350ma, The working voltage is between 3.2 and 3.6V. Please be careful when using it. Excessive current will definitely burn out the lamp. Generally, the aluminum substrates of three 1W lamps are driven by around 12V, and there are rarely those that are directly used for 220V. Can you see if there is a missing constant current source or a missing 12V driving power supply?
The reason for the yellowing of LED lamp beads: The yellowing of LED outer sealing adhesive is mostly caused by the mismatch between epoxy resin and curing agent, but it cannot be ruled out that the baking time of the outer sealing adhesive is too long. How to solve it? Purchasing a complete set of external sealing adhesive and curing agent, such as Shanghai Fine Chemical's model 800 or 2339 adhesive, will not cause the following situations. In addition, pay attention to production control, strictly follow the operation instructions, and avoid reasons such as excessive or insufficient baking time. This situation is well controlled.
The reason for the large decline of LED lamp bead light: poor thermal conductivity of the iron bracket. Yellowing of epoxy resin. The contact between the chip and the bracket is not tight enough. High chip attenuation
LED beads should be a problem with capacitive and inductive loads: in fact, they are not both. LED beads are a diode that requires a forward conduction voltage to operate, usually 2-3.5V. In addition, the current size can control the brightness of LED beads. That is to say, LED beads only convert electrical energy into light energy. UVC

The most significant advantage of LED lamp beads is that their large style has the advantage of color variability, which can meet the diverse requirements of different customers for the actual effect of light. They can customize light sources, and the application of indoor space is not limited by specifications, further improving the designer's practical operation of indoor space using light sources.

The advantages of LED lamp beads are definitely more than their disadvantages, such as low power consumption, high brightness, bright colors, vibration resistance, long lifespan (normal luminescence of 80000 to 100000 hours), cold light source, and other advantages, making them truly "green lighting". I believe that the future LED beads will develop better and better with the progress of the times!