How to distinguish the quality of LED street light power supply
IC is the core of LED street lamp power supply, and the quality of IC directly affects the entire power supply. The IC on the LED street light power supply refuses to be polished, so that the lighting manufacturer can understand the IC solution and calculate the cost of the drive, so as to purchase power supply products at a reasonable price. Next, Topbonwe will analyze how to distinguish the quality of LED street light power supply.
The application of LED power supply is becoming more and more extensive, and more and more people want to know how to identify the quality of LED power supply. The following is a brief introduction.
First, the driver chip
The core of the IC drive power supply is the IC, and the quality of the IC directly affects the entire power supply. The IC on the LED power supply refuses to be polished, so that the lighting manufacturer can understand the IC solution and calculate the cost of the drive, so as to purchase the power supply products at a reasonable price.
Second, the transformer
The control chip can be regarded as the brain center of the power supply, and it is the transformer that determines the power and temperature resistance. The transformer is responsible for completing "AC - magnetic energy - DC", and the energy overload will saturate the fryer. The core of the transformer is the magnetic core and the wire wrap.
Third, electrolytic capacitors and chip ceramic capacitors
The quality and life requirements of input electrolytic capacitors may be known to everyone, and everyone also attaches great importance to them. However, people tend to ignore the quality requirements of the output capacitor. In fact, the life of the output capacitor has a great impact on the life of the power supply. The output terminal has a switching frequency of up to 60,000 times per second, which causes the parasitic resistance of the capacitor to heat up, producing substances similar to scale, and finally the electrolyte heats up and explodes. Ceramic capacitor: The material is divided into X7R, X5R and Y5V, and the actual capacitance value of Y5V can only reach 1/10 of the actual value, and the nominal capacitance value only refers to working at 0 volts. Therefore, this tiny chip resistor and poor options will also lead to a price difference in cost and greatly shorten the life of the power supply.
Fourth, circuit design and welding process of power supply products
Discrimination of design pros and cons: Aside from the professional point of view, it can be distinguished by some intuitive methods, such as neat, generous, orderly layout of components, and clean and straight soldering. A good engineer doesn't make cluttered designs. As for flying lines and manual addition of components, it is a serious lack of technical strength. Soldering process: manual soldering and wave soldering process, as we all know, the quality of the wave soldering process of mechanized production is definitely better than that of manual soldering. Identification method: whether there is red glue on the back. .
At present, the flashing phenomenon of lamps in use for a period of time is basically caused by the virtual welding of the power supply or lamp beads. The product's virtual welding detection is extremely difficult to pass the aging test, so it is necessary to rely on AOI to detect the patch quality of the power supply.
Fifth, batch testing aging racks and high temperature aging rooms for power products
Even the best power supply products controlled by materials and production processes still need to be tested for aging. Because the incoming inspection of electronic components and transformers is difficult to control. Only through the aging of the entire batch of power supplies and the high-temperature sampling inspection of the high-temperature room, the quality stability of this batch of power supplies and whether the materials have potential safety hazards can be detected.
Benwei Lighting is an LED Tube, LED flood light, LED Panel Light, LED High Bay, LED manufacturer with 12 years of experience. If you want to purchase a high-quality LED flood light or have a more in-depth understanding of the application of LED flood lights, please contact send us inquiry， our web: 
https://www.benweilight.com/.
