pay attention to the LED power supply for LED street lamps and direction of development overview

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But we want a clear understanding of LED long life of the publicity, ignore or avoid another decision of the key issues of the LED lamp life: that is, the quality of the LED driver power supply. Various lighting manufacturers in the practical application of LED met a lot of fa ilures, malfunctions due to electrical short-term issues such as product quality accidents and the high level of after-sale maintenance costs caused huge losses to the manufacturers, but also a blow to consumer confidence in the LED lighting products . Thereby affecting the development of the LED lighting industry.

Technical staff in this our industry a key part of the LED power quality were more detailedly analysis, for your reference!

The life of the LED power source: High Power downlight led 1W

Businesses in order to power the product structure as a whole beautiful, often the power supply and LED lamp structure, compact design with LED heating and heating of the power of cross-infection, so that the power and the LED light source in a poor working environment, work environment temperature exceeds a certain temperature, the life span of components is greatly reduced. The internal power supply will appear when you set the temperature to protect the stroboscopic phenomenon, do not set the temperature protection will die lights, poor working conditions is not always improve, resulting in a vicious cycle. Corporate reputation or reliability of the product is unable to be guaranteed.

LED power of life mainly depends on the temperature of the power capacitor type used and the internal power supply.

Take Taiwan, a well-known capacitance of the capacitor brand, for example: Universal -40 - +105 degrees specifications capacitance value life assurance (in the conditions of 105 degrees at full load) 4000 hours. If we design the capacitor ripple current load value to use to 85% can only guarantee in life when the capacitor temperature is 65 degrees about 80,000 hours.

Capacitance temperature of 75 degrees, life can only guarantee of about 40,000 hours.

Capacitance temperature of 85 degrees, life can only guarantee of about 2 0,000 hours.

Capacitance temperature of 95 degrees, life can only guarantee of about 10,000 hours.

Projected from above: the temperature of the electrolytic capacitor every rise of 10 degrees, life will be halved.

Electrolytic capacitor operating temperature:

The power supply design a better power device temperature rise at about 25-30 degrees, the design of the relatively poor temperature rise led lights for homes than 35 degrees, outdoor LED power requirements waterproof, requires the use of a sealed enclosure, irrigation requirements for the improvement of the protection class manufacturers The plastic handle different colloidal material prices and costs is not the same cheap plastic high temperature baking, often the cause invisible damage of the components of different degrees and Jinshu strained left hidden. (Deal with the poor also makes the shell temperature of the electrolytic capacitor part of the heating power devices at the same temperature).