Use the long life of capacitance does not necessarily should make sure that that the power supply life, to improve the power supply life, just should improve from multiple aspects: the use regarding the service life regarding the high capacitance, improve the efficiency, completes the power supply cooling design, optimization creation of heat lamps. Many lamps sequential to think about the creation of enterprise lamps to reduce mass compact, requirements shall power volume do mini and installed in a closed space, its power source of radiation condition was limited. So high efficiency, mini volume and better thermal creation is led strip challenges. In addition to general lights of power conversion to light life outside, most regarding the power are into ir radiation life radiation to light fixtures outer space, and LED lighting is different. Leds are semiconductor to shine, and its power except the component into light life outside, most regarding the power are converted to heat energy, the quantity of heat can have the aid of and chip of integrated the light body heat dissipation.
Merchants to lighting products structure regarding the whole beautiful, often Flexible LED Strip Lights and LED lights body structure creation together closely, LED the heat and power of fever stack, such power and LED light source is in bad working environment, when work environment heat higher than a sure temperature, LED the life regarding the power supply and LED to sell at a discount greatly. Internal power set heat protection shall have opened the phenomenon of repeatedly turn off the lights, do not set up the heat protection and high heat can cause damage power devices and accelerate the LED light failure. Outdoor LED Lighting belongs to switch power supply, switching power supply quality and reliability of depends on its circuit design, production process, and the quality regarding the device. Electrolytic capacitor is powerful switching power supply compulsory component in. And the normal work regarding the switch power life depends on the power supply by use of electrolytic life, electrolytic life depends on the life and the work itself capacitance temperature.
Capacitors in different heat the working life regarding the difference is very big. Take a foreign well-known brand electrolytic capacitor, for example: The general-40 + 105 -lifetime guarantee specifications capacitance cost is in 105 full load conditions 4000 hours. If we creation capacitance ripple current load cost largest use to 85%, it: regarding to release life estimation formula The heat of 65 capacitance when life only guarantee the about 80000 hours; The heat of 75 capacitance when life only guarantee the about 40000 hours; The heat of 85 capacitance when life only guarantee the about 20000 hours; The heat of 95 capacitance when life only guarantee the about 10000 hours; From the above calculation: electrolytic heat rise every 10, life should be halved. Lamps work environment temperature, component regarding the summer night in outdoor surface temperatures as high as 40, or even higher. Lamps autologous heat rise: due to the fact that of warm LED make itself to rely on shell heat, reasonable creation its LED lamps shell heat of about 20 -between 25.
And that is the room heat 25 work conditions, lamps shell heat of about 45 -about 50. The power of autologous heat rise: power source creation better power components in 25 to 30 heat around, the creation of more bad regarding the heat rise is greater than 35, outdoor LED power supply requirements waterproof, shall be sealed shell, for protection grades increase factories want encapsulating compound processing, different colloidal fabric cost cost, thermal conductivity is different also, non-pricey glue heat conduction performance is poor, and requires high heat baking, often can cause components of different position of damage and a tight beam invisible, left hidden trouble. heat treatment that casing electrolytic bad work environment as vacuum flask, heat accumulation cannot spread out.
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