The role of LED drive power supply

1. High reliability, special like LED street lamp driver power supply, in a high altitude, waterproof aluminum drive power supply, good quality is not easy to bad, reduce maintenance times. 2. LED is energy efficient products, the efficiency of the drive power supply. For the structure of the power supply installed in the lamps and lanterns, is particularly important. Because the LED luminous efficiency with the rising of LED temperature drops, so the LED heat dissipation is very important. Power supply of high efficiency, its power consumption is small, in the lamps and lanterns of calorific value is small, also lower the temperature of lamps and lanterns. Good for delaying the LED light failure. 3. High power factor power factor is the requirement of load of power grid. Generally below 70 watts of electrical appliances, there is no mandatory indicators. Though the power of a single use lower electric power factor, the impact on the grid is not big, but at night you light a lamp and its load is too concentrated, can produce serious pollution to grid. For 30 ~ 40 watts of the LED drive power supply, it is said that in the near future, may be to power factor aspect has certain index requirements. 4. Drive way now prevailing are of two kinds: one is a constant voltage source for multiple constant current source, each constant-current source separately for each LED power supply. This way, flexible combination, LED failure all the way, don't affect the work of other leds, but the cost would be slightly higher. The other is a constant current power supply directly, leds in series or parallel operation. It has the advantage of low cost, but poor flexibility, but also solve a LED failure, does not affect other LED running problem. These two forms, for a period of time. Multi-channel constant current output power supply way, in terms of cost and performance will be better. Maybe the mainstream direction of the future. 5. LED anti surge surge protection ability is relatively poor, especially the reverse voltage resistance. Strengthening the protection is also very important. Some LED lights installed outdoors, such as the LED street light. As a result of the power grid load and sling and lightning induction, into the various surge from the grid system and some surge can cause the damage of the LED. So the LED drive power to suppress surge intrusion, ability to protect the LED was damaged. 6. Protection power supply in addition to the conventional protection function, the best in the constant current output increase LED temperature feedback, prevent LED temperature is too high. 7. Protection type lamps and lanterns is installed outside, the power supply structure to waterproof, moistureproof, shell to fast. 8. The life of the drive power supply and LED the life of the adapter. 9. To conform to the requirements of safety and electromagnetic compatibility. As the LED application is becoming more and more widely, the performance of the LED drive power supply will be more and more suitable for the requirements of the LED. Above all buy drive power supply important thing: whether or not to bring a IC control chip, because IC control chip has prevent short circuit, over voltage, overload, over temperature protection function. As long as can do both in place of driving power, the quality is very good power supply.