How to correctly choose the LED power supply

The current modern lighting engineering key part, can be said to be the LED power supply, each kind of power supply have different purpose choice! So how to configure the power supply? Solar street lamps manufacturer in LED power supply when the choose and buy must understand these properties and characteristics.

　　1. High stability: like in high altitude for the drive power of LED street lights maintenance is not convenient, less maintenance cost is reduced at a time.

　　2. High efficient energy saving, efficiency of drive power supply. For the power structure of Ann in the lamps and lanterns is very important. Because the LED luminous efficiency will be as LED temperature rise or fall, so the LED heat dissipation is very important. Power supply with high efficiency, its power consumption is small, in the lamps and lanterns of calorific value is small, can reduce the temperature of lamps and lanterns, to delay the droop of the LED is very good. Yangzhou street lamp manufacturers, specializing in the production of light pole, light,

3. High power factor, power factor is the requirement of load of power grid. Under 70 watts of electrical appliances, there is no mandatory standard. Though the power of a single use lower electric power factor, the impact on the grid is not big, but the evening electricity consumption is large, the load is too concentrated, can produce serious pollution to grid. For 30 w - 40 w LED drive power supply, the country also has certain indicators of power factor requirements.

　　4. Driving mode: now there are two general, a constant voltage source for multiple constant current source, each constant-current source separate for each LED power supply. Flexible combination, LED failure all the way, don't affect the work of other LED, the cost will 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. The ability of anti surge surge protection: LED is relatively poor, especially the reverse voltage resistance. This aspect of the protection is also very important. The installation of outdoor LED lighting, because 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 function: outside the conventional protection function, it is better to add the LED temperature in the constant current output feedback, prevent LED temperature is too high.

　　7. Outside the protective aspect: the power structure of the installation should be 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.