How to distinguish between LED explosion-proof lamp driver

For more information please click on the bottom right of the title (enter the company's booth)

The LED power driver is a voltage converter that converts the power supply into a specific voltage and current to drive the LEDs to emit light.

Under normal circumstances: LED drive power input includes high-voltage power frequency AC (ie mains), low-voltage DC, high-voltage DC, low-voltage high-frequency AC (such as the output of electronic transformers). The output of the LED driver is mostly a constant current source that changes the voltage as the LED forward voltage drop changes.

According to the power grid rules and the characteristics of the LED power supply driver, the following points must be taken into consideration when selecting and designing the LED power supply driver:

1. High reliability Especially like the driving power source of LED street lights, it is installed at high altitude, so it is inconvenient to maintain and the maintenance cost is also large.

2. High-efficiency LED is an energy-saving product. The efficiency of driving power is high. The structure of the power supply installed in the lamp is particularly important. Because the LED's luminous efficiency decreases as the LED temperature increases, the heat dissipation of the LED is very important. The efficiency of the power supply is high, its power consumption is small, and the heat generated in the lamp is small, which also reduces the temperature rise of the lamp. It is beneficial to delay the decay of the LED.

3. High power factor The power factor is the demand of the grid for the load. Electrical appliances below 70 watts are generally not mandatory. Although the power factor of a single appliance with low power has a little lower impact on the power grid, at night, everyone lights up and the similar load is too concentrated, causing serious pollution to the power grid. For a 30-watt to 40-watt LED driver, it is said that in the near future, there may be certain indicators of power factor requirements.

4. Drive Modes There are two types of traffic: one is a constant voltage source for multiple constant current sources, and each constant current source supplies power to each LED individually. This way, the combination of flexible, all the way LED failure, does not affect the work of other LEDs, but the cost will be slightly higher. The other is a direct constant current supply with LEDs running in series or in parallel. Its advantage is that the cost is lower, but the flexibility is poor, but also to solve a certain LED failure, does not affect the operation of other LED. Both forms coexist for a period of time. Multiple constant current output power supply methods will be better in terms of cost and performance. It may be the mainstream direction in the future.

5. Surge protection The ability of the LED to withstand surges is relatively poor, especially against reverse voltage capability. It is also important to strengthen this protection. Some LED lights are installed outdoors, such as LED street lights. Due to the start of the grid load and the induction of lightning strikes, various surges can be invaded from the grid system, and some surges can lead to LED damage. Therefore, the LED drive power must have the ability to suppress surges and protect the LED from damage.

6. Protection function In addition to the conventional protection function, it is better to increase the LED temperature negative feedback in the constant current output to prevent the LED temperature from being too high.

7. The protection of the lamp outside the installation type, the power supply structure should be waterproof, moisture-proof, the shell should be lightfast.

8. The life of the driver power supply must match the life of the LED.

9. To meet safety and electromagnetic compatibility requirements.

With the increasing use of LED, the performance of LED power supply will be more and more suitable for LED requirements.

Finally remind the majority of users, we must see the components on the drive power supply, whether domestic, whether imported, if you want to LED explosion-proof light quality requirements are not high, then you can choose and cheap domestic components drive, if you on the LED When the requirements of explosion-proof lights are high, you have to pay attention to it. Now the market of LED explosion-proof lights is very competitive. In order to survive, I use a series of methods to reduce costs and obtain higher profits. Now we may know the most. Is a chip brand, and ignored the drive brand, LED explosion-proof lamp drive power, using imported components, its performance is stable and greatly exceeds the drive of domestic components. Ronglang Electric promises that the components of the drive power supply for all LED explosion-proof lamps of our company are imported components. Everyone can analyze and disassemble our explosion-proof lamps.