How to judge the quality of LED power supply?

The lifespan of LED floodlights. The quality of the power supply directly determines its service life, and also directly affects the potential power consumption of LED floodlights.

How to buy your own LED floodlight? First of all, the prerequisites for purchasing LED floodlights are to analyze whether its chip is good. A good chip directly affects its lifespan and light decay. Domestic chips cannot be used at all. Yes, in the casing of a floodlight, the reason why the LED floodlight has a three-year warranty and is a high-quality genuine floodlight is mainly due to the thick material used. The thick material casing of the LED floodlight has enough material to ensure its heat dissipation. The most critical thing is the power supply. Below we describe in detail the views of LED floodlights on power supply.

Nowadays, when buying LED floodlights, everyone is afraid of buying defective lamps with poor quality, insufficient tiles, or LED lamps that consume a lot of power, or cheap lamps with low power factor conversion, which will cost money and make them sad. With the rapid development of the LED lighting industry, LED drive power supply manufacturers have also expanded rapidly. On the one hand, LED floodlight drive power supply manufacturers have launched new LED drive power supply products. On the other hand, many entrepreneurial companies have also established their own factories. LED drive power supply technology is not yet mature, relevant specifications have not been introduced, and the industry is full of chaos. Under such development circumstances, many lighting manufacturers do not want to buy good LED power supplies, but they do not know how to identify the quality of LED power supplies, and they are also worried about spending high prices to buy low-quality LED power supplies. Because the quality of power supplies is difficult to detect, some aging products often have around 5% or more defects within 3-6 months of shipment. Often these bad situations make lighting manufacturers miserable, and every customer loses a customer.

So how to judge the quality of LED power supply? What are its influencing factors? Now I will teach you a few quick and simple methods to identify the quality of LED power supply.

1. The level of PFC (power factor)

But high PFC does not necessarily mean it is good. It also needs small overall slope wave, small ripple, and low interference (because some manufacturers deliberately make PFC very high but ignore the electromagnetic compatibility part).

2. Conversion efficiency

The level of conversion efficiency, the size and stability of the deviation value, for example: in the working voltage range of AC170-250V, I can try to debug from 170V-250V. The constantly changing voltage from low to high can be seen on the power meter. Whether the "conversion efficiency, PFC" fluctuates greatly to prove its stability.

3. Check whether the temperature rise of the power supply is high.

The higher the temperature of the power supply itself, the greater the damage to components.

4. Periodic aging test

Lamps that are continuously powered off are aging. Even if the power is off for about a month, the attenuation of the lamp beads and whether the heat dissipation of the lamp housing is good can be detected.

5. Detect the impulse current to the lamp bead instantly when the power is turned on.

6. Detect the stability of constant current.

7. Check the protection function of the power supply: whether it has over-temperature protection, over-voltage protection, over-current protection, and short-circuit protection. 8. High voltage: Whether the input and output can exceed the withstand voltage of more than 3000V. Whether the input to ground can exceed the withstand voltage of 1500V.