On the importance of LED lights to ensure the quality of power supply drive

On the importance of LED lights to ensure the quality of power supply drive

Not long ago, a certain LED projector produced by Ningbo company in the United Kingdom was unable to properly illuminate due to power supply quality problems, and was disposed of by customers.

In the subsequent retrospective investigation of returned goods, the inspection and quarantine personnel found that the LED flood light complies with the EU EMC Electromagnetic Compatibility Directive and the LVD Low Voltage Directive test, has CE certification, and can normally illuminate under 220V voltage environment. The power supply is obviously working, so where is the problem? With questions, the investigators further learned that the original version of the power drive nameplate shows a wide voltage input with a power of 30 watts and an input voltage range of 85 to 265 volts. The product's plug also indicates the product's input voltage. The problem is 110 to 130 volts. The problem is that the communication between the manufacturer and the supplier is not smooth. The supplier assumes that the British civilian voltage is 230V. From the cost consideration, the voltage range of the large cargo power supply is narrowed, resulting in insufficient power. It has been verified that the batch of LED lamps can only be started normally at voltages higher than 140 volts.

The batch return survey shows that it is true that the supplier is wrong, but the manufacturer does not consider the final use environment of the product, and does not have the aging test equipment. It is also important to make the problem-driven assembly into the finished product export and not to close the source of the product and the factory. One of the reasons for the return shipments, they together contributed to the bitter fruit of this return.

To this end, remind LED light source related companies: organize relevant technical personnel to learn to master the global market grid voltage requirements and differences, product development and design links to fully consider the use of the environment, carefully select wide voltage or narrow voltage power drive; at the same time, manufacturers must also strengthen Procurement parts inspection and finished product inspection, preparation of aging tester and other testing equipment, verify that the power drive quality is the same, to ensure that the product is safe and reliable, to avoid the risk of return.

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