Nowadays, there are more and more LED street lights in cities, and traditional street lights with high-pressure sodium lamps as light sources are gradually being replaced. However, the quality level of LED street lights on the market is uneven, so it is very important to choose an LED street light with excellent quality. The power supply of LED street lights is an important part of LED street lights. When we choose LED street lights, the power supply must meet these three requirements:
1. LED street light power supply must be constant current
The characteristics of the lighting material of LED street lights determine its impact on the environment. For example, if the temperature changes, the current to the LED will increase. Also, the voltage of the LED will increase. If the long-term operation exceeds the rated current, the service life of the LED lamp beads will be greatly shortened. The constant current of the LED street light power supply is also the current value that ensures its operation when environmental factors such as temperature and voltage change.

2. LED street lamp power constant current accuracy
Some power supplies on the market have poor constant current accuracy, the error may reach ±8%, and the constant current error is too large. The general requirement is ±3%. According to 3% design. The production power supply should be fine-tuned to achieve ±3% error.
3. Appropriate working current of LED street light power supply
For example, an LED street light has a rated operating current of 350 mAh. Some LED street light manufacturers use it at the beginning, with a design of 350 mA. In fact, the operating heat at this current is very serious. After many comparison tests, the design of 320mA is more suitable, which can minimize heat and convert more power into visible light.