Nowadays, there are more and more LED street lights in cities, and traditional street lights using high-pressure sodium lamps as light sources are gradually being replaced. However, the quality level of LED street lights in the current market varies, so it is very important to choose a high-quality LED street light. The LED street light power supply is an important part of LED street lights. When choosing LED street lights, its power supply must meet these four requirements: firstly, the lighting material characteristics of the LED street light must be constant current, which determines its impact on the environment. For example, if the temperature changes, the current of the LED will increase. In addition, the voltage of the LED will increase. If the rated current is exceeded for a long time, the service life of LED beads will be greatly shortened. The constant current of LED street light power supply is also the current value that ensures its operation when environmental factors such as temperature and voltage change. 2、 The constant current accuracy of LED street light power supplies is poor in the market, and the error may reach ± 8%, while the constant current error is too large. The general requirement is ± 3%. Based on a 3% design. Fine adjustments should be made to the production power supply to achieve an error of ± 3%. 3、 LED street light power supply working voltage

The recommended working voltage for general LEDs is 3.0-3.5V. After testing, most of the work is at 3.2V, so it is reasonable to calculate based on 3.2V. The total voltage of N lamp beads in series=3.2 * N. The appropriate working current of the LED street light power supply

For example, the rated working current of LED street lights is 350 mAh. Some LED street light manufacturers initially used it with a design of 350 mA. In fact, the working heat at this current is very severe. After multiple comparative tests, a design of 320mA is more suitable, as it can minimize heat and convert more electrical energy into visible light. Only when the LED street light power supply meets the above four requirements can it be considered a qualified power supply. In addition, when choosing LED street lights, it is not only important to pay attention to the power supply, but also to fully understand the other components that make up the LED street lights, so as to choose high-quality LED street lights.