1. Electric energy conversion function, which converts high-voltage alternating current into safe electricity that can be used by LED light sources;
2. Constant voltage function, which can limit the maximum value of output voltage, guarantee constant voltage and limit voltage output when no load is connected or light load, and ensure the safety of the light source;
3. The constant current function can limit the maximum value of the output current and keep it constant, meeting the characteristics of constant current operation of the LED light source, and ensuring the same current through the light source when there is a small change in the voltage of the light source.