LED waterproof power supply is a kind of LED driving power supply. It is a voltage converter that converts the power supply into a specific voltage and current to drive LED light. Usually, the input of LED driving power supply includes high-voltage power frequency AC (ie mains), Low-voltage DC, high-voltage DC, low-voltage high-frequency AC (such as the output of electronic transformers), etc. The output of the LED drive power supply is mostly a constant current source that can change the voltage with the change of the LED forward voltage drop value. It is different from the general LED drive power supply in its waterproof function. According to different needs, it can be designed to be IP65, IP66, IP67, IP68 and other waterproof and dustproof grades. Among them, the IP68 grade can be completely immersed in water.

The normal working life of the LED waterproof power supply depends on the life of the electrolytic capacitor used in the power supply, and the life of the electrolytic capacitor depends on the life of the capacitor itself and the operating temperature. The life of the capacitor at 65°C can only be guaranteed for about 80,000 hours. The life of the capacitor at 75°C can only be guaranteed about 40,000 hours; the life of the capacitor at 85°C can only be guaranteed about 20,000 hours; the life of the capacitor at 95°C can only be guaranteed about 10,000 hours; from the above calculations: The life of the electrolytic capacitor will be halved for every 10°C increase in the temperature of the electrolytic capacitor.

LED waterproof power supply is also a kind of LED driving power supply. It is a voltage converter that converts the power supply into a specific voltage and current to drive LED lighting. Most of the output of LED driving power supply is a value that can follow the forward voltage drop of LED. A constant current that changes while changing the voltage