Power supply LED power supply, also called drive power supply, has only one function, providing stable and constant current power supply to the LED lamp beads. If the working current of the LED exceeds the rated current or the voltage is unstable, the LED will quickly become aging and damaged. LED is a very energy-saving and low-power product. Generally, the working voltage is only a few volts. The few tens of volts are special-purpose lamps, and the current used is relatively low, generally calculated in milliamperes. The lamps we see daily, The wiring is directly connected to the household mains 220V, and the driving power is first passed, and then the voltage is stabilized and rectified before being conducted to the LED lamp beads.

It is divided into isolated and non-isolated. The non-isolated one is connected to the LED lamp after direct step-down. The isolated power supply is the input and output are isolated by a transformer, and there is a process of electro-magnetic and then-transition. The safety is relatively better than non-isolated. The power supply is high, and the cost will be more expensive at the same time. In addition, whether the LED driving power supply has functional guarantees such as short circuit protection, surge protection, power failure protection, leakage protection, etc., is also the core factor that affects the final price of the lamp.