Led lighting has a huge energy-saving effect, will replace the traditional light source, which will trigger the fourth revolution in the history of human lighting, greatly improve the living environment of human beings, alleviate the increasingly severe energy crisis in the world, at the same time when LED shines brilliantly, led driving power supply is the guarantee of the development of LED industrial chain. The quality of LED power supply directly restricts the reliability of LED products.
Because LED is a sensitive semiconductor device, and has a negative temperature characteristics, so in the application process of its need for stable working state and protection, resulting in the concept of driving. Led devices are nearly as demanding for driving power, unlike ordinary incandescent bulbs, which can be connected directly to 220V AC mains electricity. Led is a low-voltage 2 ~ 3 volts drive, must design a complex conversion circuit, different uses of LED lights, to be equipped with different power adapter. In the international market, foreign customers have very high requirements on the efficiency conversion, effective power, constant current accuracy, power life and electromagnetic compatibility of LED driving power supply, because power is as important as the human heart in lighting.
