LED ceiling light is a type of ceiling light that uses LED as the light source. It is installed inside the room. Due to the flat upper part of the lamp, it is installed close to the roof, as if it is adsorbed on the roof, so it is called an LED ceiling light. It has high light efficiency, low power consumption, long lifespan, easy control, maintenance free, safety and environmental protection. It is a new generation of cold light source, which is more energy-efficient than tubular energy-saving lamps. It has high brightness, long projection distance, good projection performance, wide voltage range, and the light source can achieve seven color changes of LED through the built-in controller of the microcomputer. The light color is soft, bright, rich and colorful, low loss, low energy consumption, and green and environmentally friendly. The most commonly used power sources include 10W, 16W, 21W, 28W, 32W, 38W, 40W, etc. We know that LED must be driven by a constant current source, otherwise due to its negative temperature coefficient, it will cause a sharp increase in current, leading to an increase in junction temperature and a shortened lifespan. There are two types of constant current sources: linear and switching. The advantages of a linear constant current source are that it does not generate electromagnetic interference (EMI), is simple, and has low cost. Its disadvantage is that its efficiency is relatively low. Recommended Part No.: