What device regulates the power supply to control lighting fixtures?

The LED driver is the device that regulates the power supply to control lighting fixtures, particularly when it comes to LED lighting. An LED driver provides the necessary voltage and current that LEDs require to function effectively while ensuring that they operate within their specified limits. This is crucial because LEDs have specific electrical requirements, and an improper power supply can lead to poor performance or even damage.

The LED driver adjusts the power according to the needs of the lighting fixtures, facilitating dimming, color changes, and other functionalities that enhance lighting control. This regulation helps maintain consistent brightness levels and can improve the lifespan of the LED fixtures by preventing overloading.

Other devices listed, such as the LED transformer and LED controller, serve different purposes. The RGB controller primarily manages the color and intensity of RGB LED lighting, while the LED transformer usually refers to a device that converts higher voltages to a lower voltage suitable for powering LEDs. Although they play roles in an LED lighting system, they do not specifically regulate power in the same way that an LED driver does.