Headlamp Ballast

Image is an example only, BRAND MAY VARY

A Ballast Control Unit (BCU) in a car is an essential component responsible for regulating the power supply to the ballast of high-intensity discharge (HID) or xenon headlights. It ensures consistent and stable voltage output to the ballasts, which is crucial for the proper functioning of these headlights. The BCU prevents power fluctuations, voltage spikes, and overloading that could potentially damage the ballasts or the entire lighting system.

The BCU acts as a control center for the HID or xenon headlights, enabling them to operate at their optimal performance. It controls the ignition sequence, steady-state control, and failure detection of the headlights. Additionally, the BCU monitors the temperature of the ballasts and regulates the current flow accordingly. By maintaining a constant power supply and protecting the ballasts, the BCU ensures reliable and long-lasting illumination from the HID or xenon headlights.