In principle, each LED module requires a control gear (ballast). In the field of LED technology, these are called drivers.
In an LED, the current can only flow in one direction (diode).
When heated, the current and thus the power consumption in the LED can increase, leading to further heating.
If this "circuit" is not limited, there is a risk of destroying the LED. Preventing this is one of the tasks of the driver.
LED modules can be operated with two different supply sources (drivers) depending on the type of circuit:
- constant current source
- constant voltage source