LUMINOUS ELEMENT OPERATING DEVICE HAVING A TEMPERATURE-DEPENDENT PROTECTIVE CIRCUIT

摘要

The invention relates to a method for operating at least one load, in particular a luminous element or a light-emitting diode (LED) (8) of an LED module (7), in which a switch (S1) is designed for the clocked actuation of a primary winding (31) of a transformer (T1), the method comprising the following steps: ascertaining the resistance of the material of the primary winding (31) during a phase of the clocked actuation of the primary winding (31) in which the transformer (T1) is demagnetized, and determining by means of a control unit (37) the temperature of the transformer (T1) depending on the ascertained resistance of the material of the primary winding (31).