| 摘要 |
A driver circuit (21) for a light source (20) comprises an input configured for coupling to a power line (19). A control device (24) is configured to control at least one controllable switch (23) to control an output current or output voltage of the driver circuit (21). The control device (24) is configured to set a switching frequency of the at least one controllable switch (23) in dependence on data to be transmitted by the driver circuit (21; 121, 131) over the power line (19). |
