A data processor identifies a source format and a destination format of data. The devices are small, thin and lightweight, yet provide sufficient power for many handheld electronics. Also disclosed are an overvoltage circuit configured to switch off electrical connection between the AC voltage and the string of LEDs upon the AC reaching a predetermined high voltage value on a half-cycle basis in order to limit power. When the radio wave reflector further approaches to the rotating tool and the calculated distance and speed fulfill a second criterion, a second brake for applying rapid braking to the rotating tool is activated. Furthermore, the invention relates to a composition comprising high concentrations of omega-3 fatty acids, and a lipid fraction from krill comprising high amounts of fatty acids with chain length C14 and C16.