A sequential power transmission between a portable user-carried battery and first and second independent accessories. In one embodiment, the semiconductor component arrangement includes a power transistor formed within a semiconductor layer in at least one first region and further semiconductor components formed at least in a second region, an effective thickness of the semiconductor layer being smaller in the first region than in the second region. The toothbrush comprises an actuator for moving either the applicator andor the reservoir between different positions. A first side face of the gate electrode is formed over the isolation region. The joining profiles are provided with lips arrange in pairs.