An electrical drive device includes a control circuit connectable to a voltage source on the input side and to an electric drive motor on the output side. The system may include a source scheduler, a prioritization scheduler, and an IO dispatcher. A cam angle sensor generates the cam angle signal SGC in synchronization with the rotation of a camshaft. In another embodiment, the UV radiation source is a movable lamp unit that travels across the top of the chamber for irradiating the wafer. ID circuitry is at a surface or an interior of the wearable device structure.