A circuit includes a first CMOS device forming a gain stage of a power amplifier and a second CMOS device forming a voltage buffer stage of the power amplifier. The capstock composition comprises the same or different thermoplastic polymer and contains a plurality of discrete particles immiscible with and dispersed in the thermoplastic polymer of the capstock composition. Furthermore, the present invention relates to an electrical machining tool as well as a current supply device with the inventive monitoring device and a corresponding method of operation. Processing the image may include determining response piece identification information and sending the response piece identification information to an accounting system to update an account associated with the response piece identification information. First and second steering mechanisms can be coupled to the first and second wheel assemblies and the first and second support assemblies. In a Rankine cycle, a refrigerant is circulated through a pump, a heater, an expander and a condenser in that order, and power is recovered by the expander 330 due to the expansion of the refrigerant from the heater.