An arrangement is disclosed for a motor controller, the arrangement including a number of power semiconductors and cooling elements, the cooling elements being connected to the power semiconductors for cooling them. Such electrode are useful as electrodes in batteries, such as Ni-MH batteries, Ni\u2014Cd batteries, Ni\u2014Zn batteries and Ni\u2014Fe batteries. The inflator also includes a closure member openable to release the fluid to flow out of the first chamber. A non-mechanical switch also may be utilized in conjunction with the tool-free latch assembly to control power to the device boards. In particular, the present invention relates to the use of Human induced pluripotent stem derived cells for agent detection and analysis. The interface features an elongated member having a projection projecting away from a top surface in a substantially circular path.