Abstract: An electronic subassembly is provided that includes at least one integrated circuit which is housed in a dimensionally stable plastic package and which is connected in an electrically conductive manner to at least one externally accessible, electrically conductive contact prong on the plastic package. An electronic assembly is also provided with such an electronic subassembly, and a method for producing an electronic assembly. According to the invention, provision is made for at least one recess to be provided in the plastic package, designed in particular as an indentation, in which at least one contact prong is arranged such that it is exposed.

Abstract: A pumping station feeds hydraulic energy to a grid or raises water from a low level to a high level. It includes, in particular, a transformer connected between an alternator and a grid, with a circuit breaker between the transformer and the grid. It further includes resistance for limiting the surge current through the transformer. This resistance lies in the range of 500 ohms to 100,000 ohms and is inserted for a period lying in the range 15 milliseconds to 19 milliseconds when the circuit breaker is closed, and a controller for ensuring that the circuit breaker closes on the unloaded transformer only at an instant that is no more than 1.2 milliseconds from an extreme value in the grid voltage.