Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electrical current, in particular, power inverters, electric junction boxes, battery chargers, and electric power converters for automotive and industrial appliances, namely, power converters with power conversion by using semiconductors such as SiC, IGBT, MOSFET; mechanisms for coin-operated apparatus; cash registers, calculating machines; computers and comput...