The invention relates to a semiconductor device and a method of manufacturing an electronic device. Skew is formed on at least one of a stator provided with concentrated windings and a rotor, and the windings of different phases in a groove for windings are brought into contact with each other directly or via an insulating material. A pair of oar direction-of-motion reversal assemblies are provided which provide a pair of oar handle portions and a pair of oar blade portions. The pathogen sensor senses a level of airborne pathogens in the conditioned space and generates a signal indicative of the level of pathogens sensed. The heat roller has such a thermal capacity that it can be warmed up in 10 seconds or less. The base material of the braze alloy has the same composition as the composition of the base metal of the vane.