Abstract: An object is to suppress vibration. The electric compressor includes: an electric motor; a compressor rotated by output of the electric motor; and a motor control device configured to perform drive control on the electric motor. The motor control device includes a control board (50) for controlling the electric compressor. The control board (50) is a multi-layer board including a first layer (50a) on which an insulating IC (51) is mounted and a fourth layer (50c) on which an insulating transformer (52) is mounted. The insulating IC (51) and the insulating transformer (52) are mounted so as to at least partially overlap with each other in planar view.

Abstract: An embodiment includes a first layer substrate (110); a second layer substrate (120) stacked on the first layer substrate (110); an electronic component (210) mounted on a first layer pattern (112) and a second layer pattern (122); and a temperature sensor (220) mounted on the first layer substrate (110) at a position not in contact with and adjacent to the electronic component (210) and configured to acquire a temperature of the electronic component (210). The second layer pattern (122) includes a second layer main pattern part (122a) overlapping with the electronic component (210) when planarly viewed, the electronic component (210) being mounted thereon, and a second layer expanded pattern part (122b) formed to overlap with the temperature sensor (220) when planarly viewed and connected to the second layer main pattern part (122a).

Abstract: A system according to the present invention comprises: a power source which generates a first low voltage from a supplied high voltage; a capacitor which suppresses fluctuations in the high voltage; and a first device which operates by using the first low voltage as an electric power source and which increases its own current consumption when supply of the high voltage to the power source has stopped.

Abstract: A system according to the present invention comprises: a power source which generates a first low voltage from a supplied high voltage; a capacitor which suppresses fluctuations in the high voltage; and a first device which operates by using the first low voltage as an electric power source and which increases its own current consumption when supply of the high voltage to the power source has stopped.