Abstract: A semiconductor device includes: a chip having a first main surface on one side and a second main surface on the other side; a first region of a first conduction type which is formed on the second main surface side in the chip; a second region of a second conduction type which is formed on the first main surface side of the chip and forms a pn-junction portion with the first region; a device region which is provided on the first main surface; a first groove structure including a first groove, a first insulating film, and a first polysilicon, and partitioning the device region; and a second groove structure including a second groove, a second insulating film, and a second polysilicon, and partitioning the device region on a device region side of the first groove structure.

Abstract: An apparatus that reduces leakage current and noise in various environments. The apparatus includes a motor, an inverter to supply power to the motor and a plurality of switching elements configured to convert input DC power into three-phase AC power, and a processor to control the plurality of switching elements. The processor generates a carrier, obtains a rising and falling edge timing of a PWM control signal of each phase based on superposition of a zero phase voltage, and drives a motor by shifting the PWM control signal of each phase to allow a rising edge timing and a falling edge timing of a PWM control signal of one phase among the PWM control signal of the each phase to be different from a rising edge timing and a falling edge timing of a PWM control signal of other phase among the PWM control signal of the each phase.

Abstract: Provided is an inverter for reducing electric power consumption and noise.

Abstract: A washing machine is provided. The washing machine includes an inner tub, a motor connected to the inner tub through a rotating shaft, an inverter circuit operatively connected to the motor and comprising three pairs of bridged switching elements, and at least one processor configured to provide a modulation signal to the inverter circuit to turn on or off the three pairs of bridged switching elements so as to convert DC power into AC power. The at least one processor is further configured to provide the modulation signal to two pairs of switching elements among the three pairs of bridged switching elements for a first time period in a first mode, provide the modulation signal to the three pairs of bridged switching elements for a second time period in a second mode, ad alternately perform the first mode and the second mode.

Abstract: An apparatus capable of efficiently reducing leakage current and noise in various environments by shifting a pulse signal of an inverter configured to control a three-phase drive motor, and a control method of the same are provided. In accordance with an aspect of the disclosure, an apparatus is provided. The apparatus includes at least one motor, an inverter configured to supply power to the at least one motor and a plurality of switching elements configured to convert input DC power into three-phase AC power and output the three-phase AC power, and at least one processor configured to control the plurality of switching elements.

Abstract: Provided is temperature-controlled air circulation type bedding which introduces the blowoff air generated by temperature control unit into an air flow passage provided around a bedding body so as to cool or warm the body of a person in the bedding, controls the blowoff air temperature to form a comfortable sleeping environment irrespective of an external atmosphere temperature, suppresses discharge of carbon dioxide gas, etc. with a compact configuration, and has low power consumption. The temperature-controlled air circulation type bedding includes a temperature control unit 2 which controls the blowoff air temperature by a cooling or heating action, and a bedding body 3 which provides an air flow passage 27 which allows the blowoff air from the temperature control unit to be introduced and circulated therethrough, and cools or warms the inside thereof.

Abstract: Provided is a vehicle-mounted temperature control device (2) capable of suppressing resource wasting or environmental contamination during an idling stop, an easily installed vehicle-mounted refrigeration unit which blows off cooled or warmed air to the inside of a vehicle, and selectively cooling or warming not only a napping cabin behind the driver's seat, but also the driver's seat. The vehicle-mounted temperature control device includes a refrigeration unit having a refrigeration cycle in which a compressor, a condenser, and an evaporator to which driving electric power is supplied by a battery 5 are annularly connected; a temperature control chamber formed from a heat-insulating wall body having a blowoff air trunk and a return air trunk and having a circulation fan and the evaporator in the refrigeration cycle housed therein; and a machine chamber in which the compressor, the condenser, and a radiation fan which cools the compressor and condenser are disposed.

Abstract: A refrigerator stated is characterized in that it includes a machine room (14) formed on a lower part of a rear of a main body of the refrigerator; a refrigerant compressor (12) installed offset to one side in the machine room (14) in a width direction; and a cooler (9) for receiving a refrigerant from the refrigerant compressor (12) and cooling an inside of a storage chamber; wherein the cooler (9) is arranged inside the refrigerator via a heat insulating wall (3a) of the main body above the refrigerant compressor (12) arranged on one side of the machine room (14) and at a position on an opposite side of the refrigerant compressor (12) in a width direction; and control and power source boards (21) of the refrigerator are arranged in another wide space of the refrigerant compressor (12) in the machine room (14) in a width direction.