Abstract: A power supply device includes: a control circuit that turns on and off an output transistor to generate an output voltage from an input voltage; an internal power supply voltage generation circuit that generates an internal power supply voltage from an external power supply voltage; and a power switching circuit that switches supply of the internal power supply voltage and supply of the output voltage as a drive voltage of the control circuit.

Abstract: A stator portion includes a stator and a bus bar member. The stator includes three coil groups, each coil group includes two or more coils defined by a single conducting wire including a jumper wire. The bus bar member includes three first bus bars to which end portions on one side of the conducting wires of the three coil groups are connected, each of which includes an external connection terminal, a second bus bar defining a neutral point to which end portions on the other side of the conducting wires are connected, and a resin holder which retains the three first bus bars and the second bus bar. The three first bus bars and the second bus bar overlap only in a radial direction centered on the central axis or an axial direction, and the maximum number of bus bars which overlap is 2.

Abstract: The transfer assistance device includes a front supporting part that supports the torso of the person being assisted; a set of sub supporting parts configured to be adjustable in position with respect to the front supporting part; a driving unit that propels and drives each of the set of sub supporting parts toward the person being assisted being supported by the front supporting part; a force sensor that detects a pressure proportional to propulsion of the sub supporting part by the driving unit and counterforce generated by contact of the sub supporting part with the person being assisted; and a computer that controls the driving unit based on the pressure detected by the force sensor so that tightening force on the person being assisted by the sub supporting part approaches prescribed tightening force.

Abstract: A power supply device includes: a control circuit that turns on and off an output transistor to generate an output voltage from an input voltage; an internal power supply voltage generation circuit that generates an internal power supply voltage from an external power supply voltage; and a power switching circuit that switches supply of the internal power supply voltage and supply of the output voltage as a drive voltage of the control circuit.

Abstract: A power supply device includes: a comparator that compares an error voltage and a slope voltage to generate a comparison signal; a PWM pulse generation portion that generates a PWM pulse based on a clock signal and the comparison signal; an on-time fixed pulse generation portion that uses the comparison signal as a trigger to generate an on-time fixed pulse where an on-time and an on-time number are constant; a one shot pulse generation portion that generates once, when a soft start voltage exceeds a predetermined threshold voltage, a one shot pulse where the on-time and the on-time number are constant; and a selector that selects any one of the PWM pulse, the on-time fixed pulse and the one shot pulse.

Abstract: A power supply device includes: a comparator that compares an error voltage and a slope voltage to generate a comparison signal; a PWM pulse generation portion that generates a PWM pulse based on a clock signal and the comparison signal; an on-time fixed pulse generation portion that uses the comparison signal as a trigger to generate an on-time fixed pulse where an on-time and an on-time number are constant; a selector that selects any one of the PWM pulse and the on-time fixed pulse; and a selector control portion that generates a selector control signal such that any one of the PWM pulse and the on-time fixed pulse is selected according to whether or not the comparison signal is kept at the same logic level over a predetermined mask period.

Abstract: The transfer assistance device includes a front supporting part that supports the torso of the person being assisted; a set of sub supporting parts configured to be adjustable in position with respect to the front supporting part; a driving unit that propels and drives each of the set of sub supporting parts toward the person being assisted being supported by the front supporting part; a force sensor that detects a pressure proportional to propulsion of the sub supporting part by the driving unit and counterforce generated by contact of the sub supporting part with the person being assisted; and a computer that controls the driving unit based on the pressure detected by the force sensor so that tightening force on the person being assisted by the sub supporting part approaches prescribed tightening force.