Abstract: An absolute encoder configured to, when a rotation range of a measurement target member is limited by a brake mechanism, generate an AB-phase signal and a Z-phase signal for calculating a rotation angle of the measurement target member. The absolute encoder includes a brake mechanism, a plurality of Z-phase-signal-detection-target portions each having a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion, a plurality of AB-phase-signal-detection-target portions each located between a Z-phase-signal-rise-detection-target portion and a Z-phase-signal-fall-detection-target portion that are adjacent to each other in a circumferential direction, to thereby form a plurality of restriction ranges each including at least one of the Z-phase-signal-rise-detection-target portions and at least one of the Z-phase-signal-fall-detection-target portions.

Abstract: An outboard motor performs assist control of assisting rotation of a crankshaft and performs power running rotation speed range expansion control of expanding a power running rotation speed range of a rotary electric machine in a state in which the crankshaft is rotated at a rotation speed within a cranking rotation speed range due to rotation of a rope reel.

Abstract: An outboard motor performs assist control of assisting rotation of a crankshaft and performs power running rotation speed range expansion control of expanding a power running rotation speed range of a rotary electric machine in a state in which the crankshaft is rotated at a rotation speed within a cranking rotation speed range due to rotation of a rope reel.

Abstract: A power supply system for an outboard motor includes a first terminal configured to supply electric power converted by a converting device to an engine accessory and to be capable of supplying the electric power to a portion external to an engine cover and a second terminal branched from a branch portion between the converting device and the engine accessory, configured to be capable of supplying the electric power to a portion external to the engine cover at a voltage higher than the voltage of the first terminal.

Abstract: An outboard motor power generation system includes an engine, a power generator, a converting device configured to convert alternating-current power into direct-current power, an engine cover configured to cover the engine, the power generator, and the converting device, a battery, and a transformer provided on an electric pathway between the converting device and the battery and configured to raise the voltage of the direct-current power output from the converting device relative to the charge voltage of the battery.

Abstract: An outboard motor power generation system includes an engine, a power generator, a converting device configured to convert alternating-current power into direct-current power, an engine cover configured to cover the engine, the power generator, and the converting device, a battery, and a transformer provided on an electric pathway between the converting device and the battery and configured to raise the voltage of the direct-current power output from the converting device relative to the charge voltage of the battery.

Abstract: A power supply system for an outboard motor includes a first terminal configured to supply electric power converted by a converting device to an engine accessory and to be capable of supplying the electric power to a portion external to an engine cover and a second terminal branched from a branch portion between the converting device and the engine accessory, configured to be capable of supplying the electric power to a portion external to the engine cover at a voltage higher than the voltage of the first terminal.

Abstract: A protection circuit equipped magnetic energy recovery switch including a magnetic energy recovery switch having at least two reverse-conductive type semiconductor switches and two capacitors employs a protection circuit and control method for protecting the capacitors against an overvoltage or short-circuited discharge, and protecting the reverse-conductive type semiconductor switches and a load against an overvoltage or overcurrent, and can be used as a controller or a current limiter.

Abstract: A power inverter (1) is provided with a full-bridge circuit (10), a shunt capacitor (CP), and a control circuit (20). The control circuit (20) controls the on/off state of each reverse-conductive semiconductor switch (SW1 to SW4) at a switching frequency of not more than the resonance frequency determined by the capacitance of the shunt capacitor (CP) and the inductance of an inductive load (LD) in such a matter than when a first reverse-conductive semiconductor switch (SW1) and a fourth reverse-conductive semiconductor switch (SW4) are in the on-state, a second reverse-conductive semiconductor switch (SW2) and a third reverse-conductive semiconductor switch (SW3) are brought into the off-state, and that when the first reverse-conductive semiconductor switch (SW1) and the fourth reverse-conductive semiconductor switch (SW4) are in the off-state, the second reverse-conductive semiconductor switch (SW2) and the third reverse-conductive semiconductor switch (SW3) are brought into the on-state.

Abstract: A protection circuit equipped magnetic energy recovery switch including a magnetic energy recovery switch having at least two reverse-conductive type semiconductor switches and two capacitors employs a protection circuit and control method for protecting the capacitors against an overvoltage or short-circuited discharge, and protecting the reverse-conductive type semiconductor switches and a load against an overvoltage or overcurrent, and can be used a controller or a current limiter.

Abstract: An abnormality sensing device for use with gas-insulated equipment senses a faulted section by comparing a change in the quantity of light between a light emitting element and a light receiving element.

Abstract: The present invention provides an apparatus for treating the top ends of flexible cords or filaments. It comprises holding means for holding articles having flexible cords, delivery means for delivering said holding means in a predetermined direction, cylindrical grinding means disposed at a position adjacent to a delivery passage for delivering said holding means, and means for rotating said cylindrical grinding means around its own axis and around an axis at right angles to its own axis. By virtue of the feature that the cylindrical grinding means is rotated around its central axis and around the axis rectangularly crossing the central axis, the top ends of flexible cords, such as bristles of toothbrushes, can be polished and ground from all the directions and very smooth and round outer ends can be obtained at high efficiency and high rate.