Abstract: An electrolytic system includes, a power generator that outputs a first DC power, a plurality of converters each of which converts the first DC power into a second DC power according to a target duty ratio, and outputs voltage information and current information of the second DC power, a plurality of electrolyzers each of which receives the second DC power output from each of the plurality of converters and generates a gas, a control circuit that outputs control information by which the first DC power approaches a maximum power, based on a voltage value and a current value of the first DC power, and a selection circuit that outputs the target duty ratio, and a selection signal as to whether to select each of the plurality of electrolyzers and each of the plurality of converters, based on the control information and the voltage information and the current information.

Abstract: A power-supply apparatus includes a power-supply circuit to which an input voltage and an input current are input, to include a switching element to be controlled by a control signal so as to generate an output voltage and an output current, a memory, and a processor coupled to the memory and the processor to calculate a first duty ratio of the control signal so that the output voltage approaches a target voltage, calculate a second duty ratio of the control signal for the switching element, based on the input voltage, the input current, the output voltage, and the output current, detect deterioration of the power-supply circuit, based on the first duty ratio and the second duty ratio, generate the control signal of the first duty ratio when the power-supply circuit has not deteriorated, and generate the control signal for stopping the power-supply circuit when the power-supply circuit has deteriorated.

Abstract: A differential amplifier which does not have an effect of noise resistance deterioration, waveform distortion, and a lower bandwidth while having a wide input range is realized. The differential amplifier does not cause deterioration in a signal quality due to an increase in an input load, and it is not necessary to additionally provide a configuration for generating a reference voltage. The differential amplifier includes a differential amplification circuit and an output circuit for amplifying and outputting a differential output from the differential amplification circuit.

Abstract: An electrolysis system includes a power generator configured to output a first direct current power; a plurality of DC-DC converters respectively configured to convert the first direct current power into a second direct current power and output voltage information and current information of the second direct current power; a plurality of electrolyzers respectively configured to receive the second direct current power output from a DC-DC converter and generate gas; a control circuit configured to output control information that maximizes the first direct current power based on a voltage value and a current value of the first direct current power; and a processor configured to output the target current value and a selection signal indicating whether or not to select each of the plurality of electrolyzers to each of the plurality of respective DC-DC converters, based on the control information, the voltage information and the current information.

Abstract: A power supply device includes: a memory; and a processor coupled to the memory and the processor configured to: determine a duty ratio of a control signal of a switching element in a power supply circuit so that an output voltage of the power supply circuit approaches a target voltage; compute an acceptable range of a duty ratio based on an output current of the power supply circuit detected by a current detecting circuit; output the duty ratio when the duty ratio is inside the acceptable range; and stop the power supply circuit when the duty ratio is outside the acceptable range.

Abstract: An inductor apparatus includes: a substrate including an electrical insulation property and a non-magnetic material; and a plurality of inductors disposed in the substrate so as to extend from a first surface of the substrate to a second surface of the substrate, each of the plurality of inductors including: an inductor conductive part that has an electrical conductivity and extends in a thickness direction of the substrate; and a magnetic layer that covers a side of the inductor conductive part and include a relative permeability and a soft magnetic material.

Abstract: A power supply apparatus includes a DC-DC converter configured to convert an input voltage into an output voltage in accordance with a duty cycle which is decided by a difference of a third signal, a first photo coupler configured to output a first signal corresponding to the output voltage, a converter configured to convert the output voltage into a digital signal, and a second photo coupler configured to output a second signal corresponding to the digital signal, a memory, and a processor coupled to the memory and configured to calculate a third signal on the basis of the difference between the first signal and the second signal, and control the DC-DC converter so that the third signal is to be zero.

Abstract: An inductor apparatus includes: a substrate including an electrical insulation property and a non-magnetic material; and a plurality of inductors disposed in the substrate so as to extend from a first surface of the substrate to a second surface of the substrate, each of the plurality of inductors including: an inductor conductive part that has an electrical conductivity and extends in a thickness direction of the substrate; and a magnetic layer that covers a side of the inductor conductive part and include a relative permeability and a soft magnetic material.

Abstract: A capacitor life diagnosis apparatus includes ringing detection circuitry that detects ringing of an output voltage of a power source including a capacitor at an output end, and signal generation circuitry that generates a signal indicating a life of the capacitor based on the ringing detected by the ringing detection circuitry.

Abstract: A differential amplifier which does not have an effect of noise resistance deterioration, waveform distortion, and a lower bandwidth while having a wide input range is realized. The differential amplifier does not cause deterioration in a signal quality due to an increase in an input load, and it is not necessary to additionally provide a configuration for generating a reference voltage. The differential amplifier includes a differential amplification circuit and an output circuit for amplifying and outputting a differential output from the differential amplification circuit.

Abstract: An electronic apparatus includes a housing; a substrate disposed on the inner side of the housing; a plurality of temperature sensors disposed on the substrate; and a processor. The processor performs a procedure including calculating heat source temperatures of a plurality of heat sources disposed on the substrate from temperatures measured by the temperature sensors by using a first heat transfer model not including a first parameter representing a transient response of heat transfer from the heat sources to the temperature sensors; and calculating a surface temperature of a surface of the housing from the heat source temperatures by using a second heat transfer model including the first parameter and a second parameter representing a transient response of heat transfer from the heat sources to the surface.

Abstract: A power supply device includes: a memory; and a processor coupled to the memory and the processor configured to: determine a duty ratio of a control signal of a switching element in a power supply circuit so that an output voltage of the power supply circuit approaches a target voltage; compute an acceptable range of a duty ratio based on an output current of the power supply circuit detected by a current detecting circuit; output the duty ratio when the duty ratio is inside the acceptable range; and stop the power supply circuit when the duty ratio is outside the acceptable range.

Abstract: A power supply unit includes: a relay that includes a first input terminal to which primary alternating-current power is input and a second input terminal to which secondary alternating-current power is input, and outputs one of the primary alternating-current power and the secondary alternating-current power; a first power conversion unit that is coupled to an output terminal of the relay, and converts alternating-current power output from the relay, into direct-current power; a second power conversion unit that is coupled to an output side of the first power conversion unit and converts output power of the first power conversion unit into direct-current power of a predetermined voltage; a power output terminal that outputs the direct-current power converted by the second power conversion unit; and a control unit that couples the first input terminal to the output terminal or couples the second input terminal to the output terminal.

Abstract: A mechanoluminescent material is obtained by mixing a phosphate compound and europium-activated strontium aluminate particles into slurry; grinding the slurry into ground slurry; and drying the ground slurry, wherein the rate of change calculated from a formula (A?B)/A×100 is 10% or less, where A is the strontium content in the obtained mechanoluminescent material, and B is the strontium content in the mechanoluminescent material after 168 hours of storage in an atmosphere at a temperature of 85° C. and a relative humidity of 85%.

Abstract: A capacitor life diagnosis device includes: a first fluctuation detecting unit configured to detect a maximum value of fluctuation in output voltage of a first capacitor every fixed time; and an output unit configured to predict a residual life of the first capacitor on the basis of temporal transition of the maximum value of fluctuation in the output voltage detected by the first fluctuation detecting unit, and output a signal indicating the residual life of the first capacitor.

Abstract: A planar type transformer includes: a multilayer substrate including a primary main winding pattern and a secondary main winding pattern that perform first power transmission, the primary main winding pattern and the secondary main winding pattern being stacked with an insulating layer interposed between the primary main winding pattern and the secondary main winding pattern; and an auxiliary winding that is disposed outside the multilayer substrate and performs second power transmission between the auxiliary winding and the primary main winding pattern or the secondary main winding pattern.

Abstract: The present invention aims to provide a mechanoluminescent material which is excellent in mechanoluminescent properties and can achieve a mechanoluminescence intensity sufficiently suited to practical use, a raw material composition for producing the mechanoluminescent material, and a method for producing a mechanoluminescent material. The mechanoluminescent material of the present invention includes strontium aluminate as a base material, a Eu ion, and at least one ion selected from the group consisting of Nd, Dy, and Ho. An amount of the Eu ion contained in the mechanoluminescent material is 0.0001 to 0.1 mol per mole of the strontium aluminate. An amount of the at least one ion selected from the group consisting of Nd, Dy, and Ho contained in the mechanoluminescent material is, as the sum of amounts of the three ions Nd, Dy, and Ho, 0.0001 to 0.01 mol per mole of the strontium aluminate.

Abstract: A power supply device has a first delay circuit which delays a first clock signal and outputs a second clock signal, a pulse signal generating circuit which generates a first pulse signal, a first transistor which connects an output node to a power supply potential node according to the first pulse signal, a second transistor which connects the output node to a reference potential node according to the first pulse signal, an integration circuit which integrates and outputs a signal of the output node, and a comparator which compares an output signal of the integration circuit and the reference signal, wherein the pulse signal generating circuit generates the first pulse signal in synchronization with the first clock signal, the second clock signal and the output signal of the comparator, and the frequency of the first pulse signal is constant irrespective of voltage of the output node.

Abstract: A planar type transformer includes: a multilayer substrate including a primary main winding pattern and a secondary main winding pattern that perform first power transmission, the primary main winding pattern and the secondary main winding pattern being stacked with an insulating layer interposed between the primary main winding pattern and the secondary main winding pattern; and an auxiliary winding that is disposed outside the multilayer substrate and performs second power transmission between the auxiliary winding and the primary main winding pattern or the secondary main winding pattern.

Abstract: A vehicle seat having an upwardly-foldable seat cushion that includes an engagement piece projecting from the rear end of the seat cushion and an under cover below the seat having an upper panel portion having an upwardly sloped surface. A forwardly-and-rearwardly extending guide groove formed in that upper panel portion which allows the engagement piece to be moved therein, without its contact with the upwardly sloped surface of the upper panel portion, when the rear end of the seat cushion is slidingly brought to a lower end of a set back. Ribs are formed in a bottom surface of the guide groove. The guide groove allows forward-and-rearward movement of the engagement piece therein, so that the engagement piece can be pressed against and frictionally engaged with the lower end of the seat back, without being caught by the upwardly sloped surface of the upper panel portion.