Abstract: A circuit apparatus includes: a core including a first core portion and a second core portion; and a first heat transfer member arranged between the first core portion and the second core portion. The first heat transfer member is in surface contact with a first side surface of the first core portion and a second side surface of the second core portion. The first heat transfer member is thermally connected to a coil. Thus, the rise in temperature of the core during operation of the circuit apparatuses can be more uniformly suppressed.

Abstract: A servo control device controls a combined position of a first servo system and a second servo system having higher response than response of the first servo system. The servo control device includes a first axis target value creation unit and a correction unit. The first axis target value creation unit creates a first axis target value based on a combined command value which is a position command value of the combined position. The correction unit converts the first axis target value into a first axis command value by using a first transfer function. In addition, the correction unit converts the first axis target value by using a second transfer function, and calculates a second axis command value by subtracting the converted first axis target value from the combined command value.

Abstract: A circuit device and a power converter include a core, a coil surrounding at least a part of the core, and a first heat transfer member being in surface contact with the core. A temperature rise of the core can thus be prevented or reduced.

Abstract: A printed circuit board includes at least one of a first coil pattern disposed on a first main surface and a second coil pattern disposed on a second main surface. The first coil pattern includes a first portion arranged between a first core portion and a second core portion. The second coil pattern includes a third portion arranged between the first core portion and the second core portion. A first heat transfer member is mounted on at least one of the first portion and the third portion. Therefore, temperature increase of at least one of the first portion and the third portion can be suppressed.

Abstract: A printed board includes an insulating layer, and radiation vias penetrating printed board are formed in both a first region overlapping electronic component and a second region outside the first region. A plurality of conductor layers included in printed board are cross-connected to a plurality of radiation vias. Diffusion radiator includes a thermal diffusion plate, a radiation member, and a cooling body. Radiation member is in close contact with one of main surfaces of cooling body, and thermal diffusion plate is in close contact with one of main surfaces of radiation member on the opposite side to cooling body. One of main surfaces of thermal diffusion plate on the opposite side to radiation member is bonded to a conductor layer on the other main surface of printed board so as to close the plurality of radiation vias.

Abstract: Gas diffusion layers, that is, an anode-side gas diffusion layer and a cathode-side gas diffusion layer that are attached to an MEA have irregularities on fiber surfaces of carbon fibers deposited in a layer thickness direction. These irregularities on the fiber surfaces are formed when the fibers are extruded from an extrusion nozzle to be spun.

Abstract: Gas diffusion layers, that is, an anode-side gas diffusion layer and a cathode-side gas diffusion layer that are attached to an MEA have irregularities on fiber surfaces of carbon fibers deposited in a layer thickness direction. These irregularities on the fiber surfaces are formed when the fibers are extruded from an extrusion nozzle to be spun.

Abstract: A melt spinning apparatus includes an apparatus body and a nozzle for extruding melted resin, a primary hot air passage formed around the nozzle, and a secondary hot air passage formed in a zone outside of the primary hot air passage, which are formed in the apparatus body. The primary hot air passage discharges primary hot air onto fibers of the melted resin extruded from the nozzle. The secondary hot air passage discharges secondary hot air to maintain the temperature of the primary hot air. The discharge angle of the secondary hot air from the secondary hot air passage is set in a range of 0° to 50° with respect to the direction of the melted resin extruded from the nozzle. The secondary hot air forms an air curtain that blocks the atmospheric air.

Abstract: A melt spinning apparatus includes an apparatus body and a nozzle for extruding melted resin, a primary hot air passage formed around the nozzle, and a secondary hot air passage formed in a zone outside of the primary hot air passage, which are formed in the apparatus body. The primary hot air passage discharges primary hot air onto fibers of the melted resin extruded from the nozzle. The secondary hot air passage discharges secondary hot air to maintain the temperature of the primary hot air. The discharge angle of the secondary hot air from the secondary hot air passage is set in a range of 0° to 50° with respect to the direction of the melted resin extruded from the nozzle. The secondary hot air forms an air curtain that blocks the atmospheric air.