摘要:
A structure has a printed board carried by a metal chassis. A printed board carrying chassis analyzing system, a printed board carrying chassis analyzing method, a printed board carrying chassis structure, and a printed board carrying chassis analyzing program are provided to achieve a screw-fastened arrangement for predicting unnecessary radiation frequencies and for reducing unnecessary radiation. An equivalent circuit model including a printed board power and ground plane pair, a pair of confronting surfaces of a printed board and a chassis, and screw-fastened grounding posts is generated and analyzed to predict unnecessary radiation frequencies and unnecessary radiation reductions and to select a screw-fastened arrangement for reducing unnecessary radiation.
摘要:
A structure has a printed board carried by a metal chassis. A printed board carrying chassis analyzing system, a printed board carrying chassis analyzing method, a printed board carrying chassis structure, and a printed board carrying chassis analyzing program are provided to achieve a screw-fastened arrangement for predicting unnecessary radiation frequencies and for reducing unnecessary radiation. An equivalent circuit model including a printed board power and ground plane pair, a pair of confronting surfaces of a printed board and a chassis, and screw-fastened grounding posts is generated and analyzed to predict unnecessary radiation frequencies and unnecessary radiation reductions and to select a screw-fastened arrangement for reducing unnecessary radiation.
摘要:
The present device is equipped with a first dielectric layer (1) and a second dielectric layer (2), and an antenna conductor (4), a ground conductor (5), and pad conductors (6), which are provided so as to sandwich the first dielectric layer (1) and the second dielectric layer (2) in the lamination direction respectively. The first dielectric layer (1) is arranged between the antenna conductor (4) and the ground conductor (5). The second dielectric layer (2) is arranged between either the antenna conductor (4) or the ground conductor (5), and pad conductors (6). A connection conductor (7) for electrically connecting either the antenna conductor (4) or the ground conductor (5), whichever remains, and the pad conductors (6) is provided.
摘要:
Provided are a polylactic acid resin composition excellent in transparency, heat resistance, and migration resistance, and excellent in productivity at the time of the mold forming thereof, and a resin molded article thereof. The polylactic acid resin composition includes a polylactic acid; a reaction product of at least one selected from the group consisting of sorbitol, mannitol, and dehydration condensates thereof, an alkylene oxide mainly formed of ethylene oxide, and a fatty acid having 8 to 24 carbon atoms; and a fatty acid amide having a hydroxyl group.
摘要:
Provided are a polylactic acid resin composition excellent in transparency, heat resistance, and migration resistance, and excellent in productivity at the time of the mold forming thereof, and a resin molded article thereof. The polylactic acid resin composition includes a polylactic acid; a reaction product of glycerin, an alkylene oxide mainly formed of ethylene oxide, and a fatty acid having 12 to 24 carbon atoms; and a fatty acid amide having a hydroxyl group.
摘要:
A flame retarded foamed plastic composition comprises a polystyrene type resin; a brominated flame retardant having a Br content greater than 60% by weight and a 5 wt % loss temperature of 190-320° C.; a hindered amine of 4-hydroxy-2,2,6,6-tetramethylpiperidine carboxylate series, and a blowing agent.
摘要:
Provided are a polylactic acid resin composition excellent in impact resistance, migration resistance, and heat resistance, and excellent in productivity at the time of the mold forming thereof, and a resin molded article thereof. The polylactic acid resin composition includes a polylactic acid; a reaction product of at least one of a polyol and a polyol dehydration condensate, an alkylene oxide mainly formed of ethylene oxide, and a fatty acid having 12 to 24 carbon atoms; and a fatty acid amide.
摘要:
A printed substrate design system designs a substrate configuration of a printed substrate on which an IC and a passive component are mounted, and a cable is connected to the printed substrate. The printed substrate design system includes: an input unit that receives input of printed substrate design information; an EMI characteristic derivation unit that derives an EMI characteristic from the input printed substrate design information received by the input unit, the EMI characteristic being a characteristic of EMI occurring from the printed substrate; a determination criteria storage unit that stores an EMI allowable condition being a condition of an allowable EMI characteristic of the printed substrate; an EMI condition determination unit that compares the EMI characteristic derived by the EMI characteristic derivation unit with the EMI allowable condition stored in the determination criteria storage unit, the EMI condition determination unit determining whether the EMI characteristic of the printed substrate satisfies the EMI allowable condition; a substrate configuration change unit that changes an internal configuration of the printed substrate in a case where the EMI condition determination unit has determined that the EMI allowable condition is not satisfied, the substrate configuration change unit setting design information of the printed substrate with the re-changed structure to design information for deriving the EMI characteristic in the EMI characteristic derivation unit; and an output unit that outputs a printed substrate configuration that satisfies the EMI allowable condition in a case where the EMI condition determination unit has determined the EMI allowable condition is satisfied.
摘要:
An objective of the present invention is to provide a wiring check device with which it is possible, with respect to finding a risk of deterioration of electromagnetic noise characteristics, to take into account the presence of a plane conductor other than a plane conductor located closest to the wiring. A wiring check device according to the present invention includes: a wiring information acquisition unit which acquires wiring information on a wiring which is included in a printed substrate having a multi-layered structure; a plane conductor detection unit which detects a plurality of plane conductors on multiple layers among the multi-layered structure which include a layer located closest to the wiring; a plane conductor overlap configuration detection unit which detects a plane conductor overlap configuration of a configuration in which the plurality of plane conductors overlap; and a bridge point detection unit which detects a point where the wiring steps over a plane conductor excluded region in the plane conductor overlap configuration on the basis of a wiring-plane conductor overlap configuration of a configuration in which the wiring and the plane conductor overlap configuration are overlapped.
摘要:
Provided are a polylactic acid resin composition excellent in transparency, heat resistance, and migration resistance, and excellent in productivity at the time of the mold forming thereof, and a resin molded article thereof. The polylactic acid resin composition includes a polylactic acid; a reaction product of at least one selected from the group consisting of sorbitol, mannitol, and dehydration condensates thereof, an alkylene oxide mainly formed of ethylene oxide, and a fatty acid having 8 to 24 carbon atoms; and a fatty acid amide having a hydroxyl group.