摘要:
Disclosed are a transmission system and a device of small scale, low cost and low power for transmitting signal of a rate over 1 Gbps using a small scale and low loss ultrawide band pass filter (UWBPF). The transmission system comprises the steps of generating pulse signal by a short pulse generator, band-limiting the pulse signal by passing it through a waveshape forming filter, and transmitting the resulting pulse signal in a certain frequency band through a UWBPF, and receiving and passing the signal wave through a UWBPF of the same frequency range and introducing the signal wave through a pulse detector into the determining part. The UWBPF used is prepared by forming a distribution constant circuit on a lossy substrate having low-pass function.
摘要:
In a surface mounting type non-reversible circuit element, a supporting member is provided with a first yoke, while a plurality of terminal members made of a metal material are mounted on the supporting member 11. The terminal members own contact portions, and connection portions. The contact portions are made in contact to terminal portions of center electric conductors. The connection portions are exposed from a lower surface of the supporting member, and are located at the same surface as a lower surface of a second yoke. The terminal members can be surface-mounted in conjunction with the second yoke so as to improve productivity of the non-reversible circuit element, while assembling work thereof can be carried out in a simple manner.
摘要:
A non-reversible circuit device includes input-output terminals formed on one end side of first, second, and third central conductors, respectively. The other ends thereof are introduced to one surface of a laminated substrate to form ground terminals. A ferrimagnetic member has electrode portions and is disposed on the one surface of the laminated substrate, so that the ground terminals are connected to the electrode portions. Thus, the ground terminals of the central conductors can be positioned so as not to project from the ferrimagnetic member. Thus, the laminated substrate can be reduced in size.
摘要:
A ceramic granule containing a raw material ceramic powder and a binder component comprising a polyvinyl alcohol, in which the polyvinyl alcohol possesses an average saponification degree of not less than 90.0 mol % and not more than 98.0 mol % excels in the flowability, the mold-packing property, and the anti-sticking property, and has a well-balanced properties of conflicting properties of the crushing property at a low pressure and the anti-collapse property, and capable of continuously producing a ceramic product.
摘要:
The electronic circuit unit of the present invention is provided with the broad width lands and the thin width lands tied with the broad width lands, which are configured by a solder resist that is formed on the surface of the circuit board. Owing to this configuration, the solders placed on the thin width lands are drawn toward the broad width lands, which increases the quantity of the solder buildup on the broad width lands, and accompanied with this increase, swells the heights of the solder buildup on the broad width lands. Thus, the electronic circuit unit of the present invention ensures the soldering.
摘要:
Granule for forming ferrite is provided by mixing powders of ferrite raw material, polyvinyl alcohol as a binder and polyethylene glycol added as plasticizer and having molecular weight being 1000 to 6000, and forming granules.
摘要:
An aromatic polyester having the following structural units (1) to (5) wherein the amount of the structural unit (1) is 40 to 70% based on the total of the all structural units, (2)/(3) is from 0.7 to 0.95, (4)/(5) is from 1.1 to 2.4, and {(2)+(3)}/{(4)+(5)} is from 0.9 to 1.1: wherein Ra, Rb, RC, Rd, Re and Rf represents a lower alkyl group, lower alkoxy group, phenyl group or halogen atom, and n represents an integer from 0 to 3, is provided, and the molded article made of this polyester has excellent heat resistant and consequently is not easily deformed.
摘要:
A method for manufacturing a prepreg in which a reinforcing substrate is impregnated with a thermosetting matrix resin. In the method, the reinforcing substrate is moved in a traveling direction. The thermosetting matrix resin is supplied to an outer circumferential surface of a transferring roller. The thermosetting matrix resin which substantially contains no solvent and which is in a molten state is transferred from the outer circumferential surface of the transferring roller to a first surface of a reinforcing substrate while the reinforcing substrate moves. The thermosetting matrix resin which is transferred to the first surface is forced to permeate through the reinforcing substrate by pressing at least one pressing roller on the thermosetting matrix resin transferred to the first surface while the reinforcing substrate moves. The reinforcing substrate impregnated with the thermosetting matrix resin is heated to semi-cure the thermosetting matrix resin.
摘要:
Disclosed is a method for the preparation of a ferrite beads composition suitable for compression-molding into a compression-molded ferrite body to be subjected to a sintering heat treatment to give a sintered ferrite member having usefulness as an electromagnetic material. The method comprises the steps of: forming ferrite beads from ferrite particles and an organic binder compound; and uniformly mixing the ferrite beads with a limited amount of a higher fatty acid ester of a hexitan compound such as sorbitan mono- or sesquioleate. The ferrite beads composition of the invention is advantageous not only in respect of the behavior in compression molding such as high density of the compression-molded body, low withdrawal pressure from the metal mold and a decrease in the phenomenon of springback but also in respect of the properties of the ferrite body after sintering.
摘要:
A stretch label adapted to be fitted to a container includes a stretch film, having a self-shrinking property, and a printing layer. The stretch film, in turn, includes a substrate made from an ethylene-vinyl acetate copolymer or a mixture of a low density polyethylene and an ethylene-vinyl acetate copolymer, and a surface layer made of a polyolefin resin. The surface layer is harder than the substrate and is provided on at least one surface of the substrate. The surface layer is the outer surface layer of the stretch label when the stretch label is fitted to the container.