摘要:
An electronic equipment of the present invention includes housings and, a substrate, electronic components mounted on the substrate, a heatsink which is connected to the electronic component, connection means and for connecting the heatsink to the housing depending on a temperature in the housing and for forming a heat conduction path from the electronic component to the housing, and a fan for flowing cooling air into the housing. The substrate, the electronic component, the heatsink, the connection means, and the fan are arranged in the housing. Depending on the temperature, the connection means promotes heat transfer from the heatsink to the housing, which has a large radiation area, in addition to a cooling (radiation) operation using the fan. As a result, the cooling of the electronic component inside the housing is promoted during operation. By this cooling effect, the present invention improves reliability and safety against heat generation of the electronic component (in particular, a central processing unit).
摘要:
A printed-circuit board characteristic evaluation system is basically configured by an input device, a data processing device, a storage device and an output device. Herein, the input device inputs layout information representing an overall layout of a printed-circuit board installing at least one active component, from which layout information data regarding a power supply circuit is extracted and is stored in the storage device. The layout information data is converted to electric circuit information representing an equivalent circuit model with respect to a selected side of the printed-circuit board. Then, calculations are performed based on the layout information data to produce impedance characteristics with respect to the power supply circuit. A decision is made as to whether resonance is caused to occur in the power supply circuit on the basis of results of comparison of the impedance characteristics. The output device outputs the impedance characteristics as well as resonance information. If it is determined that resonance is caused to occur in the power supply circuit, the system changes the layout information, from which new layout information data is being extracted. In addition, a resonance suppression technique (e.g., installation of a decoupling capacitor) is applied to a certain point of the power supply circuit or a prescribed power terminal connecting position. Thus, the system is capable of performing evaluation as to whether printed-circuit boards are well designed to suppress variations of power voltages while inhibiting radiation of unwanted electromagnetic waves from occurring due to resonance of power supply circuits.
摘要:
A process for producing a magnetic recording medium having a non-magnetic layer on a non-magnetic support and having a magnetic layer on the non-magnetic layer is provided. A process for producing a magnetic recording medium which comprises applying a non-magnetic layer coating material onto a non-magnetic support and drying the coating material to form a non-magnetic layer, and then applying a magnetic layer coating material more excessively than an intended magnetic layer-wet thickness onto the non-magnetic layer by using a die nozzle coating followed by scraping excess amounts of the magnetic layer coating material to the intended magnetic layer-wet thickness by means of a bar to form a magnetic coating layer.
摘要:
The control system for a plant comprises a rectifier connected to a network. The rectifier has a unit for acquiring precise time, a unit for sampling the state quantity on the precise time to convert the state quantity into digital data and a unit for adding the precise time at each sampling timing to the digital data to transmit the digital data each having the precise time to the network. A breaker is connected to the network. The breaker has a unit for receiving, through the network, a control command thereto and a unit for transmitting an operating state thereof to the network. A control apparatus is connected to the network. The control apparatus has a unit for performing an operation process on the digital data transmitted through the communication network and the operating state of the breaker transmitted therethrough and a unit for transmitting the control command through the communication network to the breaker in response to a result of the control operation process of the performing unit.
摘要:
In a method of manufacturing a polarization-maintaining optical fiber coupler by heating lengthwise portions of two polarization-maintaining optical fibers extending side by side, and elongating the heated portions to thereby form a fused-elongated section, elongation is terminated when the cyclic changes in a coupling ratio of two polarized waves according to an elongation length at a wavelength in use are both within first two cycles, so that the coupling ratio of one of the polarized waves is equal to or less than 10% and the coupling ratio of the other one of the polarized waves is equal to or greater than 90%. This method can provide a polarization-maintaining optical fiber coupler whose coupling ratio has a large dependency on polarization with a short elongation length.
摘要:
A food packaging stretch film made of a resin containing substantially no chlorine and having a storage modulus (E′) of from 5.0×108 to 5.0×109 dyn/cm2 and a loss tangent (tan &dgr;) of from 0.2 to 0.8, as measured by dynamic viscoelasticity measurement at a frequency of 10 Hz at a temperature of 20° C.
摘要翻译:由基本上不含氯并且具有5.0×10 8至5.0×10 9 dyn / cm 2的储能模量(E')为5.0×10 9 dyn / cm 2的损耗正切(tanδ)为0.2至0.8的树脂制成的食品包装拉伸膜,通过动态 在20℃的温度下以10Hz的频率进行粘弹性测量
摘要:
The purpose of the present invention is to provide a nonaqueous-electrolyte battery that exhibits high charge/discharge performance, i.e. high input/output performance, over a long period of time. This nonaqueous-electrolyte battery, in which a nonaqueous electrolyte and a group of electricity-generation elements that each have a positive electrode, a negative electrode, and a separator that isolates said positive electrode and negative electrode are sealed inside a battery case, is characterized in that the negative electrodes contain graphite having an edge/surface ratio (fe), as defined by the following equation, of 0.03-0.1. fe=(2B/La+T/d002)/(2B/d100+T/d002). In this equation, B represents the mean grain diameter of the graphite, T represents the grain thickness, La represents the a-axis crystallite size, d002 represents the spacing between (002) planes, and d100 represents the spacing between (100) planes.
摘要翻译:本发明的目的是提供一种在长时间内表现出高的充放电性能,即高输入/输出性能的非水电解质电池。 其特征在于,将非水电解质和具有正极的一组发电元件,负极以及隔离所述正极和负极的隔膜密封在电池壳体内的非水电解质电池 因为负极含有如下式所定义的边缘/表面比(fe)为0.03-0.1的石墨。 fe =(2B / La + T / d002)/(2B / d100 + T / d002)。 在该等式中,B表示石墨的平均粒径,T表示晶粒厚度,La表示a轴微晶尺寸,d002表示(002)面之间的间隔,d100表示(100)面之间的间隔。
摘要:
An interface circuit, which uses electromagnetic induction to perform a signal transmission, comprises a transmission coil and a transmission circuit that provides a signal to the transmission coil, thereby causing the transmission coil to output a triangular or roughly triangular magnetic field signal.
摘要:
A server, which functions as an image data control device, stores image data based on input information into a hard disk of a storage unit, reads sequentially the image data stored in the hard disk sequentially, and detects the usage status of the hard disk in the course of reading the image data. Further, based on the detection result of the usage status of the hard disk, the server provides control for deleting from the hard disk at least a portion of the image data, which has already been read, among image data being read.
摘要:
A server, which functions as an image data control device, makes a judgment as to whether a job containing image data stored in a hard disk of the storage unit has received deletion designation for being designated to be deleted from the hard disk. Then, among the jobs judged to have received the deletion designation, the server provides control that prevents a referenced job containing image data that is referenced by a reproduced or combined job (referencing job) from being deleted from the hard disk.