Power resistor, method of manufacturing the same, and power circuit
breaker
    12.
    发明授权
    Power resistor, method of manufacturing the same, and power circuit breaker 失效
    功率电阻,制造方法及电源断路器

    公开(公告)号:US5629666A

    公开(公告)日:1997-05-13

    申请号:US445725

    申请日:1995-05-22

    IPC分类号: H01C7/108 H01C7/10

    CPC分类号: H01C7/108

    摘要: Disclosed is a power resistor which has a large heat capacity per unit volume and an appropriate and stable electrical resistance, and in which the resistance changes little with time due to surge absorption. This power resistor includes a sintered body containing aluminum oxide and carbon, and a pair of electrodes formed on the two opposing surfaces of the sintered body. This sintered body consists of first regions containing a small amount of carbon or not containing carbon and second regions containing a larger amount of carbon than in the first regions and so arranged as to be connected to the electrodes.

    摘要翻译: 公开了一种功率电阻器,其具有每单位体积的大的热容量和适当且稳定的电阻,并且由于浪涌吸收,电阻随时间变化很小。 该功率电阻器包括含有氧化铝和碳的烧结体以及形成在烧结体的两个相对表面上的一对电极。 该烧结体由含有少量碳或不含碳的第一区域和包含比第一区域中的碳含量更大的第二区域组成,并且被布置为连接到电极。

    Information search device
    16.
    发明授权
    Information search device 失效
    信息搜索装置

    公开(公告)号:US3999846A

    公开(公告)日:1976-12-28

    申请号:US597908

    申请日:1975-07-21

    IPC分类号: G06K17/00 G03B23/12

    CPC分类号: G06K17/0019

    摘要: In an information search device for searching for any desired information in a film provided with a series of information frames, frame index marks and document index marks formed along the information frames on the opposite sides thereof, there is provided a drive motor for transporting the film, a light source system for irradiating the film, a photoelectric converter element for detecting the frame index marks, a second photoelectric converter element for detecting the document index marks, a gate circuit for receiving the detection signals from the converter elements to selectively pass one of those detection signals, a counter for counting the detection signals passed through the gate circuit, and a brake mechanism for stopping the transport of the film when the counter has counted up a number of detection signals corresponding to the search number of the desired information.

    摘要翻译: 在用于搜索具有一系列信息帧,帧索引标记和在其相对侧的信息帧上形成的文档索引标记的胶片中的任何所需信息的信息搜索装置中,提供了一种用于传送胶片的驱动电机 ,用于照射胶片的光源系统,用于检测帧索引标记的光电转换元件,用于检测文档索引标记的第二光电转换元件,用于接收来自转换器元件的检测信号的门电路,以选择性地通过 这些检测信号,用于对通过门电路的检测信号进行计数的计数器,以及当计数器对与所需信息的搜索号相对应的检测信号计数时停止胶片传送的制动机构。

    Method of manufacturing circuit board
    19.
    发明授权
    Method of manufacturing circuit board 失效
    电路板制造方法

    公开(公告)号:US5280850A

    公开(公告)日:1994-01-25

    申请号:US961845

    申请日:1992-10-16

    摘要: According to this invention, there is provided a method of manufacturing a highly reliable circuit board in which a copper member is strongly, directly bonded to a substrate made of an aluminum nitride sintered body, thereby obtaining high peel strength. The method of manufacturing the circuit board includes the steps of bringing a copper member containing 100 to 1,000 ppm of oxygen into contact with an oxide layer having a thickness of 0.1 to 5 .mu.m formed on a surface of a substrate made of an aluminum nitride sintered body, and heating the substrate in an inert gas atmosphere containing 1 to 100 ppm of oxygen at a temperature not more than a temperature corresponding to a liquidus including a pure copper melting point of a hypoeutectic region of a two-component phase diagram of Cu-Cu.sub.2 O and not less than a temperature corresponding to a eutectic line obtained by connecting a line corresponding to copper and a line corresponding to a cuporus oxide composition, and directly bonding the copper member to the substrate.

    摘要翻译: 根据本发明,提供了一种制造高可靠性电路板的方法,其中铜构件牢固地直接接合到由氮化铝烧结体制成的衬底上,从而获得高剥离强度。 制造电路板的方法包括以下步骤:将含有100-1000ppm氧的铜构件与由铝制成的基板的表面形成的厚度为0.1〜5(my)m的氧化物层接触 氮化物烧结体,在含有1〜100ppm的氧的惰性气体气氛中,在不高于对应于液相线的温度的温度下加热所述基板,所述液相线包括双组分相图的亚共晶区域的纯铜熔点 Cu-Cu 2 O,并且不低于对应于通过连接对应于铜的线和对应于氧化铜组合物的线而获得的共晶线的温度,并且将铜构件直接接合到衬底。

    Method of manufacturing an aluminum nitride structure
    20.
    发明授权
    Method of manufacturing an aluminum nitride structure 失效
    制造氮化铝结构的方法

    公开(公告)号:US5204080A

    公开(公告)日:1993-04-20

    申请号:US545691

    申请日:1990-06-29

    IPC分类号: C04B35/581 C04B37/00

    CPC分类号: C04B35/581

    摘要: An aluminum nitride structure is prepared by placing an oxygen-trapping substance at at least one position on an aluminum nitride substrate having a first concentration of solution oxygen, and heating the resultant structure in a non-oxidizing atmosphere to locally reduce the first concentration of solution oxygen in said aluminum nitride substrate under said oxygen-trapping substance to a second concentration of solution oxygen by trapping the solution oxygen in the oxygen-trapping substance, thereby forming an aluminum nitride structure in which at least one region of the aluminum nitride structure corresponding to the position of said oxygen-trapping substance, which position has said second oxygen concentration, is integrally formed with aluminum nitride regions having said first concentration of solution oxygen. The aluminum nitride structure of the present invention exhibits anisotropic physical properties.

    摘要翻译: 通过在具有第一浓度溶液氧的氮化铝衬底上的至少一个位置放置氧捕获物质并在非氧化性气氛中加热所得结构以局部地降低溶液的第一浓度来制备氮化铝结构 在所述氧捕获物质下的所述氮化铝衬底中的氧气通过捕集氧吸收物质中的氧气而捕获到第二浓度的溶液氧,由此形成氮化铝结构,其中至少一个氮化铝结构区域对应于 所述氧捕获物质的位置具有所述第二氧浓度,与具有所述第一浓度溶液氧的氮化铝区域一体形成。 本发明的氮化铝结构显示出各向异性的物理性质。