Device for detecting failure of field effect transistor
    62.
    发明授权
    Device for detecting failure of field effect transistor 失效
    用于检测场效应晶体管故障的装置

    公开(公告)号:US06876531B2

    公开(公告)日:2005-04-05

    申请号:US10309106

    申请日:2002-12-04

    CPC分类号: H02H7/0844

    摘要: A device for detecting failure of a field effect transistor (FET) includes a first FET1 connected in series with a motor M between a power source terminal and ground, a motor control unit 11 for on/off controlling a voltage to be applied to said motor to set normal/reverse operation and stopping of said motor, a gate control unit for on/off controlling a gate voltage to be applied to said FET to control driving of said motor, a voltage applying means VB, R1 for applying a positive voltage at a prescribed voltage level to the current input terminal of the FET; a voltage detecting unit CMP1 for detecting the voltage level of the positive voltage thus applied when said gate voltage is off; and a failure detecting unit 14 for detecting short-circuiting failure of the FET on the basis of a change in the voltage level detected by said voltage detecting unit when said gate voltage is off while said motor stops. In this configuration, failure of the FET for controlling driving of the motor can be detected both when the motor stops and operates.

    摘要翻译: 用于检测场效应晶体管(FET)的故障的装置包括与电源端与地之间的电动机M串联连接的第一FET1,用于开/关控制施加到所述电动机的电压的电动机控制单元11 设定正常/反向操作和停止所述电动机;门控制单元,用于开/关控制施加到所述FET的栅极电压以控制所述电动机的驱动;电压施加装置VB,R1,用于施加正电压 对FET的电流输入端施加规定的电压电平; 电压检测单元CMP1,用于检测当所述栅极电压关闭时施加的正电压的电压电平; 以及故障检测单元14,用于当所述电机停止时,基于所述电压检测单元检测到的电压电平的变化来检测FET的短路故障。 在这种结构中,当马达停止并运行时,可以检测用于控制马达驱动的FET的故障。

    Process for manufacturing a superconducting wire of compound oxide-type
ceramics
    65.
    发明授权
    Process for manufacturing a superconducting wire of compound oxide-type ceramics 失效
    复合氧化物型陶瓷超导线的制造工艺

    公开(公告)号:US5981444A

    公开(公告)日:1999-11-09

    申请号:US851312

    申请日:1997-05-05

    摘要: A process for manufacturing a superconducting elongated article such as a superconducting wire which is applicable for manufacturing a superconducting coil or the like. The process includes steps comprising filling a metal pipe with material powder of ceramic consisting of compound oxide having superconductivity, performing plastic deformation of the metal pipe filled with the ceramic metal powder to reduce the cross section of the metal pipe, and then subjecting the deformed metal pipe to heat-treatment to sinter the ceramic material powder filled in the metal pipe. The ceramic material powder may contain compound oxide having Perovskite-type crystal structure exhibiting superconductivity.The metal pipe may selected from a group comprising metals of Ag, Au, Pt, Pd, Rh, Ir, Ru, Os, Cu, Al, Fe, Ni, Cr, Ti, Mo, W and Ta and alloys including these metals as the base. The heat-treatment may be carried out at a temperature ranging from 700 to 1,000.degree. C., The plastic deformation of the metal pipe filled with the ceramic metal powder may be performed in such manner that the cross section of the metal pipe is reduced at a dimensional reduction ratio ranging from 16% to 92% by wire-drawing or forging by means of dies, roller dies, or extruder.

    摘要翻译: 一种用于制造可应用于制造超导线圈等的超导细长物品例如超导线材的方法。 该方法包括以下步骤:用金属管填充由具有超导性的复合氧化物组成的陶瓷材料粉末,对填充有陶瓷金属粉末的金属管进行塑性变形,以减小金属管的横截面,然后对变形的金属 管道进行热处理以烧结填充在金属管中的陶瓷材料粉末。 陶瓷材料粉末可以含有具有超导性的钙钛矿型晶体结构的复合氧化物。 金属管可以选自Ag,Au,Pt,Pd,Rh,Ir,Ru,Os,Cu,Al,Fe,Ni,Cr,Ti,Mo,W和Ta的金属和包括这些金属的合金 的基地。 热处理可以在700〜1000℃的温度下进行。填充有陶瓷金属粉末的金属管的塑性变形可以以使金属管的截面减小的方式进行 通过模具,辊模或挤出机进行拉丝或锻造,尺寸减小率为16%至92%。

    Image output device and facsimile management report output method
    69.
    发明授权
    Image output device and facsimile management report output method 失效
    图像输出装置和传真机管理报告输出方式

    公开(公告)号:US5337156A

    公开(公告)日:1994-08-09

    申请号:US901178

    申请日:1992-06-19

    IPC分类号: H04N1/00 H04N1/32 H04N1/21

    摘要: A facsimile in which various kinds of management reports on its operation conditions are output. In the facsimile, when outputting a management report about the facsimile itself, the contents of the management report are once converted into code data and the code data are then stored in a code storage unit. After that, the stored code data are output from an image recording unit in the same manner as the code data of an image received from outside in the code storage unit is output.

    摘要翻译: 输出各种管理报告的传真。 在传真中,当输出关于传真本身的管理报告时,管理报告的内容被一次转换为代码数据,然后将代码数据存储在代码存储单元中。 之后,以与从代码存储单元中从外部接收的图像的代码数据输出相同的方式,从图像记录单元输出存储的代码数据。

    Method for producing an elongated sintered article
    70.
    发明授权
    Method for producing an elongated sintered article 失效
    生产细长烧结制品的方法

    公开(公告)号:US5252288A

    公开(公告)日:1993-10-12

    申请号:US883368

    申请日:1992-05-15

    摘要: Method for producing an elongated sintered article, characterized by the steps including filling powder material in a pipe, carrying out plastic deformation of the pipe filled with the powder material, and heating the pipe filled with the powder material to burn and/or sinter the powder material.The method of the present invention is advantageously applicable to production of wire or rod of ceramics, particularly so called new ceramics or fine ceramics, sintered alloys or their combination, which are difficult to shape or mold by conventional process such as wire-drawing, rolling or extrusion of powder material which is difficult to mold and machine after the powder material is sintered.

    摘要翻译: 一种细长烧结制品的制造方法,其特征在于包括将粉末材料填充到管中,对填充有粉末材料的管进行塑性变形,以及加热填充有粉末材料的管以烧结和/或烧结粉末 材料。 本发明的方法有利地适用于陶瓷线或棒的生产,特别是所谓的新陶瓷或微细陶瓷,烧结合金或它们的组合,其难以通过常规方法如拉丝,轧制形成或模制 或挤出粉末材料,在粉末材料烧结后难以模塑和机械加工。