X-ray generator with current measuring device
    1.
    发明授权
    X-ray generator with current measuring device 失效
    具有电流测量装置的X射线发生器

    公开(公告)号:US4768215A

    公开(公告)日:1988-08-30

    申请号:US863501

    申请日:1986-05-15

    CPC分类号: H01J35/165 H05G1/265

    摘要: An X-ray generator with current measuring device has an X-ray tube, a power supply unit for feeding high voltage to the X-ray tube, a high voltage cable for connecting the X-ray tube and power supply unit. The high voltage cable is comprised of a core conductor, an insulating layer surrounding the core conductor and a covered shield surrounding the insulating layer and the covered shield is disconnected near one end of the cable connected to the X-ray tube so as to be divided into a major shield portion adjacent to the power supply unit and a minor shield portion adjacent to the X-ray tube. An insulating member is provided for electrically insulating the major and minor shield portions, and a magnetic sensor sensitive to a magnetic field generated by a current flowing through the high voltage cable is positioned around the minor shield portion. The X-ray generator can measure the X-ray tube current accurately and readily under electrical insulation.

    摘要翻译: 具有电流测量装置的X射线发生器具有X射线管,用于向X射线管提供高电压的电源单元,用于连接X射线管和电源单元的高压电缆。 高压电缆包括芯导体,围绕芯导体的绝缘层和围绕绝缘层的覆盖屏蔽层,并且覆盖的屏蔽件在连接到X射线管的电缆的一端附近断开,以便被分割 与电源单元相邻的主屏蔽部分和与X射线管相邻的次屏蔽部分。 提供绝缘构件用于电绝缘主要和次要屏蔽部分,并且对流过高压电缆的电流产生的磁场敏感的磁传感器定位在次屏蔽部分周围。 X射线发生器可以在电绝缘下准确,容易地测量X射线管电流。

    Car signaling system
    2.
    发明授权
    Car signaling system 失效
    汽车信号系统

    公开(公告)号:US4012019A

    公开(公告)日:1977-03-15

    申请号:US605832

    申请日:1975-08-19

    CPC分类号: B61L3/185

    摘要: A signaling system for cars having wheels adapted for running along a track, in which a signal wire is disposed to extend along the track, a pantograph is provided on each car to make sliding engagement with the signal wire, and a detector apparatus responsive to the sliding movement of the pantograph along the signal wire is provided to detect the relative interval between the cars.

    摘要翻译: 一种用于汽车的信号系统,其具有适于沿着轨道行进的车轮,其中信号线沿着轨道延伸设置在每个轿厢上,以便与信号线滑动接合;以及检测器装置, 提供集电弓沿着信号线的滑动运动以检测轿厢之间的相对间隔。

    Magnetic amplifying apparatus
    8.
    发明授权
    Magnetic amplifying apparatus 失效
    磁放大装置

    公开(公告)号:US4377758A

    公开(公告)日:1983-03-22

    申请号:US160202

    申请日:1980-06-17

    申请人: Hisakatsu Kiwaki

    发明人: Hisakatsu Kiwaki

    IPC分类号: H02M1/08 H03F9/00 H03F9/04

    CPC分类号: H03F9/04 H03F9/00

    摘要: In an apparatus having a saturable magnetic core, a control winding wound on the magnetic core and supplied with a D.C. voltage in accordance with a desired phase angle, and an output winding wound on the magnetic core and supplied with an A.C. voltage through a load resistor, whereby the firing phase of a thyristor is controlled by a voltage across the load resistor, an additional winding is wound on the saturable magnetic core to detect the saturation of the saturable magnetic core by a rapid drop of a voltage across the additional winding. When the saturation is detected, the magnitude of the A.C. voltage applied to the output winding is increased. The phase angle characteristic of the magnetic phase shifter is determined under a low voltage condition prior to the saturation of the magnetic core, and after the saturation a high voltage is applied to the load resistor.

    摘要翻译: 在具有可饱和磁芯的装置中,控制绕组缠绕在磁芯上并根据期望的相位角提供直流电压,以及缠绕在磁芯上的输出绕组,并通过负载电阻器提供交流电压 ,由此晶闸管的触发相位由负载电阻器两端的电压控制,另外的绕组缠绕在可饱和磁芯上,以通过附加绕组上的电压的快速下降来检测可饱和磁芯的饱和度。 当检测到饱和时,施加到输出绕组的交流电压的幅度增加。 在磁芯饱和之前,在低电压条件下确定磁性移相器的相位角特性,在饱和之后,向负载电阻施加高电压。

    Braking control apparatus for an electric motor operated vehicle
    9.
    发明授权
    Braking control apparatus for an electric motor operated vehicle 失效
    电动车辆制动控制装置

    公开(公告)号:US4124812A

    公开(公告)日:1978-11-07

    申请号:US742263

    申请日:1976-11-16

    摘要: In cases of subjecting an electric motor operated vehicle to electric braking, regenerative braking is performed during the first stage of the braking operation thereby supplying the armature current to the battery as a load, and a plugging operation is performed during the last stage thereof to complete the braking operation, whereby the efficiency of operation is enhanced by conserving the armature current to extend the traveling distance of the vehicle per charge of the vehicle battery, and the generation of excessive heat in the motor is suppressed.

    摘要翻译: 在使电动车辆进行电动制动的情况下,在制动动作的第一阶段进行再生制动,从而将电枢电流作为负载提供给电池,并且在最后阶段执行封闭动作以完成 制动操作,从而通过节省电枢电流来增加车辆每辆车辆电池的行驶距离,从而提高了操作效率,并且抑制了电动机中过多的热量的产生。