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    • 2. 发明授权
    • Triggering method for a thyristor switch
    • 晶闸管开关触发方式
    • US4797587A
    • 1989-01-10
    • US31862
    • 1987-03-30
    • Christoph TschudiFritz Wittwer
    • Christoph TschudiFritz Wittwer
    • H02M1/08H02J3/18H02M1/088H02M1/092H03K17/725H03K17/72
    • H02M1/092H02J3/1864Y02E40/12
    • A triggering method for a thyristor switch which has at least two thyristors wired in series and a thyristor wired in antiparallel to each of these thyristors. The thyristor switch is triggered or cut off as a function of a specifiable on-off signal. At least a single triggering of a thyristor to be switched-on takes place at the earliest if a positive anode-cathode voltage is applied to it which exceeds a specifiable switch-on voltage limiting value. The method comprises generating a trigger standby signal if the on-off signal is in the switch-on condition and, with a specifiable minimum number of thyristors to be triggered wired in series, their anode-cathode voltage is greater than the specifiable switch-on voltage limiting value. At least a single triggering of each thyristor to be switched on takes place by means of a short-duration trigger pulse only during the duration of the trigger standby signal.
    • 一种晶闸管开关的触发方法,其具有串联的至少两个晶闸管和与这些晶闸管中的每一个反向并联的晶闸管。 晶闸管开关作为可指定开关信号的功能被触发或切断。 如果向其施加超过可指定的接通电压限制值的正极 - 阴极电压,则最早发生可接通的晶闸管的单次触发。 该方法包括:如果开 - 关信号处于接通状态,则产生触发待机信号,并且要指定的最小数量的晶闸管被串联触发,它们的阳极 - 阴极电压大于可指定开关 电压限制值。 只有在触发待机信号的持续时间期间,通过短时间触发脉冲才能进行每个晶闸管的接通的至少一次触发。
    • 4. 发明授权
    • Device for the generation of ozone and a process for its operation
    • 用于产生臭氧的装置及其运行过程
    • US4790980A
    • 1988-12-13
    • US873710
    • 1986-06-12
    • Peter ErniGerard Kirsch
    • Peter ErniGerard Kirsch
    • C01B13/11B01J19/08C01B13/10
    • C01B13/115Y10S315/05
    • A device and process for the generation of ozone using an ozone generator having two electrodes connected across the secondary winding of a high voltage transformer, the primary winding of which is connected to a converter which supplies thereto a square wave current of variable amplitude and variable frequency. A compensation coil is connected across either the primary winding or the secondary winding of the transformer. The ozone generator includes a solid dielectric and a gas path between its two electrodes. The inductance of the compensating choke and the operating frequency of the converter are selected such that the resonance frequency of the resonant circuit formed by the ozone generator and the compensation choke lies below the operating frequency of the converter current supply in any operating condition. In this way the degree of utilization of medium voltage converters of converter-fed ozone generators is significantly increased by connecting a compensation choke (6) in parallel to the ozone generator (5) and by dimensioning it suitably.
    • 一种使用臭氧发生器产生臭氧的装置和方法,所述臭氧发生器具有连接在高压变压器的次级绕组两端的两个电极,所述高压变压器的初级绕组连接到转换器,转换器向其提供可变幅度和可变频率的方波电流 。 补偿线圈连接在变压器的初级绕组或次级绕组上。 臭氧发生器包括固体电介质和其两个电极之间的气体路径。 选择补偿扼流圈的电感和转换器的工作频率,使得由臭氧发生器和补偿扼流圈形成的谐振电路的谐振频率低于任何工作条件下的变流器电流供给的工作频率。 以这种方式,通过将补偿扼流圈(6)并联到臭氧发生器(5)并通过适当地尺寸来显着地增加转换器供给的臭氧发生器的中压变换器的利用程度。
    • 5. 发明授权
    • Aluminum alloy for the preparation of powders having increased
high-temperature strength
    • 用于制备具有提高的高温强度的粉末的铝合金
    • US4765851A
    • 1988-08-23
    • US875733
    • 1986-06-18
    • Malcolm J. Couper
    • Malcolm J. Couper
    • C22C21/00C22C1/04
    • C22C1/0416
    • An aluminum alloy for the production of powders having increased high-temperature strength by rapid quenching, the said alloy containing 1.5 to 5% by weight of Li, 4 to 11% by weight of Fe and 1 to 6% by weight of at least one of the elements Mo, V or Zr, the remainder being Al, or 1.5 to 5% by weight of Li, 4 to 7% by weight of Cr and 1 to 4% by weight of at least one of the elements V or Mn, the remainder being Al. A low density and good high-temperature strength as well as good thermal stability up to 400.degree. C. coupled with Vickers hardnesses of up to 180 (HV) are achieved. Hardness-imparting dispersoids in the form of the phases Al.sub.3 Li and Al.sub.3 Zr, as well as other intermetallic compounds of Al with Mo, V or Mn, having a particle diameter of no more than 0.1 .mu.m, constitute a large volume fraction.
    • 一种用于生产通过快速淬火提高高温强度的粉末的铝合金,所述合金含有1.5至5重量%的Li,4至11重量%的Fe和1至6重量%的至少一种 的元素Mo,V或Zr,余量为Al,或1.5至5重量%的Li,4至7重量%的Cr和1至4重量%的元素V或Mn中的至少一种元素, 剩下的是Al。 实现低密度和良好的高温强度以及高达400℃的良好的热稳定性,加上高达180(HV)的维氏硬度。 Al3Li和Al3Zr相的形式的赋予硬度的分散体以及具有不超过0.1μm的粒径的具有Mo,V或Mn的Al的其它金属间化合物构成大的体积分数。
    • 6. 发明授权
    • Thermionic cathode of high emissive power for an electric tube, and
process for its manufacture
    • 用于电管的高发射功率的热阴极及其制造方法
    • US4752713A
    • 1988-06-21
    • US23917
    • 1987-03-05
    • Charley Buxbaum
    • Charley Buxbaum
    • H01J1/14H01J9/04
    • H01J9/042H01J1/14
    • A reactionless thermionic cathode for electronic tubes consists of a metallic or ceramic support and an alloy, preferably an intermetallic compound, containing the actual emission-promoting element, with a metal from the group comprising those of the VIIIth vertical row of the periodic table and rhenium. The preferred activation substances are platinides of the elements having a low electron work function, predominantly Ba and La. The cathode is manufactured by wet-mechanical, cataphoretic or electroplating application of the activation substance to the support or by infiltration of the porous support having a pore volume of at least 10%. High emission current densities are obtained at relatively low operating temperatures.
    • 用于电子管的无反应的热离子阴极由金属或陶瓷载体和包含实际的发射促进元素的合金,优选金属间化合物组成,其中包括来自周期表的第八垂直行的金属和铼 。 优选的活化物质是具有低电子功能功能的元素的铂,主要是Ba和La。阴极通过湿机械,阴影电泳或电镀将活化物质施用于载体或通过渗透具有 孔体积至少为10%。 在较低的工作温度下获得高发射电流密度。
    • 9. 发明授权
    • Method for processing analog output signals from current and voltage
transducers and facility for carrying out the method
    • 用于处理来自电流和电压传感器的模拟输出信号的方法以及用于执行该方法的设备
    • US4725838A
    • 1988-02-16
    • US715467
    • 1985-03-25
    • Martin MaschekGeorg Mastner
    • Martin MaschekGeorg Mastner
    • G01R21/00G01R21/133G08C19/16
    • G01R21/00G01R21/133
    • Analog output signals from decentralized transducers for current and voltage are sampled with timing patterns generated at a decentralized location and are transmitted to a central evaluating facility in the form of digitally encoded data streams (D.sub.UR, . . . ).For the purpose of generating data sets which are each based on one sampling of each analog output signal, such that the relative time displacement of the samplings should not exceed a predetermined value which corresponds to the maximum (.DELTA.) of the data-refresh intervals, latch commands (L) are generated at greater intervals in the central evaluating facility, following which in each case the digitized sampled value arriving next of each data stream (D.sub.UR, . . . ) is temporarily stored. After the temporary storage has taken place, in each case a "Ready" signal (B.sub.UR, . . . ) is set. The "Ready" signals (B.sub.UR, . . . ) are combined in a logical AND operation to form a "Data set ready" signal (DB) which is transferred to a computer which interrogates the temporarily stored data (Z.sub.UR, . . . ) via a databus.
    • 来自用于电流和电压的分散式换能器的模拟输出信号由在分散位置处产生的定时模式进行采样,并以数字编码数据流(DUR,...)的形式传输到中央评估设备。 为了产生每个基于每个模拟输出信号的一个采样的数据集,使得采样的相对时间位移不应超过对应于数据刷新间隔的最大值(DELTA)的预定值, 在中央评估设备中以更大的间隔产生锁存命令(L),随后在每个情况下临时存储到每个数据流(DUR,...)下一个到达的数字化采样值。 在临时存储发生后,在每种情况下都会设置“就绪”信号(BUR,...)。 “就绪”信号(BUR,...)以逻辑与运算组合以形成“数据设置就绪”信号(DB),该信号被传送到询问暂时存储的数据(ZUR,...)的计算机, 通过数据总线