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公开(公告)号：US4577114A
公开(公告)日：1986-03-18
申请号：US611292
申请日：1984-05-17
CPC分类号： H03K17/78
摘要： High power optically activated switches of the semiconductor type utilizing broadbanded flashlamp as the source of light for rendering the semiconductor conductive and thus close the switch. In order that the conductivity of the semiconductor when in the "on" state be uniform over the load current carrying cross-section thereof, the semiconductor is treated to produce a tapered density of trapping or re-combination centers therein, with the density being a maximum at the semiconductor surface which faces the flashlamp. Several novel configurations of these switches are shown, including reflectors for concentrating the flashlamp output on the semiconductor, and a plurality of semiconductor switches all activated by a single light source, as well as liquid cooled semiconductors.
摘要翻译： 利用宽带闪光灯作为光源的半导体类型的大功率光学激活开关，用于使半导体导通并因此闭合开关。 为了使半导体在“接通”状态下的导电性在其承载横截面的负载电流上是均匀的，则半导体被处理以产生其中的陷阱或再组合中心的锥形密度，其密度为 在面向闪光灯的半导体表面处的最大值。 示出了这些开关的几种新颖结构，包括用于将闪光灯输出集中在半导体上的反射器，以及全部由单个光源激活的多个半导体开关以及液体冷却的半导体。
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公开(公告)号：USH123H
公开(公告)日：1986-09-02
申请号：US841082
申请日：1986-02-24
IPC分类号： F41B6/00
CPC分类号： F41B6/006
摘要： The invention concerns an EM Launcher wherein each projectile has an insuor which, when subjected to a breakdown voltage, allows current conduction through the EM rails and the projectile for acceleration thereof. The insulator thus provides a disposable switch for a rapid fire EM launcher, negating the necessity of electrical (inductor circuit) charging or mechanical (breech) recycling.A key element in the invention is the replacing of a repetitively operated external switch with a plurality of single-shot, disposable switches. Better performance can be obtained from a single-shot switch (i.e., lower inductance, lower on-state voltage drop) because the compromises required of a repetitive switch to enable it to recover its voltage holdoff are not necessary.
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公开(公告)号：US5153460A
公开(公告)日：1992-10-06
申请号：US673916
申请日：1991-03-25
CPC分类号： H01T2/00 , H01J17/46 , Y10S174/17 , Y10S174/23 , Y10T307/773
摘要： A spark gap switch having a mid-plane or triggering electrode is brought o a conductive state using a photoconductive switch or other suitable switch, closed by a laser pulse on other pulsed light source. The photoconductive switch is connected between one of the primary electrodes and the mid-plane electrode and brings the potential of the mid-plane electrode to the same potential as the primary electrode when the photoconductive switch is closed. The use of the photoconductive switch permits shorter closing times and eliminates the need for high voltage auxiliary triggering circuits. Plural photoconductive switches, which are triggered in a precise predetermined sequence, improve the operation of Marx generators and other multi-spark gap switch applications.
摘要翻译： 具有中间平面或触发电极的火花隙开关通过使用其它脉冲光源上的激光脉冲封闭的光电导开关或其它合适的开关变成导通状态。 光电导开关连接在主电极和中间平面电极中的一个之间，并且当光导开关闭合时，使中平面电极的电位与主电极的电位相同。 使用光电导开关允许更短的关闭时间，并且不需要高电压辅助触发电路。 以精确的预定顺序触发的多个光电导开关改善了马克思发生器和其他多火花间隙开关应用的操作。
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公开(公告)号：US1153989A
公开(公告)日：1915-09-21
申请号：US1413815
申请日：1915-03-13
发明人： WOODS JAMES C
CPC分类号： E01B5/08
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