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本文叙述安装在同轴线中用于200兆赫的TR开关管的研制。设计了两种类型的TR开关管,每种都对所需要的多种矛盾的结构特性进行了折衷,并且是溅散问题的一个解决途径。在第一种设计中,通过扩展电极面积使溅散减至最小限度。并且,这种设计提供了简单而牢固的结构。但是,这种设计使击穿和恢复时间稍许增长了些。另一种设计,使用了一种低逸出功的浸渍钨电极,以便进一步减少溅散。这样就改进了工作性能,特别是电弧损耗和着火功率。但是,这种设计的结构较复杂,牢固性也较差。应用直流偏压降低了这两种结构的开关(特别是对于简单型式的)的恢复时间。本文叙述了简单的合格和不合格的测试。这种测试可在没有复杂的测试设备情况下应用。
This article describes the installation of a coaxial cable for the development of a 200 MHz TR switch. Two types of TR switches have been designed, each compromising the many conflicting structural characteristics required and a solution to the problem of splashing. In the first design, splashing is minimized by extending the electrode area. And, this design provides a simple and solid structure. However, this design slightly increased breakdown and recovery times. Another design uses a low work-function impregnated tungsten electrode to further reduce splashing. This improves the workability, especially the arc loss and ignition power. However, the structure of this design is more complex and less robust. The application of DC bias reduces the recovery time for both types of switches (especially for simple models). This article describes simple and unqualified tests. This test can be applied without complex test equipment.