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本文研究了用半导体层涂复五种不同介质材料(亦称衬底),使其表面产生低电阻的直空触发管的一些电气性能。所使用的介质材料有高铝瓷、滑石瓷、钛酰钡、碳化硅和氮化硼五种。已经发现,这样的真空触发管的着火几率和着火时间延迟,实际上不依赖于衬底的材料。着火时间延迟通常随着触发能量或触发电压的升高而降低,直到达到饱和为止。有效着火的最低触发电压,除钛酸钡高于700伏以外,其余的衬底材料约为300伏。就钛酸钡而言,触发电压较高是由于这种材料很难把称之为胶状的石墨乳剂半导体材料均匀地涂复在其表面上。本文还叙述了在触发脉冲电压上叠加一个维弧直流来使已经停止工作的真空触发管恢复触发,并讨论了这种现象的可靠机理。
In this paper, we study the electrical properties of a semiconductor laser to coat five different dielectric materials (also referred to as substrates) to create a low-resistance, straight-electrode trigger tube on the surface. Dielectric materials used are high aluminum porcelain, talc porcelain, barium titanate, silicon carbide and boron nitride five. It has been found that the firing rate and firing time delay of such a vacuum trigger tube is practically independent of the material of the substrate. The fire time delay usually decreases as the trigger energy or trigger voltage increases until it reaches saturation. The lowest trigger voltage for effective ignition, except barium titanate above 700 volts, the rest of the substrate material is about 300 volts. In the case of barium titanate, the higher triggering voltage is due to the fact that it is difficult for this material to uniformly coat the so-called colloidal graphite emulsion semiconductor material on its surface. This article also describes the trigger pulse voltage superimposed on a dimensional arc DC to stop working has been triggered to trigger the vacuum trigger tube, and discuss the reliable mechanism of this phenomenon.