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Semiconductor power devices with fast turn-on characteristics are appearing in the market. The issues in developing the devices for pulsed power applications such as gate driving technique and characterization of the devices, are summarized. SI-thyristors were characterized as a fast high current switching device. A stacked SI-thyristor switching unit was designed and tested that was operated with...
Pulsed surface discharge on the surface of ceramics was investigated experimentally. Photon counting method was applied to clarify preceding phase of the discharges. The results indicated the effect of charge injection from electrodes. Pulsed surface discharge reactor for decomposition of nitrogen oxides utilizing honeycomb ceramics was proposed. Framing and streak observation was carried out with...
A plasma created from copper powder was successfully obtained in pulsed high current discharges. Powder flow was injected transiently between the electrodes in vacuum. The powder particles are spherically shaped and are accelerated by pulsed electrostatic field. Diverging powder flow was controlled to form a directed flow with a constant diameter by applying an extra focusing electrode. The powder...
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