| 摘要 |
<p>A vacuum discharge device comprising an insulating envelop (1) having metallic layers (7a, 7b) formed by a metallizing process respectively on the opposite ends thereof, electrodes (6a, 6b) disposed within the insulating envelop, and sealing members (8a, 8b) brazed respectively to the metallic layers. The insulating envelop is a hollow, cylindrical ceramic member having a substantially uniform wall thickness between each wavy inner ridges, or each crest of wavy ridges. The inner creeping length and outer creeping length ( l ) of the insulating envelop are greater than the distance (L) between the sealing members or between the metallic layers.</p> |
