| 摘要 |
PCT No. PCT/GB96/00278 Sec. 371 Date Aug. 4, 1997 Sec. 102(e) Date Aug. 4, 1997 PCT Filed Feb. 8, 1996 PCT Pub. No. WO96/24945 PCT Pub. Date Aug. 15, 1997A device suitable for switching large currents includes, within a gas filled envelope, an anode, electrodes and a thermionic cathode. Initially the device holds off a voltage until a triggering pulse is applied to an electrode. This cause an electron current to be established between the thermionic cathode and the anode. When the current reaches a sufficiently large value further conduction through the device occurs via current drawn from the surface of the electrode in a cold cathode mode, bypassing the cathode.
|
