High voltage switch tube
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United States of America Patent
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Aug 21, 1990
Issued Date -
N/A
app pub date -
Oct 25, 1988
filing date -
May 20, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A high voltage switch tube with a central cathode cylindrically symmetric to and surrounded by a tubular anode, with a grid interposed between the cathode and anode. A high negative voltage is applied to the cathode, but the flow of electrons to the anode is blocked by the grid which is held near cathode potential. After a space charge is created at the grid by electrons from the cathode, the grid is pulsed to ground potential, releasing electrons from the cathode to yield a very high current pulse. The cathode is preferably a graphite foam sleeve mounted on a support structure.
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