High-power gas switch with hydride electrodes

Details High-power gas switch with hydride electrodes High-power gas switch with hydride electrodes

1991-11-06

1993-08-03

Scott, J. R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148R, 200266, 200267, 313633, H01H 102, H01H 3300, H01J 1702

Patent

active

052331431

ABSTRACT:
A high-power, high-repetition-rate spark gap switch having metal-hydride electrodes is provided The spark gap switch is configured with a trigger and two electrodes fabricated with metal hydrides. The hydride metals may be selected from a variety of alloys including iron, nickel, magnesium, and palladium based alloys. Use of these alloys for fabrication of the electrodes permits hydrogen to be absorbed into the electrode material at a density approximately that of liquid hydrogen. During operation of the switch, the increasing temperature causes hydrogen to be desorbed into cavity surrounding the switch. Whereas the increasing temperature lowers the breakdown voltage of the switch, the increasing pressure raises the breakdown voltage. The result is the switch operates at a constant breakdown voltage independent of temperature.

REFERENCES:
patent: 3093766 (1963-06-01), Cobine
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patent: 4912369 (1990-03-01), Moran et al.
Gas-Phase Pulsed Power Switches, Martin A. Gunderson IEEE Transactions on asma Science, vol. 19, No. 6, Dec. 1991, pp. 1123-1131.

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