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Title: Spark gap device for precise switching

Abstract

A spark gap device for precise switching of an energy storage capacitor into an exploding bridge wire load is disclosed. Niobium electrodes having a melting point of 2,415 degrees centigrade are spaced apart by an insulating cylinder to define a spark gap. The electrodes are supported by conductive end caps which, together with the insulating cylinder, form a hermetically sealed chamber filled with an inert, ionizable gas, such as pure xenon. A quantity of solid radioactive carbon-14 within the chamber adjacent the spark gap serves as a radiation stabilizer. The sides of the electrodes and the inner wall of the insulating cylinder are spaced apart a sufficient distance to prevent unwanted breakdown initiation. A conductive sleeve may envelop the outside of the insulating member from the midpoint of the spark gap to the cap adjacent the cathode. The outer metallic surfaces of the device may be coated with a hydrogen-impermeable coating to lengthen the shelf life and operating life of the device. The device breaks down at about 1,700 volts for input voltage rates up to 570 volts/millisecond and allows peak discharge currents of up to 3,000 amperes from a 0.3 microfarad energy storage capacitor for more than 1,000 operations.more » 3 figs.« less

Inventors:
Issue Date:
OSTI Identifier:
7250740
Patent Number(s):
4475055 A
Application Number:
PPN: US 6-343614
Assignee:
Dept. of Energy, Washington, DC (United States) SNL; EDB-94-123196
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Resource Relation:
Patent File Date: 28 Jan 1982
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; EXPLODING WIRES; POWER SUPPLIES; CAPACITIVE ENERGY STORAGE EQUIPMENT; SWITCHES; DETONATORS; ELECTRICAL EQUIPMENT; ELECTRONIC EQUIPMENT; EQUIPMENT; WIRES; 250400* - Energy Storage- Capacitor Banks; 450100 - Military Technology, Weaponry, & National Defense- Chemical Explosions & Explosives

Citation Formats

Boettcher, G.E. Spark gap device for precise switching. United States: N. p., 1984. Web.
Boettcher, G.E. Spark gap device for precise switching. United States.
Boettcher, G.E. Tue . "Spark gap device for precise switching". United States.
@article{osti_7250740,
title = {Spark gap device for precise switching},
author = {Boettcher, G.E.},
abstractNote = {A spark gap device for precise switching of an energy storage capacitor into an exploding bridge wire load is disclosed. Niobium electrodes having a melting point of 2,415 degrees centigrade are spaced apart by an insulating cylinder to define a spark gap. The electrodes are supported by conductive end caps which, together with the insulating cylinder, form a hermetically sealed chamber filled with an inert, ionizable gas, such as pure xenon. A quantity of solid radioactive carbon-14 within the chamber adjacent the spark gap serves as a radiation stabilizer. The sides of the electrodes and the inner wall of the insulating cylinder are spaced apart a sufficient distance to prevent unwanted breakdown initiation. A conductive sleeve may envelop the outside of the insulating member from the midpoint of the spark gap to the cap adjacent the cathode. The outer metallic surfaces of the device may be coated with a hydrogen-impermeable coating to lengthen the shelf life and operating life of the device. The device breaks down at about 1,700 volts for input voltage rates up to 570 volts/millisecond and allows peak discharge currents of up to 3,000 amperes from a 0.3 microfarad energy storage capacitor for more than 1,000 operations. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {10}
}