Patent · US Expired

Low pressure gas discharge switch with particular electrode structure

US6307308A · kind A · utility

2Cited by

2References

16Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Jörg Teichmann · Bad Staffelstein, DE
Michael Römheld · Uttenreuth, DE

Key dates

Filing date	Aug 13, 1999
Grant date	Oct 23, 2001
Priority date	—
Expiry date	Aug 13, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH01J17/40
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

At least main electrodes for a low pressure gas discharge arranged at a distance from each other are present in such switches, the main electrodes forming a cathode and an anode of a discharge path in an interrupter chamber for the gas discharge which is fired by increasing electron density in a cathode cavity. For this purpose, at least the cathodes have at least one opening, preferably the cathode and anode, having opposite aligned openings for triggering the discharge. In such an arrangement, an arrangement for the generation of a magnetic field superimposed on the discharge may be present. At least one slot is present in at least one of the main planar electrodes for generating a radial magnetic field. A single slot maybe provided which runs in the form of a spiral from the area of the electrode center to the area of the electrode edge.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.