Ignitron with arc-centering magnetic field

Details Ignitron with arc-centering magnetic field Ignitron with arc-centering magnetic field

1986-05-16

1989-05-23

DeMeo, Palmer C.

Electric lamp and discharge devices

Liquid electrode discharge devices

Cathode spot anchoring

313171, 313157, 313160, 313162, 313232, H01J 150

Patent

active

048333638

ABSTRACT:
An ignitron device is provided in which a permanent annular magnet at least partly surrounds the region between the ignitron anode and the surface of a mercury pool connected to the cathode terminal, the magnet being effective to create an axial magnetic field in the aforementioned region which tends to constrain the discharge arc of the device towards the center of the pool and away from the envelope walls of the device.

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Gilmour Jr. and Lockwood, "The Interruption of Vacuum Arcs at High DC Voltages", Apr. 1975, IEEE Trans. on Electron Devices, vol. 22, No. 4, pp. 173-180.

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