Discharge tube with activation layer

Details Discharge tube with activation layer Discharge tube with activation layer

1991-09-12

1993-08-10

Demeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313325, H01J 6135

Patent

active

052352471

ABSTRACT:
The discharge tube consists of an electrically insulating cylindrical body and a pair of electrodes disposed facing each other in the cylindrical body, and is sealed with an inert gas. An activation layer of a silicate compound of alkaline metal is formed over at least a part of the inner wall surface and the electrode surface, other than the discharge surface, that are exposed to the sealed gas. This activation layer helps keep the discharge inception voltage stable even when the discharge frequency changes greatly, which in turn extends the longevity of the discharge tube.

REFERENCES:
patent: 1968822 (1934-08-01), Gaides et al.
patent: 3431452 (1969-03-01), Hale et al.
patent: 4091436 (1978-05-01), Lange et al.
patent: 4104693 (1978-08-01), Toda et al.

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