Glow discharge starter containing thorium for improving dark sta

Details Glow discharge starter containing thorium for improving dark sta Glow discharge starter containing thorium for improving dark sta

1985-11-20

1987-02-24

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fluorescent lamp-starting devices

337 22, H01H 6100

Patent

active

046460497

ABSTRACT:
A glow discharge starter having an hermetically sealed envelope containing an ionizable medium, a bimetallic electrode and a counter electrode located therewithin. A pair of lead-in conductors passes through one end of the envelope for electrically connecting the electrodes. A spot of dried paste is disposed on a surface within the envelope and comprises a mixture of thorium and a binder. The quantity of thorium is sufficient to reduce the dark effect of the glow discharge starter by improving the dark starting performance of the glow discharge starter.

REFERENCES:
patent: 2324907 (1943-07-01), Clack
patent: 2332809 (1943-10-01), Peters
patent: 2376669 (1945-05-01), Toro
patent: 2740861 (1956-04-01), Lake
patent: 2930872 (1960-03-01), Lake
patent: 2930873 (1960-03-01), Lake et al.

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