H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/179
H01J 61/06 (2006.01)
Patent
CA 1150762
LD 7569 ELECTRODE WITH OVERWIND FOR MINIATURE METAL VAPOR LAMP ABSTRACT OF THE DISCLOSURE An electrode for a miniature high pressure metal vapor lamp comprises a slender tungsten shank joined to a molybdenum inlead by a weld knot. The shank diameter is chosen above the size where melt-back starts at the intended lamp current and is provided with a fine wire overwind fitting loosely thereon and retained in place by frictional engagement with the weld knot. The overwind reduces breakdown voltage and assures rapid glow-to-arc transition.
352171
Davenport John M.
Fridrich Elmer G.
Company General Electric
Eckersley Raymond A.
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