Method for forming tungsten electrode

Method for forming tungsten electrode

A one piece electrode is disclosed for use in miniature and subminiature lamps having a large diameter post section and a smaller diameter lead-in section. The lead-in section is formed by an electrochemical process from a wire that has an outer diameter equal to the desired post diameter. A smooth...

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Hauptverfasser: SIMS, JOHN W
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
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creator SIMS
JOHN W
description A one piece electrode is disclosed for use in miniature and subminiature lamps having a large diameter post section and a smaller diameter lead-in section. The lead-in section is formed by an electrochemical process from a wire that has an outer diameter equal to the desired post diameter. A smooth evenly tapered transition section between the post and lead-in sections is created during the etching process which permits heat to pass through the electrode at a controlled and predictable rate.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
title Method for forming tungsten electrode
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