experimental Fleming valve

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Fleming valve with frame, ca 1906
Fleming valve, ca 1906
Fleming valve holder, ca 1906
Description (Brief):

Experimental Fleming valve in wooden mount. This valve was preserved as a "relic" by Fleming, who sent it to a magazine editor in 1926. A glass tube containing a filament and cylindrical electrode mounted in a wooden stand. Two binding posts are set on top, a third is on a side arm, and a spring maintains tension on the tube. The mount is an experimental piece that can be used to test different tubes of this design.

Date Made: ca 1905

Maker: Fleming, John Ambrose

Location: Currently not on view

Place Made: United Kingdom

See more items in: Work and Industry: Electricity

Exhibition:

Exhibition Location:

Data Source: National Museum of American History

Id Number: EM.318208Accession Number: 232756Catalog Number: 318208Accession Number: 232756

Object Name: vacuum tubediode

Measurements: overall: 4 3/4 in x 1 in; 12.065 cm x 2.54 cm

Metadata Usage: CC0

Guid: http://n2t.net/ark:/65665/ng49ca746ab-a90a-704b-e053-15f76fa0b4fa

Record Id: nmah_1288747

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