Accession No

6073

Brief Description

Marconi-type N radio valve, by Ediswan, English, 1915 (c)

Origin

England; London

Maker

Ediswan

Class

electronics

Earliest Date

1915

Latest Date

1915

Inscription Date

Material

glass; metal (steel; platinum iridium; other metals); asbestos

Dimensions

height 184 mm; max width 52mm

Special Collection

Provenance

Donated on or before 22/05/2006.

Inscription

‘Marconis W.T: Co. Ltd. Pat. Appn. No. 28413-13 2V-PI[F] N8811’ [printed on bulb]
‘35V’ [paper label on bulb]

Description Notes

Marconi type N radio valve by Ediswan, c.1915

Glass bulb with thin end, Edison screw base, two contacts, paper label. Inside contains steel cylinder with metal mesh.

Complete

References

Events