- Item type
- Object
- Provenance
- Presented by the Marconi Corporation.
- Primary inscriptions
- "MARCONI OSRAM VALVE / Manufactured at / OSRAM LAMP WORKS / COVERED BY VARIOUS PATENTS / 19957 V.24" printed on exterior surface of bulb.
- Object type
- Radio valve
- Dimensions
- Diameter: 30mm Height: 75mm Weight: 0.05kg
- Inventory No
- 90635
- Accession Number
- 2004-9/317
Description
Marconi Radio Valve Type V24, in thin glass envelope with caps at either ends, with grid and anode connections as envelope side pips, and single strand tungsten filament running entire length with a spring for tensioning. Construction was co-axial with helical wire grid surrounding filament and fitting within cylindrical anode. In this valve, 'U' shaped glass support holds two stout wire rods that attach to anode and grid respectively; thus electrodes are only supported at one end. Previously catalogued with assorted other valves.
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