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Mullard Wecovalve Radio Valve Peanut Type With Carton, by Mullard, English, c. 1920

Inventory Number 27364

Acknowledgement: © History of Science Museum, University of Oxford, inv.27364

Item type
Object
Makers
Mullard
Provenance
Presented by the Marconi Corporation.
Primary inscriptions
"MULLARD / WECOVALVE" and "PROTECTED BY PATENT" printed on exterior surface of bulb.
Other inscriptions
"Mullard / Wecovalve / PEANUT TYPE / FULLY LICENSED FOR / MANUFACTURE AND SALE / UNDER BRITISH PATENTS: / Nos 17,580 - 123,126 - 180,090. / Mullard / Wecovalve / PEANUT TYPE / Important / Filament Current 0.25amps. / Filament Voltage 0.8 to 1.1 volts. / Detector Anode Voltage 17 to 22 vols. / Amplifier Anode Voltage 22 to 45 volts. / THE MULLARD RADIO VALVE CO., LTD.," printed on exterior surface of carton. "Trade Mark. / MULLARD RADIO VALVE CO. [LOGO]" printed on exterior surfaces of carton lids.
Object type
Radio valve
Dimensions
Diameter: 15mm Height: 65mm Weight: 0.05kg
Inventory No
27364
Accession Number
2004-9/352

Description

Mullard Wecovalve Radio Valve Peanut Type, with matching blue, white and black printed carton. With vertical glass envelope and polished black plastic? base. Base has four soldered steel mini-terminals and a steel side pin. Valve has removable cardboard protective sheath. Previously catalogued with assorted other valves.

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