McVitie Weston valve collection, Hivac midget valve type XD

Made:
1935
maker:
Hivac Limited
Hivac valve, type X.D., sheet anode embossed H, (RMW/D83A - McVitie Weston number), by Hivac Ltd., 1935.

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Hivac valve, type X.D., sheet anode embossed H, (RMW/D83A - McVitie Weston number), by Hivac Ltd., 1935.
Science Museum Group
© The Board of Trustees of the Science Museum

Hivac "midget" valve type XD, sheet anode embossed H, (RMW/D83A - McVitie Weston number), made by Hivac Limited, aka the High Vacuum Valve Company, London.

Hivac “midget” range of valves were initially developed for hearing aids but by 1936 they were also being sold “for constructing pocket radios and truly portable sets.” By 1938, Hivac were advertising the use of these miniature radio valves “allow compactness in assembly of components" and were suitable for HF/VHF receivers. Some Hivac midget valves were used in German and British clandestine radios during the Second World War.

Details

Category:
Electronic Components
Object Number:
1972-141/667
type:
radio valve
credit:
STC plc