Mazda 1R5 heptode valve, 1933-1966

Made:
1933-1966 in Ponders End
Mazda heptode frequency changer valve, type 1R5 Mazda heptode frequency changer valve, type 1R5

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Mazda heptode frequency changer valve, type 1R5
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Mazda heptode frequency changer valve, type 1R5
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Mazda heptode frequency changer valve, type 1R5, made by Edison & Swan United Electric Light Company, Ponders End, London, England, 1933-1966

Details

Category:
Electronic Components
Object Number:
1966-125
Materials:
plastic (unidentified), metal (unknown) and glass
Measurements:
overall: 55 mm x 25 mm x 25 mm,
type:
thermionic valve
credit:
From the Ministry of Supply