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Fleming_type-B

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ID = 50484
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Developer: Fleming - valves; GB 
Tube type:  Signal Diode - one single system   Detector 
  <1925 very rare. ***
Identical to Fleming_type-B

Base SPECIAL TUBEBASE in general
Was used by Radio/TV-reception etc.
Filament Vf 12 Volts / Direct / Battery =
Description

Ref. book: The Thermionic Valve and its Developement in Radio Telegraphy and Telephony by J. A. Fleming. the valve has a carbon filament.

 

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Fleming_type-B
Peter den Boer

Collection of

 
fleming_typebsmall.jpg

 

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