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A45

Information - Help 
ID = 28383
       
Country:
Great Britain (UK)
Brand: Metropolitan-Vickers (Metro-Vick, Cosmos); GB
Tube type:  Triode, vacuum   Universal 
Identical to A45
First year 1925 Saga of the Vacuumtube, Tyne Seite 373

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 4.5 Volts / If 0.65 Ampere / Direct / Battery =
Description

Descendant of type R. Bright Emitter.

Story of Cosmos valves see here

 
Tube prices 1 Tube prices (visible for members only)
Literature Saga of the Vacuumtube, Tyne   p.373
70 Years of Radiotubes and V.   p.196
 
a45cosmos.jpg
A45: own collection
John Koster

 
a45_spec.png
A45: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector



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