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W412

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ID = 15047
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  TRIODE (Detail uncertain) 
Identical to W412 = RE034
Similar Tubes
Normally replaceable-slightly different:
  A425 ; HR406 ; W4 ; W406
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 4 Volts / If 0.06 Ampere / Direct
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
w412.jpg
W412
Anonymous 719 Collector

 
1_198.png
W412: Telefunken Werkstattbuch
Wolfgang Bauer

 

Usage in Models 1= 1928?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of a member from D

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