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P225

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ID = 11414
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Developer: Triotron (tubes) = Brand of Schrack, Austria 
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to P225
Similar Tubes
Normally replaceable-slightly different:
  L227D ; PP215 ; PP230
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =
Information source Babani, International Radio Tube Encyclopaedia   p. 124 & 125
- - Manufacturers Literature   1935
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
4_29.png P225: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		p225data.png
P225: own collection
Peter den Boer
Usage in Models 1= 1934? ; 1= 1936?? ; 1= 1938? ; 1= 1938
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4

Collection of

Oliver Harlow (GB)
 
p225_triotron.jpg

 
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