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T3-453

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ID = 11676
       
Country:
Netherlands
Brand: Thermion; Netherlands
Developer: Thermion; Netherlands 
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to T3-453
Similar Tubes
Other shape (e.g. bulb type):
  3-453
Multiple differences or of other kind:
  C453
Production stop Feb.1938

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
Filament Vf 4 Volts / If 0.3 Ampere / Indirect / Specified voltage AC/DC
Description This is a Thermiode, a glass tube in a shielding of nickel-iron alloy to prevent electric or magnetic interference. To avoid the Philips penthode patent, Thermion calls it a tetrode because the surpressor grid is connected to the grid instead of the kathode/filament. Nevertheless, this is a plug-in replacement for the C453. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1933
 
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T3-453
Peter den Boer

 

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