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S215_Triotron

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ID = 59006
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Developer: Triotron (tubes) = Brand of Schrack, Austria 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to S215_Triotron
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base Europe 4-Pin B4 + side contact Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.18 Ampere / Direct / Battery =
Description

HF amplifier

 
Information source - - Manufacturers Literature   1935
Babani, International Radio Tube Encyclopaedia   P. 140 & 141
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

b4_tetrode~~13.gif S215_Triotron: Fin Stewart
Fin Stewart


Just Qvigstad
s215data.png
S215_Triotron: own collection
Peter den Boer

 

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