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ID = 7867
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to G4180
Similar Tubes
Normally replaceable-slightly different:
  1815 ; G4250 ; PV4201 ; RGN2504

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2.5 Ampere / Direct

Der Röhrencodex nennt 1,0A Heizstrom, was höchstwarscheinlich unzutreffend ist, denn die meisten anderen Datebücher, inbesondere osteuropäische, nennen durchweg 2,5A Heizstrom.

Information source Babani, International Radio Tube Encyclopaedia   p. 278 & 279
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 27, p. 26
Taschenbuch zum Röhren-Codex 1948/49

17_22.png G4180: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad

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