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TB622

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ID = 13083
       
Country:
France
Brand: Dario (tubes) - voir aussi La Radiotechnique
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to TB622
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.18 Ampere / Direct / Battery =
Information source L'ABCDaire des lampes de TSF des jeunes années   p. 91 & 135
Babani, International Radio Tube Encyclopaedia   p. 144 & 145
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49


Just Qvigstad
brans_roehren_vademecum_1942_p140_141_tb172_tb622_nb.png
TB622: Brans Röhren Vademecum 1942
Patrice Zeissloff

Collection of

Collection of a member from D
 
tb622_dario.jpg

 

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