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TB452

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ID = 13082
       
Country:
Great Britain (UK)
Brand: Dario - Impex Electrical Ltd. (see also Dario France); London
Tube type:  Screen-grid Tetrode   Audio Frequency   Controlling (mu) 
Identical to TB452 = 25_Pix = B255
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 screw type.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.15 Ampere / Direct
Information source L'ABCDaire des lampes de TSF des jeunes années   p. 91 & 135
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 177, p. 306

s_2_g_7.gif TB452: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20


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