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200/25

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ID = 18029
       
Country:
Great Britain (UK)
Brand: Lissen Ltd.; London and Richmond, Surrey
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to 200/25

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Direct / Specified voltage AC/DC
Description

"0.25A regulator for direct current valves."

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
Wireless World (The), London (WW, 79)   1933 data book


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