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VR20

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ID = 83812
       
Country:
Germany
Brand: Niggl-Hochvakuum-Industrie, Niggl-Audion; München
Tube type:  Triode, vacuum 
Identical to VR20

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 3.5 Volts / If 0.47 Ampere / Direct / Battery =
Description

Ua = bis 200 V
Sättigung = 30/35 mA
Steilheit = 1.7 mA / V

 
Information source -- Collector info (Sammler)   Il Radio Giornale Nr 3, Marzio 1926


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