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55A2

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ID = 18001
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Ballast Tube (neither FeH or Urdox)   Power-supply 
Identical to 55A2
First Source (s)
17.Aug.1935 : Electron Tube Registration List

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ub)
Was used by Radio/TV-reception etc.
Filament
Description

54.9 V voltage drop at 300 mA. Intermediate tap for driving one #40 or similar pilot lamp at about 4.25 V. Metal shield similar to that of 5Z4.

Registered to Champion Radio Tube Company.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   

40_pin~~4.png 55A2: Manufacturer's Literature
Emilio Ciardiello


Just Qvigstad
 

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