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42A1

Information - Help 
ID = 17991
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Current Regulator, Iron in Hydrogen 
Identical to 42A1
First Source (s)
17.Sep.1935 : Electron Tube Registration List 47

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ua)
Filament
Description

Ballast tube for use with 300 mA serie tubes, no pilot lamp taps, giving 42.3V drop.
Registered to Champion Radio Tube Co.

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

39_pin.png 42A1: Manufacturer's Literature
Emilio Ciardiello

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