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T5-438

Information - Help 
ID = 14836
       
Country:
Netherlands
Brand: Thermion; Netherlands
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to T5-438
Similar Tubes
Other shape (e.g. bulb type):
  5-438 ; E438
Production stop Feb.1938

Base Europe 5-Pin (O5A, B5) (Codex=F)
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description This is a Thermiode, a glass tube in a shielding of nickel-iron alloy to prevent electric or magnetic interference. 
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1933
 
dsc04943.jpg
T5-438: My "junk" box
Meyer Rochwerger

 
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T5-438
Peter den Boer

 


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