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B438K

Information - Help 
ID = 13813
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Triode, vacuum 
Identical to B438K

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.1 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
b438_pic_1.jpg
B438K: Courtesy of Gorm Helt-Hansen
Anonymous 15 Collector

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from Just Qvigstad

Usage in Models 1= 1931? ; 2= 1931

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of a member from FIN

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