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UD4_Triode

Information - Help 
ID = 29782
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Triode, vacuum   Audio Frequency 
Identical to UD4_Triode

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 4 Volts / If 0.1 Ampere / Direct
Literature - - -   
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e_trioton_ud4lr_2.jpg
UD4_Triode: PROPIA
Pedro Prieto-Castro

 
ud4.png
UD4_Triode: Funk-Bastler 1928, Heft 41
Hartmut Völler



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