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P425_Triotron

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ID = 19956
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Vacuum Pentode   Power/Output 
Identical to P425_Triotron
Similar Tubes
Normally replaceable-slightly different:
  L425D ; M43 ; P443 ; PP415 ; PP430 ; RES364
Other base:
  P425_B4
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC
Description

"Undistorted output 1800mW" Advertisement December 2nd 1931

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
Wireless World (The), London (WW, 79)   Advertisement Dec 2 1931
- - Manufacturers Literature
triotron_9.png P425_Triotron: Triotron Röhrenkatalog von 1942
Wolfgang Bauer

Just Qvigstad 		triotron_7.png
P425_Triotron: Triotron Röhrenkatalog von 1942
Wolfgang Bauer
More ...
Usage in Models 1= 1931 ; 2= 1933
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of

Karl Reiter (A)
Rudolf Osterkamp (D)
 
p425.png

P425_Triotron
 
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