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P4_Longlife

Information - Help 
ID = 20943
       
Country:
Netherlands
Brand: Longlife, the Hague
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to P4_Longlife
Similar Tubes
Normally replaceable-slightly different:
  1561
Production stop Feb.1938

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 4 Volts / If 2 Ampere / Direct
Description Va max = 2 x 500 Volt, max DC current = 120 mA. 
Information source - - Manufacturers Literature   Sept. 1935
 
1823~~4.png
P4_Longlife: Prüfkarte Röhrenprüfgerät W 18N
Jörg Kulbe

 

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