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ID = 7726
Brand: Thermion; Lent (Nijmegen)
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to DG102
Similar Tubes
Normally replaceable-slightly different:
Heater different:
  1823 ; 506 ; RGN1054
Production stop Feb.1938

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 1 Ampere / Half indirect
Description This is a Thermiode, a glass tube in a shielding of nickel-iron alloy to prevent electric or magnetic interference. As for rectifiers this was also done, but was of no use. 
Information source - - Manufacturers Literature   1933/34

dg2_thermion_3.png DG102: Thermion Katalog
Wolfgang Holtmann

Just Qvigstad
DG102: own collection
Peter den Boer


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