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ID = 19029
Brand: Péricaud, G. et A. Péricaud Fils (Junot, SEP, S.E.P.); Paris
Tube type:  Triode, vacuum   Detector 
  <1925 very rare. ***
Identical to Junot-Detecteur
First Source (s)
03.Nov.1923 : La Nature

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 4 Volts / If 0.65 Ampere / Direct / Battery = /

A nickel plated brass based tipped top tube. It is called "Detecteur" or "Triode Junot-Detecteur". A wild tube that attempts to avoid basic patents on the triode.... It has 6 discs with holes punched in the center stacked one above the other with the unconventional grid and filament passing through the centers. See also Peri-Tube at This tube has two filaments. An extra wire through the ceramic bottom of the base has to wound arond one filament pin to connect the second filament. Anode volts 50-80 Volt.

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Junot-Detecteur: EE
Ernst Erb

Junot-Detecteur: Publicité
Patrice Zeissloff

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