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3L31

Information - Help 
ID = 3619
       
Country:
Czechoslovakia
Brand: Tesla; Praha, Bratislava etc.
Tube type:  Vacuum Pentode   Power/Output 
Identical to 3L31 = EP221

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Vf 2.8 Volts / If 0.05 Ampere / Direct / Battery =
Description

Parallelschaltung der Heizfäden: Uf=1,4V; If=0,1A.

 
Dimensions (WHD)
incl. pins / tip
19 x 49 x mm / 0.75 x 1.93 x inch
  3l31_.png
  3L31: From Tesla 3101B
Georg Richter
 
tesla_3l31.jpg
3L31: GR
Georg Richter

 
3l31_sock.png
3L31: nach Datenblatt gezeichnet
Georg Richter

 
3l31_spec.png
3L31: data-sheet
Anonymous 15 Collector


Usage in Models 1= 1951 ; 1= 1953 ; 1= 1956 ; 1= 1957 ; 1= 1958

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5


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