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78_Coronet

Informazioni - Aiuto 
ID = 73240
       
Stato:
USA (Stati Uniti d'America)
Produttore: Arcturus Radio Tube Co.; Newark, NJ
Progettista: Arcturus Radio Tube Co.; Newark, NJ 
Tipo:  Pentodo a vuoto   RF/IF-Stage   Controllo (mu) 
Identico a 78_Coronet
Valvole simili
Altra base:
  78

Zoccolo Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Utilizzata per Radio/TV-reception etc.
Filamento Vf 6.3 Volt / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Descrizione

The Arcturus metal/glass type 78 tube was unusual in that it employed a glass disc instead of the conventional "pinch" for introduction of the lead-in wires into the glass bulb. The disc has the wires in a circular formation. The base is octal but an adaptor was sold with the tube to enable it to fit the normal U6A 6-pin tube socket. The adaptor measures 37 mm long, including pins, and is 30 mm diameter.

 
Dimensioni
(LxAxP)
incl.pins/tip
x 82 x 32 mm / x 3.23 x 1.26 inch
Peso 46 g / 1.62 oz
Bibliografia 70 Years of Radiotubes and V.   Pages 99 & 100
-- Collector info (Sammler)   


Just Qvigstad
Utilizzo nei modelli 1= 1935??

Numero totale di modelli di Radiomuseum.org che utilizzano questa valvola:1
 
arcturus_coronet_78_e816.jpg

 

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