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SY-222

Información - Ayuda 
ID = 86691
       
País:
Estados Unidos
Marca: Sylvania (Hygrade, GTE, Nilco); Emporium (PA)
Diseñador: Sylvania (Hygrade, GTE, Nilco); Emporium (PA) 
Tipo:  Screen-grid Tetrode   Audio Frequency 
Idéntica a SY-222
Válvulas similares
Other base and data slightly different:
  SP122
Válvulas Sucesoras 1929   UY224  

Base UY-Base, 5 Pins (USA, April 1927) Top contact with a cap.
Usada en Radio/TV-reception etc.
Filamento Vf 2.5 Volt / If 1.75 Ampere / Indirect
Descripción

The 222 (AC) was marketed by several manufacturers, mainly Sylvania. It was a combination of the UX222 and UY227. It had a relatively short commercial life and was rplaced by the UY224.

 
Dimensiones
(Alt,Ancho,Prof.)
incl.pins/tip
x 123 x 45 mm / x 4.84 x 1.77 inch
Peso 48 g / 1.69 oz
Literatura -- Collector info (Sammler)   
Tube Lore (II)   p. 26

y222.png SY-222: Fin Stewart
Fin Stewart


Just Qvigstad
 
sylvania_sy_222_bm.jpg

 

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