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EY81

Information - Help 
ID = 3896
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Damper, booster, flyback diode 
Identical to EY81 = 6R3
Similar Tubes
Normally replaceable-slightly different:
  6Д14П ; 6Д20П
Other class quality (otherwise equal):
  EY81F
Heater different:
  LY81 ; PY81
Different connections:
  6Z19
First year 1953 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Mar.1955 : -- Original-techn. papers.

Base Noval, B9A
Filament Indirect / Parallel, (AC/DC)
Tube prices 2 Tube prices (visible for members only)
  ey81.png
  EY81: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
ey81_siemens.jpg
EY81: My own collection
Hannu Alho

 
no29.png
EY81: RTT 1974 (Franzis) 13. Auflage
Martin Renz

 
ey81_techdat01.png
EY81: SEL Handbuch 1964
Peter Hoddow


Usage in Models 1= 1953 ; 1= 1955?? ; 7= 1955 ; 1= 1956?? ; 4= 1956? ; 8= 1956 ; 1= 1957?? ; 3= 1957? ; 9= 1957 ; 1= 1958?? ; 3= 1958? ; 20= 1958 ; 4= 1959 ; 3= 1960 ; 3= 1963?? ; 1= 1963? ; 1= 1964?? ; 1= 1964 ; 1= 1965?? ; 1= 1968??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):74


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