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UY21

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ID = 629
       
Country:
Netherlands
Brand:
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to UY21
Similar Tubes
Other base:
  UY11 ; UY1N ; UY3
First year Feb.1941 Tube leaflet collection E.Erb Analysis by original leaflets (P11)
First Source (s)
May.1941 : Radio-Mentor 1941 # 5
1941 : Philips-Buch III = 1941
Predecessor Tubes CY1   UY1   UY1N   CY21  
Successor Tubes UY41  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wa)
Was used by Radio/TV-reception etc.
Filament Vf 50 Volts / If 0.1 Ampere / Indirect / Series, AC/DC
Tube prices 5 Tube prices (visible for members only)
Literature Philips Bulletin   Juli 1941
Taschenbuch zum Röhren-Codex 1948/49   
  uy21.png
  UY21: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
uy21_a.jpg
UY21: scc
Christian Schaufelberger

 
uy21_so.png
UY21: rtt
Michael Schlör

 
uy21dat.png
UY21: Miniwatt Monatshefte
Anonymous 225 Collector


Usage in Models 3= 1941?? ; 2= 1941? ; 60= 1941 ; 2= 1942?? ; 25= 1942 ; 6= 1943? ; 16= 1943 ; 15= 1944 ; 1= 1945?? ; 4= 1945? ; 9= 1945 ; 1= 1946?? ; 7= 1946 ; 3= 1947? ; 8= 1947 ; 10= 1948 ; 14= 1949 ; 1= 1950?? ; 1= 1950? ; 2= 1950 ; 3= 1951 ; 1= 1952 ; 2= 1953 ; 1= 1954?? ; 1= 1955?? ; 1= 1958?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):199


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