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AZ21

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ID = 2741
       
Country:
Netherlands
Brand:
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to AZ21 = GG1
Similar Tubes
Other base and data slightly different:
  AZ1 ; AZ21_9pin
First year 1941 Tube leaflet collection E.Erb *Analysis by original leaflets
First Source (s)
Jul.1941 : Radio-Mentor # 7
Predecessor Tubes AZ1   AZ21_9pin  
Successor Tubes AZ41  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wx)
Filament Vf 4 Volts / If 1.3 Ampere / Direct
Description The Philips 21- "Key Base" tubes were initially designed in 1940 with the 9-pin base B9G like the EF50. The later series production from 1942 on however was changed to the 8-pin Locktal-base B8G designed by Sylvania. 
Tube prices 8 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   Design = Philips
  az21_1.png
  AZ21: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
az21_038r.jpg
AZ21
Jacob Roschy

 
az21_sock.png
AZ21: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

 
az21_kennlinie.png
AZ21: Ratheiser RTH,3.Aufl.,1964
Egon Penker


Usage in Models 1= 1941?? ; 13= 1941 ; 1= 1942?? ; 23= 1942 ; 1= 1943?? ; 2= 1943? ; 32= 1943 ; 2= 1944? ; 41= 1944 ; 4= 1945? ; 16= 1945 ; 3= 1946?? ; 18= 1946 ; 1= 1947?? ; 14= 1947 ; 1= 1948?? ; 18= 1948 ; 22= 1949 ; 3= 1950?? ; 11= 1950 ; 6= 1951? ; 11= 1951 ; 3= 1952 ; 1= 1953? ; 6= 1953 ; 1= 1954?? ; 2= 1955?? ; 1= 1955 ; 1= 1956? ; 2= 1956 ; 4= 1957? ; 3= 1957 ; 3= 1958? ; 1= 1959 ; 1= 1960?? ; 1= 1960 ; 1= 1961 ; 1= 1962 ; 1= 1963?? ; 1= 1965 ; 1= 1966 ; 1= 1968??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):280


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