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AZ21 Country:  Hungary      Brand:  Tungsram; Budapest (see also British T.)    Tube type:  Full-Wave Vacuum Rectifier   Power-supply  Tube ID = 2741 previous  |  next Identical to AZ21 = GG1 Similar Tubes Other base and data slightly different:  AZ1; AZ21_9pin First Series   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) Was used by Radio/TV-reception etc. Filament Vf 4 Volts / If: 1.3 Ampere / -: Direct / -: Parallel, (AC/DC) / Tube prices 1 Tube prices (visible for members only) Literature Taschenbuch zum Röhren-Codex 1948/49   Design = Philips     Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus

My Collection Danko Tkalec   Variants RVF-Röhrenbuch-M1,1947 Anonymous 15 Collector   Ratheiser RTH,3.Aufl.,1964 Egon Penker

Usage in Models (calculation each 25th of the month)   1= 1940 ; 11= 1941 ; 22= 1942 ; 1= 1943?? ; 1= 1943? ; 32= 1943 ; 1= 1944? ; 38= 1944 ; 4= 1945? ; 13= 1945 ; 16= 1946 ; 1= 1947?? ; 13= 1947 ; 1= 1948?? ; 1= 1948? ; 17= 1948 ; 22= 1949 ; 3= 1950?? ; 11= 1950 ; 5= 1951? ; 11= 1951 ; 3= 1952 ; 1= 1953? ; 3= 1953 ; 1= 1954?? ; 1= 1955 ; 5= 1957? ; 2= 1957 ; 2= 1958? ; 1= 1962? ; 2= 1964?? ; Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   246

Variants
Eigene Sammlung Albrecht Schwaderer	AZ21*Siemens Austria Ab 1950/51 bei Siemens Austria als Eigenbautype mit Saugstutzen an den Röhrenspitze gefertigt. 03.Dec.2008 Günter Denoth
	AZ21*Stahl Ab 1944 von Albis (CH) entwickelte Stahlröhre, deren Produktion 1945 wieder eingestellt wurde . Von den Stahlausführungen der ECH21, EF22, EBL21 und AZ21 wurden insegesamt nur einige hundert Stück hergestellt. Quelle: Willi, E., Schweizer Elektronenröhren, 2005. 07.Oct.2009

No further Information for AZ21

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