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AZ4

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ID = 1888
       
Country:
Netherlands
Brand:
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to AZ4 = WE56
Similar Tubes
Other base:
  AZ12
Other base and other heater:
  1861
First year May.1938 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
May.1938 : Philips Bulletin
Predecessor Tubes 1561   RGN2004   AZ2   VG280   RGN2004_Topf-P8A   1561_P8A   1861  
Successor Tubes 1956   EZ81   GZ32   GZ34  

Base Europe side contact P8A (Au P, 8SC) (Codex=So)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 2.3 Ampere / Direct / Specified voltage AC/DC
Description

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Tube prices 27 Tube prices (visible for members only)
Information source - - Manufacturers Literature   
Taschenbuch zum Röhren-Codex 1948/49   Design = Philips
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

az4_1.png
AZ4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †

37_2.png AZ4: Telefunken Werkstattbuch
Wolfgang Bauer

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Just Qvigstad
az4_spec.png
AZ4: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

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Usage in Models 13= 1938 ; 2= 1939?? ; 1= 1939? ; 6= 1939 ; 3= 1940 ; 3= 1941?? ; 1= 1941? ; 11= 1941 ; 1= 1942? ; 11= 1942 ; 4= 1943?? ; 5= 1943 ; 2= 1944? ; 7= 1944 ; 2= 1945?? ; 4= 1945 ; 1= 1946?? ; 4= 1946 ; 1= 1947?? ; 2= 1947? ; 4= 1947 ; 2= 1948?? ; 5= 1948? ; 10= 1948 ; 1= 1949?? ; 1= 1949? ; 8= 1949 ; 10= 1950?? ; 1= 1950? ; 18= 1950 ; 1= 1951 ; 2= 1952?? ; 3= 1952? ; 1= 1952 ; 4= 1953 ; 1= 1954?? ; 3= 1954 ; 5= 1955?? ; 4= 1956? ; 1= 1956 ; 4= 1957?? ; 11= 1957? ; 2= 1957 ; 9= 1958? ; 1= 1958 ; 1= 1959 ; 1= 1960?? ; 2= 1960? ; 3= 1960 ; 2= 1961?? ; 2= 1961? ; 1= 1961 ; 1= 1962?? ; 1= 1962? ; 2= 1966 ; 1= 1967

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):213

Collection of

 
az4_trm_49~~1.jpg

AZ4
 

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