radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

EF22

Information - Help 
ID = 1870
       
Country:
Netherlands
Brand:
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to EF22 = W143 = CV303 = 6H2 = 6F22_Sweden
Similar Tubes
Other base:
  EF21_9pin ; EF41 ; EF9
First year Feb.1941 Tube leaflet collection E.Erb Philips Book III [178]
First Source (s)
Feb.1941 : Daten und Schaltungen moderner ... Röhren; Philips # 3
Jul.1941 : Radio-Mentor # 7
Predecessor Tubes EF9   EF21_9pin   EF22_9pin  
Successor Tubes 1947   EF41  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Waa)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Parallel / series AC/DC
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 29 Tube prices (visible for members only)
Literature - - Manufacturers Literature   1940
Philips Bulletin   Juli 1941
Taschenbuch zum Röhren-Codex 1948/49
  ef22.png
  EF22: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
ef22_philips.jpg
EF22: My tubes
Anonymous 413 Collector

 
ef22_sock.png
EF22: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

 
ef22_spez.png
EF22: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Usage in Models 2= 1941?? ; 29= 1941 ; 1= 1942?? ; 3= 1942? ; 36= 1942 ; 1= 1943? ; 42= 1943 ; 1= 1944?? ; 6= 1944? ; 51= 1944 ; 13= 1945? ; 21= 1945 ; 9= 1946?? ; 7= 1946? ; 45= 1946 ; 1= 1947?? ; 4= 1947? ; 50= 1947 ; 6= 1948?? ; 15= 1948? ; 67= 1948 ; 2= 1949?? ; 5= 1949? ; 40= 1949 ; 6= 1950?? ; 5= 1950? ; 30= 1950 ; 2= 1951?? ; 4= 1951? ; 16= 1951 ; 2= 1952?? ; 3= 1952? ; 10= 1952 ; 3= 1953 ; 2= 1954? ; 4= 1954 ; 6= 1955?? ; 2= 1955? ; 12= 1955 ; 1= 1956?? ; 1= 1956? ; 7= 1956 ; 3= 1957?? ; 3= 1957? ; 5= 1957 ; 3= 1958?? ; 3= 1958 ; 4= 1960?? ; 1= 1960 ; 1= 1962 ; 1= 1965?? ; 1= 1970?? ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):599


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg