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DAC21

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ID = 1862
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Diode-Triode   Audio Frequency 
Identical to DAC21 = MDAC21
Similar Tubes
Other base:
  DAC21_9pin
First year 1940 Tube leaflet collection E.Erb *Analysis by original leaflets
First Source (s)
Mar.1940 : Philips Bulletin # D 78
Predecessor Tubes KBC1   DAC21_9pin  
Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vx)
Filament Vf 1.4 Volts / If 0.025 Ampere / Direct / Battery =
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. There are also DAC21's with International octal bases. 
Tube prices 6 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
dac21.png
DAC21: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
oc14.png DAC21: RTT 1974 (Franzis) 13. Auflage
Martin Renz

Just Qvigstad 		dac21_spec.png
DAC21: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
Usage in Models 3= 1940?? ; 7= 1940? ; 19= 1940 ; 4= 1941?? ; 5= 1941? ; 11= 1941 ; 1= 1942? ; 15= 1942 ; 1= 1943?? ; 4= 1943? ; 5= 1943 ; 1= 1944? ; 6= 1944 ; 1= 1945?? ; 3= 1945? ; 3= 1945 ; 2= 1946? ; 1= 1946 ; 4= 1947 ; 1= 1948?? ; 2= 1948? ; 5= 1948 ; 1= 1949? ; 9= 1949 ; 1= 1950?? ; 3= 1951 ; 1= 1952?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):119
Museum "Philips Historische Producten"

Collection of

Jose Luis Villabona Horreo (E)
Georges Werts (B)
Collection of a member from FIN
Timo Rantasaari (FIN)
Hannu Alho (FIN)
Danko Tkalec (HR)
Ernst Rykkje (N)
Tomasz Szczesniak (PL)
Valery Gromov (RUS)
Ludvig Rylander (S)
Jacob Roschy (D)
Trev Levick (D)
Collection of a member from D
Daniel Doll (D)
Wolfgang Eckardt (D)
Peter Pfeiffer (D)
Otto Frosinn (D)
Karl - Heinz Bossan (D)
 
rhre_dac21_2.jpg

DAC21
 
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