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DAC21

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ID = 1862
    
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Country:
Europe
Brand:Common type Europe tube/semicond.
Developer:Philips; Eindhoven (tubes international!); Miniwatt 
Tube type: Diode-Triode   Audio Frequency 
Identical toDAC21=MDAC21
Similar Tubes
Other base:
 DAC21_9pin
First year1940 Tube leaflet collection E.Erb *Analysis by original leaflets
First Source(s)
Mar.1940 : Philips Bulletin # D 78
Predecessor TubesKBC1  DAC21_9pin  
BaseOctal (Int.Octal, IO) K8A, USA 1935 (Codex=Vx)
FilamentVf 1.4 Volts / If 0.025 Ampere / Direct /Battery =
DescriptionThe 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 prices6 Tube prices (visible for members only)
Information sourceTaschenbuch zum Röhren-Codex 1948/49   
dac21.png
DAC21: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
oc14.pngDAC21: RTT 1974 (Franzis) 13. Auflage
Martin Renz

Just Qvigstad		dac21_spec.png
DAC21: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
Usage in Models3= 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

Collection of

 
rhre_dac21_2.jpg

DAC21
 
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