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EB91

Information - Help 
ID = 2010
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Double Diode   Detector 
Identical to EB91 = 6AL5 = EAA91 = 6B32 = 6D2 = CV140 = CV283 = DD6_Ferranti_Cossor
Similar Tubes
Other class quality (otherwise equal):
  M8079 ; QA2404
First year 1949 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Jun.1949 : Daten und Schaltungen moderner ... Röhren; Philips # 3a
Predecessor Tubes EB41   EAA11  

Base Miniatur-7-Pin-Base B7G, USA 1940 (Codex=Zk)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC /
Tube prices 5 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
  eb91.png
  EB91: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
_dsc0565.nef.jpg
EB91: S.A.C.
Stig Comstedt

 
6d2_so.png
EB91: ARRL Handbook 1972
Michael Schlör

 
eb91_mullard_data_01.png
EB91: Mullard - original papers
Detlef Narten


Usage in Models 2= 1946 ; 5= 1949 ; 14= 1950 ; 3= 1951? ; 26= 1951 ; 4= 1952? ; 21= 1952 ; 7= 1953? ; 37= 1953 ; 2= 1954?? ; 3= 1954? ; 66= 1954 ; 4= 1955?? ; 27= 1955 ; 16= 1956?? ; 1= 1956? ; 22= 1956 ; 11= 1957?? ; 9= 1957? ; 22= 1957 ; 6= 1958?? ; 7= 1958? ; 18= 1958 ; 1= 1959?? ; 6= 1959? ; 20= 1959 ; 11= 1960?? ; 10= 1960? ; 12= 1960 ; 2= 1961?? ; 24= 1961? ; 8= 1961 ; 2= 1962? ; 13= 1962 ; 1= 1963?? ; 10= 1963? ; 5= 1963 ; 13= 1964? ; 2= 1964 ; 2= 1965?? ; 12= 1965? ; 6= 1965 ; 8= 1966? ; 1= 1967?? ; 1= 1967? ; 2= 1967 ; 4= 1968?? ; 1= 1970? ; 1= 1975?? ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):512


Forum contributions about this tube
EB91
Threads: 1 | Posts: 2
Hits: 505     Replies: 1
EB91 first availability
Pieter Hooijmans
01.Sep.17
  1

There seems to be quite some confusion about the first availability of the EB91 valve, where the official date of launch is quoted as 1949. However, to me it has now irrevocably been confirmed that the valve was available in 1946 in the UK.

My interpretation is the following. The EB91 was developed by Mullard, the British subsidiary of Philips. Proof to this is that the valve was used in three TV sets developed by Mullard/Philips in 1946: 463A, 563A and 663A. These were demonstrated at the 1947 Radiolympia show in London, and commercially launched the same year. The valve was also sold to the UK set maker Pye, who launched two sets in 1946, the B16T and D16T. They were announced in the December 1946 Wireless World and produced in 1947.

All in all the valve was probably released end of 1945, used for development in 1946 and ramped in production in 1947, all in the UK only. After that it was most likely taken over by the larger Philips Radiobuizen (Radio Valves) Group, standardized and launched Europe-wide in 1949.

Ernst Erb
04.Sep.17
  2

Please read post 5 here - to have the possible answer.

 
EB91
End of forum contributions about this tube

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