Antique radios, Old Time Radios

EB91

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

Dec.1946 : L'Histoire Singulière du Tube Radio; G. Duperray 2009 ref. Wirel. World

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 / Specified voltage AND current AC/DC

Tube prices

6 Tube prices (visible for members only)

Information source

Taschenbuch zum Röhren-Codex 1948/49

EB91: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus †
EB91: ARRL Handbook 1972 Anonymous 10 Collector More ...	Just Qvigstad	EB91: Mullard - original papers Detlef Narten More ...

Usage in Models

2= 1946 ; 5= 1949 ; 19= 1950 ; 2= 1951? ; 29= 1951 ; 1= 1952?? ; 4= 1952? ; 21= 1952 ; 8= 1953? ; 39= 1953 ; 4= 1954?? ; 3= 1954? ; 66= 1954 ; 4= 1955?? ; 2= 1955? ; 32= 1955 ; 16= 1956?? ; 6= 1956? ; 28= 1956 ; 10= 1957?? ; 12= 1957? ; 22= 1957 ; 7= 1958?? ; 11= 1958? ; 22= 1958 ; 4= 1959?? ; 9= 1959? ; 26= 1959 ; 15= 1960?? ; 9= 1960? ; 15= 1960 ; 1= 1961?? ; 21= 1961? ; 10= 1961 ; 2= 1962? ; 17= 1962 ; 5= 1963?? ; 10= 1963? ; 9= 1963 ; 1= 1964?? ; 13= 1964? ; 3= 1964 ; 1= 1965?? ; 12= 1965? ; 8= 1965 ; 6= 1966?? ; 11= 1966? ; 2= 1967?? ; 1= 1967? ; 2= 1967 ; 4= 1968?? ; 1= 1970? ; 1= 1972?? ; 1= 1974?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):595

Collection of

EB91

Forum contributions about this tube

EB91

Threads: 1 | Posts: 2

Hits: 3327 Replies: 1

EB91 first availability

Pieter Hooijmans
01.Sep.17

EB91 first availability

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

EB91 first availability

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

EB91
End of forum contributions about this tube

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