Antique radios, Old Time Radios
EF37A
|
Country:
Great Britain (UK)
|
|
| Identical to |
EF37A
= OM5B
= CV358
= 5A/157D
= 5A/157D
|
| Similar
Tubes |
Other class quality (otherwise equal):
EF36
; EF37
Different maximum ratings:
ME1400
Other characteristic (electr. data):
CV432
|
| First year |
1942
-- Collector info (Sammler)
|
| Base |
Octal (Int.Octal, IO) K8A, USA 1935
Top contact with a cap.
|
| Filament |
Vf 6.3 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
Low hum and low microphony version of the EF37.
Typically Va=250, Vg2=100, -Vg1=2. Ia=3mA, gm=1.8mA/V.
Text in other
languages (may
differ)
|
Dimensions (WHD)
incl. pins / tip |
32 x 100 x mm / 1.26 x 3.94 x inch |
| Tube prices |
3 Tube prices (visible for members
only)
|
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
|
|
EF37A: RTT 1974 (Franzis) 13. Auflage
Martin Renz
|
Just Qvigstad
|
EF37A: Mullard Maintenance Manual
Achim Dassow
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6
Collection of
Collection of a member from FIN Collection of a member from CH |
|
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Variants
EF37A with tubular (straight) bulb
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Forum contributions about this tube
EF37A
Threads: 1 | Posts: 1
|
Hits: 3238 Replies: 0
EF37A (EF37A)
|
Egon Strampe
18.Oct.08
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1
Aus "radio mentor" 1/50 Attachments
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EF37A
End of forum contributions about this tube
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