Antique radios, Old Time Radios
EE50
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Country:
Europe
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| Identical to |
EE50
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| First year |
1939
Tube leaflet collection E.Erb Philips-Book [178]
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| First Source
(s) |
25.Aug.1938 : Wireless World (The), London (WW, 79) p181
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| Predecessor Tubes |
EE1
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| Base |
Loctal-9-Pin (B9G) (Codex=Y)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Secondary Emission. 20mA/V.
Developed by Philips/Mullard for broad-band TV use in 1938 using an intermediate cathode for secondary emission to achieve high gain from a single tube. The B9G base and the all-glass construction with aluminium shield was developed for this tube to achieve short electrical paths and low capacitance.
It was quickly superseded by the EF50 - a standard pentode - of similar mechanical construction which has a lower noise figure.
Text in other
languages (may
differ)
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| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
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EE50: ficha de valvulas
Getulio Jimenez-Gomez
More ...
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EE50: RTT 1974 (Franzis) 13. Auflage
Martin Renz
More ...
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Just Qvigstad
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EE50: rtt
Anonymous 10 Collector
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
Collection of
Collection of a member from D |
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Variants
All glass valve without aluminium can with hooked pins.
Source Miniwatt-Dario advert in the magazine Le Haut-Parleur N ° 694 of December 4, 1938 special television.
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