Antique radios, Old Time Radios
DQ4a
Country:
Switzerland
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Identical to |
DQ4a
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Similar
Tubes |
Other base:
DQ4
; DQ4c
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Base |
Edison giant, E40 = 40 mm-Goliat
Top contact with a cap.
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Was used by |
Industrial |
Filament |
Vf 5 Volts / If 7.5 Ampere / Direct |
Dimensions (WHD) incl. pins / tip |
x 236 x 56 mm / x 9.29 x 2.20 inch |
Weight |
220 g / 7.76 oz |
Information source |
- - Manufacturers Literature Frank's Tube Pages
Schweizer Elektronenröhren 1917-2003, Willi E. Seite 59
Taschenbuch zum Röhren-Codex 1948/49
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
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DQ4a: BBC Röhren Handbuch 1
Aldo Patriarca
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DQ4a: Manufacturer's Literature
Emilio Ciardiello
More ...
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Just Qvigstad
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DQ4a: BBC Handbuch 1
Aldo Patriarca
More ...
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Collection of
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Forum contributions about this tube
DQ4a
Threads: 1 | Posts: 1
Hits: 2341 Replies: 0
DQ4a (DQ4a)
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Aldo Patriarca
03.Oct.12
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1
Dieser Zweiweggleichrichter stammt aus einem alten Telegraphie-Sender aus den 50ger Jahren. Die Endstufenröhre war eine TB3/2000-1. Die Gleichrichterröhren sind neuerem Datums und in sehr gutem Zustand (90%).
Neben den beiden Gleichrichterröhren befindet sich je eine Sicherung für den Anodenstrom.
Attachments
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DQ4a
End of forum contributions about this tube
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