Antique radios, Old Time Radios
3D21A
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Country:
United States of America (USA)
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| Identical to |
3D21A
= CV2659
= 5B/152D
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| Similar
Tubes |
Other shape (e.g. bulb type):
3D21B
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| First Source
(s) |
30.Sep.1957 : Electron Tube Registration List 2017
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| Predecessor Tubes |
3D21
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Successor Tubes
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3D21B
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ucf)
Top contact with a cap.
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| Filament |
Vf 6.3 Volts / If 1.7 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Centre-tapped heater. May also be operated at 12.6V 0.85A with the sections in series. Primarily designed as blocking oscillator, pulse modulator and deflection amplifier. Also used as high voltage series regulator.
ST-16 domed bulb.
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Dimensions (WHD)
incl. pins / tip |
46 x 122 x mm / 1.81 x 4.80 x inch |
| Tube prices |
2 Tube prices (visible for members
only)
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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3D21A: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
More ...
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Just Qvigstad
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3D21A: Manufacturer's Literature
Emilio Ciardiello
More ...
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Collection of
Collection of a member from FIN
| Documents about this component |
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