Antique radios, Old Time Radios
3B21
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| Tube type: |
Full-Wave Rectifier inert gas filled Power-supply |
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| Identical to |
3B21
= 38401
= CV2959
= EL302.5
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| Similar
Tubes |
Different maximum ratings:
3B22
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| First Source
(s) |
28.Oct.1942 : Electron Tube Registration List rec. 308
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Filament |
Vf 2.5 Volts / If 5.5 Ampere / Direct |
| Description |
Graphite anode, argon filled rectifier. 500V peak, 1A.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Tube Lore (I)
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3B21: Manufacturer's Literature
Emilio Ciardiello
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Just Qvigstad
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3B21: Manufacturer's Literature
Emilio Ciardiello
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