Radio Antica e Radio d'epoca
HK255
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Stato:
USA (Stati Uniti d'America)
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| Identico a |
HK255
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Evoluzioni
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HK255H
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| Utilizzata per |
Transmittertube (Radio) |
| Filamento |
Vf 14 Volt / If 30 Ampere / Direct / Specified voltage AC/DC |
| Descrizione |
Pa = 500W
This gridless GAMMATRON was developed so as not to infringe with the Lee de Forest patent (owner RCA) on the control grid. Instead, the plate close to the filament has influence on the electron flow towards the other plate (anode).
Hard-glass bulb, two anode caps from one side, two gamma plate caps from the opposite side and a dummy top cap for stability.
The only Gammatron made in quantity.
Testo in altre lingue
(può variare)
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Dimensioni
(LxAxP)
incl.pins/tip |
x 462 x mm / x 18.19 x inch |
| Bibliografia |
Tube Lore (II) p. 217
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HK255: F.C. Jones
Wolfgang Holtmann
Segue ...
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| Conformità dei dati |
Ulteriori informazioni |
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