Antique radios, Old Time Radios
PLAV9A
Base |
UV-Base (4 Pins+Bayonet, USA 1914 WE)
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Was used by |
Radio/TV-reception etc. |
Filament |
Vf 1.25 Volts / If 0.08 Ampere / Direct / Battery = |
Description |
This gridless triode 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).
For marking purposes, the upper part of the glass bulb of the PLAV9 tubes was painted blue, at least for a while.
Text in other
languages (may
differ)
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Information source |
-- Original prospect or advert
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Just Qvigstad
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PLAV9A: Riepka, Die Röhre, 1926
Anonymous 15 Collector
More ...
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Forum contributions about this tube
PLAV9A
Threads: 1 | Posts: 1
Hits: 1887 Replies: 0
PLAV9A (PLAV9A)
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Otmar Jung
13.Nov.08
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1
Dankenswerterweise hat Herr Eckhard Kull den folgenden Auszug aus der Firmen-Zeitschrift der Fa. Huth "Die Antenne", Heft 1, 1924, zur Verfügung gestellt. Darin werden die Huth-Platione beschrieben. Attachments
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PLAV9A
End of forum contributions about this tube
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