Radio Antica e Radio d'epoca
Four-In-One
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Stato:
Gran Bretagna (Regno Unito)
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| Identico a |
Four-In-One
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| Prime serie |
1929
Tube Collector, June 2011, page 13.
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| Zoccolo |
SPECIAL TUBEBASE in general
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| Filamento |
If 0.5 Ampere / Direct / Battery = |
| Descrizione |
Quadruple Valve Co., Ltd., Nottingham has built the "Four-in one" valve in 1929. There were found two versions, one with the 4 horizontal triodes mounted in parallel as shown in the patent GB 280,258 and the other in a square formation. They have a total plate current of 8 mA at 80 - 120 V. A scaled-down version with three triodes is also known. See "Tube Collector" 13/3, June 2011 on page 13 with further references - also to pictures. See also the German "Polytron-4fach" from 1927 (Dr. G.O. Spanner GmbH). There are 12 pins on this tube but connections are not known.
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| Quotazioni |
1 Quotazioni (visibili solo per gli
associati)
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| Bibliografia |
-- Collector info (Sammler) BVWS bulletin vol. 24, no 1, 1999
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Four-In-One: Retro Radio 2015 Dezember Nr.4
Rudolf Osterkamp
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Collezione di
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[rmxtube-en]
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Ulteriori informazioni |
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