Radio Antica e Radio d'epoca
R215A
| Zoccolo |
Peanut (WECO 1919/1920)
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| Utilizzata per |
Radio/TV-reception etc. |
| Filamento |
Vf 1.1 Volt / If 0.25 Ampere / Direct / Battery = |
| Descrizione |
Hendrik Johannes van der Bijl (WECO, USA) developed this first WECO tube. It is also called peanut-tube for it's very small size with special base. As Type N it has been finished in 1919 and was on market as 215A in the early 20ies - for nearly a decade. H.J. van der Bijl deducted the fundamental functional relationships of triodes and by that won a post at the Western Electric Company (WECO) as Senior Research Phyicist until the publication of the book "Theory of the Thermionic Tube and its Applications" in 1920. (EE) The peanut-tube was also produced in Canada and ST&C (Standard Telephone & Cables, London) has produced the 215A as 4215A and as 4215AB with standard european socket.
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Dimensioni
(LxAxP)
incl.pins/tip |
x 69 x 16 mm / x 2.72 x 0.63 inch |
| Peso |
10 g / 0.35 oz |
| Quotazioni |
3 Quotazioni (visibili solo per gli
associati)
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R215A: KoBi
Konrad Birkner † 12.08.2014
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Just Qvigstad
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R215A: Datenbl. R215-A Northern Electric Comp.
Otto Frosinn
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Numero
totale di modelli di Radiomuseum.org che
utilizzano questa valvola:13
Collezione di
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[rmxtube-en]
| Conformità dei dati |
Ulteriori informazioni |
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