Radios antiguas y Radios de Colección
R215A
| Base |
Peanut (WECO 1919/1920)
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| Usada en |
Radio/TV-reception etc. |
| Filamento |
Vf 1.1 Volt / If 0.25 Ampere / Direct / Battery = |
| Descripción |
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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Dimensiones
(Alt,Ancho,Prof.)
incl.pins/tip |
x 69 x 16 mm / x 2.72 x 0.63 inch |
| Peso |
10 g / 0.35 oz |
| Precios de válvulas |
3 Precios de válvulas (visible
solo para miembros)
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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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Número de
modelos en Radiomuseum.org con esta
válvula:13
Colección personal de
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[rmxtube-en]
| Cumplimiento de datos |
Más información |
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