Antique radios, Old Time Radios
CW-1344
| Base |
SPECIAL TUBEBASE in general
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| Was used by |
Military and/or Government |
| Filament |
Vf 1 Volts / If 0.25 Ampere / Direct / Battery = |
| Description |
Hendrik Johannes van der Bijl (WECO, USA) developed this first WECO tube. It is also called peanut-tube for it's very small size. 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 Tnermionic 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.
Text in other
languages (may
differ)
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Dimensions (WHD)
incl. pins / tip |
x 60 x 18 mm / x 2.36 x 0.71 inch |
| Weight |
10 g / 0.35 oz |
| Information source |
-- Original-techn. papers.
Saga of the Vacuum Tube, Tyne p. 292
Tube Lore (II)
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CW-1344: KoBi
Konrad Birkner † 12.08.2014
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Collection of
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