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215A_Nissl

Information - Help 
ID = 30946
       
Country:
Austria
Brand: Czeija, Nissl & Co., Standard, ITT, Alcatel; Wien
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Triode, vacuum   Universal 
  <1925 very rare. ***
Identical to 215A_Nissl = 215A = 4215A = WE215A = 38015 = Wecovalve = CW1344 = VT-5 = CW-1344 = CW-38015 = R215A
Similar Tubes
Normally replaceable-slightly different:
  239A
Other base:
  4215AB ; Wecovalve_4pin
First Source (s)
1919 : Saga of the Vacuum Tube, Tyne page 371,463

Base Peanut (WECO 1919/1920)
Was used by Radio/TV-reception etc.
Filament Vf 1.4 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 Thermionic Tube and its Applications" in 1920. (EE)

The peanut-tube was also produced in Canada.
In UK ST&C (Standard Telephone & Cables, London) has produced the 215A as 4215A (with adapter to B4 socket) and as 4215AB (with B4 base) to fit European standard socket. Tyne, p.370.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 69 x 16 mm / x 2.72 x 0.63 inch
Weight 10 g / 0.35 oz
Information source -- Original-techn. papers.   
Taschenbuch zum Röhren-Codex 1948/49   
Saga of the Vacuum Tube, Tyne
 
215a_base~~2.gif
215A_Nissl: Fin Stewart
Fin Stewart

 
215a_nissl_spec.png
215A_Nissl: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector


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