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R215A

Information - Help 
ID = 25789
       
Country:
Canada
Brand: Northern Electric Co. Ltd.; Canada
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Triode, vacuum   Universal 
  <1925 rare.
Identical to R215A = 215A = CW-1344 = 4215A = WE215A = 38015 = Wecovalve = VT-5 = CW38015 = 215A_Nissl
Similar Tubes
Other base:
  Wecovalve_4pin

Base Peanut (WECO 1919/1920)
Was used by Radio/TV-reception etc.
Filament Vf 1.1 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 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.

 
Dimensions (WHD)
incl. pins / tip
x 69 x 16 mm / x 2.72 x 0.63 inch
Weight 10 g / 0.35 oz
Tube prices 3 Tube prices (visible for members only)
 
n.e.comp_r215a_r.jpg
R215A: O.F.
Otto Frosinn

 
wecosockel~~1.gif
R215A: KoBi
Konrad Birkner † 12.08.2014

 
r215a_dat.png
R215A: Datenbl. R215-A Northern Electric Comp.
Otto Frosinn


Usage in Models 1= 1924 ; 7= 1925 ; 1= 1928

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):9


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