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CW-38015

Information - Help 
ID = 25600
       
Country:
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Triode, vacuum   Universal 
  <1925 very rare. ***
Identical to CW-38015 = 215A_Nissl = D-98677 = OR1 = Wecovalve_A = CW-1344 = CW38015 = CW1344 = 215A = WE215A = VT-5 = Wecovalve
Similar Tubes
Other base:
  Wecovalve_4pin
First year 1919 Saga of the Vacuum Tube, Tyne page 371
Base Peanut (WECO 1919/1920)
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)
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.   
Saga of the Vacuum Tube, Tyne   
wecosockel~~3.gif CW-38015: KoBi
Konrad Birkner † 12.08.2014
More ...
Just Qvigstad 		cw_38015_datasheet.png
CW-38015: original Datenblatt
Helmut Weigl

Collection of

Ernst Erb (CH)
 
cw38015_1.jpg

 
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