radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

CW-1344

Information - Help 
ID = 25599
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Triode, vacuum   Universal 
Identical to CW-1344 = 4215A = WE215A = 38015 = Wecovalve = 215A = VT-5 = CW1344 = CW38015 = CW-38015 = R215A = 215A_Nissl
Similar Tubes
Other base:
  Wecovalve_4pin
First year 1919 Saga of the Vacuumtube, Tyne page 371

Base SPECIAL TUBEBASE in general
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)
Literature -- Original-techn. papers.   
Saga of the Vacuumtube, Tyne   
 
cw1344.jpg
CW-1344: KoBi
Konrad Birkner † 12.08.2014

 
wecosockel~~5.gif
CW-1344: KoBi
Konrad Birkner † 12.08.2014

 


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg