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A_Nelson

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ID = 28371
       
Country:
Great Britain (UK)
Brand: Nelson Electric Co. Ltd.; London
Developer: Nelson Electric Co. Ltd.; London 
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 very rare. ***
Identical to A_Nelson
Similar Tubes
Heater different:
  DE06_Nelson
First year 1926 Saga of the Vacuumtube, Tyne Seite 393

Base Europe 4-Pin (A, 4A, B4, since 1914)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.45 Ampere / Direct / Battery =
Description

Manufacturer's data states 0.45A for each of the three filaments.

See Tyne page 393: In 1926 Nelson Electric Co. Ltd. brought 4 different "Multivalves" to the market, designated A, DEA, DE2 and DE.06 (D.E.06. DE06). All of them have three filaments, controlled by a "scisors switch" at the bottom of the base. Any one of the three filaments could be used in case of an open heater. Opening the switch put two of the filaments in parallel, thus making it a power valve. The valves show two round labels on the glass side: a trade mark "Nelson Multi" with a picture of Lord Nelson. On the other side there is a label "Entirely British Manufactured" and in the center BBC. The banderole shows type and values of the heater.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
38 x 108 x 38 mm / 1.50 x 4.25 x 1.50 inch
Weight 55 g / 1.94 oz
Literature The Wireless World, London (WW, 79)   Jan 20 1926 Advertisement p23
 
nelson_a_bild1.jpg
A_Nelson: Rudolf Osterkamp aus eigener Sammlung
Rudolf Osterkamp

 

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