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1D21

Information - Help 
ID = 12078
       
Country:
United States of America (USA)
Brand: Sylvania (Hygrade, GTE, Nilco); Emporium (PA)
Tube type:  Strobe Tube 
Identical to 1D21 = 631P1
Similar Tubes
Normally replaceable-slightly different:
  SN4_Strobotron

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament
Description

Strobotron, cold cathode neon flash tube. 350V.

 
Text in other languages (may differ)
Tube prices 2 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (I)   
  1d21sn4_sylv_appl.png
  1D21: Manufacturer's Literature
Emilio Ciardiello
 
1d21.jpg
1D21: M.N.
Michael Niermann

 
1d21.png
1D21: Manufacturer's Literature
Emilio Ciardiello


from Just Qvigstad

Usage in Models 1= 1949??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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