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ID = 32781
United States of America (USA)
Brand: Bendix, Red Bank Division, Eatontown (NJ)
Tube type:  ANY OTHER - NOT A TUBE, general 
Identical to TT-17

Base Miniatur-7-Pin-Base B7G, USA 1940
Description Chronotron tube. The tube contains two heaters and two electrically isolated thermistor elements. Connected in the circuit of a low frequency oscillator, it controls the period by thermal feedback. TT-17 has 2000 ohms heaters and 500 ohms secondaries resistances, 2 sec time constant. 
Information source - - Manufacturers Literature   
  TT-17: Manufacturer's Literature
Emilio Ciardiello
TT-17: Manufacturer's Literature
Emilio Ciardiello

TT-17: Manufacturer's Literature
Emilio Ciardiello

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