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TT-15

Information - Help 
ID = 32780
       
Country:
United States of America (USA)
Brand: Bendix, Red Bank Division, Eatontown (NJ)
Tube type:  ANY OTHER - NOT A TUBE, general 
Identical to TT-15

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament
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-15 has 1000 ohms heaters and 500 ohms temperature sensing resistors, 130 sec time constant.

Also used in bridge circuits for measuring RMS value of an arbitrary waveform, compared with a known DC current flowing in the opposite branch.

 
Information source - - Manufacturers Literature   
  chrono_app1_4.png
  TT-15: Manufacturer's Literature
Emilio Ciardiello
 
tt_15_1_enh.jpg
TT-15: Private collection
Emilio Ciardiello

 
chrono_pin_3.png
TT-15: Manufacturer's Literature
Emilio Ciardiello

 
chrono_1_3.png
TT-15: Manufacturer's Literature
Emilio Ciardiello


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