Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 32780
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

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   
  TT-15: Manufacturer's Literature
Emilio Ciardiello
TT-15: Private collection
Emilio Ciardiello

TT-15: Manufacturer's Literature
Emilio Ciardiello

TT-15: Manufacturer's Literature
Emilio Ciardiello

from Just Qvigstad

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]