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ID = 36207
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Tube type:  Double Tetrode 
Identical to 5674 = GL-5674
Similar Tubes
Other characteristic (electr. data):
  FP54 ; GL-5740

Base 6-Pin-Base U6A, old, USA Top contact with a cap.
Was used by Technology / Measurement
Filament Vf 3.8 Volts / If 0.09 Ampere / Direct / Battery =

Dual balanced amplifier: single cathode and space charge grid, dual control grid and anode; thoriated tungsten filament cathode. The tube was intended as electrometer amplifier working in a Wheatstone bridge circuit, given in the data sheet.

Typical operating values:

  • 6 V anode voltage
  • 20 uA anode current
  • 5 V space grid voltage
  • -3.5 V control grid voltage
  • 5 x 10exp-15 A grid current
  • 1.2 amplification factor

5764 is quite similar to 5760 / FP54 with higher electrode assembly and approximately doubled electrode surface

Information source - - Manufacturers Literature   
Tube Lore (I)   
  5674: Manufacturer's Literature
Emilio Ciardiello
5674: Private collection
Emilio Ciardiello

More ...
5674: Manufacturer's Literature
Emilio Ciardiello

5674: Manufacturer's Literature
Emilio Ciardiello

More ...

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