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NL-715

Information - Help 
ID = 83579
       
Country:
United States of America (USA)
Brand: National Electronics, Inc.; Geneva, IL
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Thyratron 
Identical to NL-715 = FG17 = 5557

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Was used by Industrial
Filament Vf 2.5 Volts / If 5 Ampere / Direct
Description

This tube is a negative control mercury vapor thyratron for use where it is desired to actuate the tube with a change in grid voltage. It requires very little grid power and is suitable for use in relay circuits where curent flow is desired in the absence of grid exitation.

 
Information source Tube Lore (II)   p. 90 & 158
 
3l_5557~~4.png
NL-715: Fin Stewart
Fin Stewart

 

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