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4078A

Information - Help 
ID = 71975
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  High Voltage Half-Wave Mercury-Vapor Rec   Power-supply 
Identical to 4078A
Similar Tubes
Normally replaceable-slightly different:
  2V/531E
Successor Tubes 2V/531E  

Was used by Telephony
Filament Vf 5 Volts / If 20 Ampere / Direct
Description

Va<20kV piv; Ia<2.5A mean.
Used as rectifier for telephony transmitters.

This is the same as the 4078GA thyratron without the control grid.

 
Information source - - Manufacturers Literature   STC data

 

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