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ID = 55785
Great Britain (UK)
Brand: GEC, General Electric Co.; London
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to U77
Similar Tubes
Normally replaceable-slightly different:

Base Octal (Int.Octal, IO) K8A, USA 1935
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 1.9 Ampere / Direct
Description <1.5kV PIV, <750mA peak each anode. <60µF reservoir Capacitance.
With 400-0-400 rms input Vout=430 at 250mA maximum. 
Dimensions (WHD)
incl. pins / tip
38 x 86 x mm / 1.50 x 3.39 x inch
Information source - - Manufacturers Literature   April 1961
U77: aus ebay, Verkäufer jdmsales
Gottfried Silberhorn


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