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7878

Information - Help 
ID = 32549
       
Country:
Italy
Brand: Marconi Italiana (Marconifono), Officine / Ufficio Marconi; Genova, Roma
Tube type:  High Voltage Half-Wave Mercury-Vapor Rec   Power-supply 
Identical to 7878 = GU20

Base Edison giant, E40 = 40 mm-Goliat Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 4 Volts / If 11 Ampere / Direct
Description

Mercury vapor rectifier. 13KV PIV, 1.25A mean anode current

 
Dimensions (WHD)
incl. pins / tip
x 216 x 57 mm / x 8.50 x 2.24 inch
Weight 200 g / 7.05 oz
Information source - - Manufacturers Literature   

1_edison_rect~~1.png 7878: Fin Stewart
Fin Stewart


Just Qvigstad
7878_gu20_1_1.png
7878: Manufacturer's Literature
Emilio Ciardiello

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