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ID = 2930
Great Britain (UK)
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to U8
First year Sep.1928 - - Manufacturers Literature leaflet
First Source (s)
Sep.1928 : - - Manufacturers Literature

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 7.5 Volts / If 2.5 Ampere / Direct / Specified voltage AC/DC

Va <500+500 rms at <120mA mean dc output.

Information source 70 Years of Radiotubes and V.   
- - Manufacturers Literature   Pamphlet 243
U8: Sammlung GJ
Anonymous 544 Collector

U8: Manufacturer's Literature
Emilio Ciardiello

from Just Qvigstad

Usage in Models 2= 1931

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of a member from D

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