Antique radios, Old Time Radios

U12

Country:	Great Britain (UK)		Brand:	MO Valve Co. Ltd.; GB
			Tube type:	Full-Wave Vacuum Rectifier Power-supply

Tube ID = 3071

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Identical to	U12 = FW

Base	Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament	Vf 4 Volts / If: 2.5 Ampere / -: Direct /
Description	Va <350V rms. Ia <120mA mean. (0.7EUR in 1938)
Literature	- - Manufacturers Literature Taschenbuch zum Röhren-Codex 1948/49


	U12: "Trader" Service Sheet 518 Georg Richter

U12: Sammlung GJ
Anonymous 544 Collector

Variants

U12: rtt
Michael Schlör

U12: osram wireless guide 1931
Giuseppe Antonio Tusini

Usage in Models	2= 1931 ; 1= 1932? ; 11= 1932 ; 2= 1933? ; 24= 1933 ; 1= 1934?? ; 2= 1934? ; 22= 1934 ; 1= 1935? ; 25= 1935 ; 1= 1936? ; 42= 1936 ; 1= 1937? ; 16= 1937 ; 2= 1938 ; 5= 1945? ; 1= 1946??
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 159

Variants

RFJ
Roy Johnson

U12*dome_bulb

U12 with dome bulb

10.May.2012

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