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ID = 2928
Great Britain (UK)
Brand: Osram-Valves GB (not MO-Valves)
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to U41
Similar Tubes
Other shape (e.g. bulb type):

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Filament Vf 1.25 Volts / If 0.2 Ampere / Direct / Parallel, (AC/DC defined voltage)
Description Va <35kV piv Ia<2mA mean. 
Dimensions (WHD)
incl. pins / tip
34 x 103 x mm / 1.34 x 4.06 x inch
Information source - - Manufacturers Literature   
U41: Röhrensammlung
Wolfgang Bauer

Michael Schlör


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