radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

412BU

Information - Help 
ID = 7465
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to 412BU
Similar Tubes
Normally replaceable-slightly different:
  506 ; RGN1054
First Source (s)
1929 : History of the British Radio Valve to 1940 p.168
Aug.1930 : Philips Bulletin R1164, p. 19

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Direct / Specified voltage AC/DC
Description

Va max 2x250V, Ia max 70 mA.

 
Information source Röhren-Vademecum; P.H. Brans; Antwerpen   p. 129
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   section 22, p. 20
Taschenbuch zum Röhren-Codex 1948/49
Babani, International Radio Tube Encyclopaedia

412bu.png 412BU: Fin Stewart
Fin Stewart


Just Qvigstad
Usage in Models 1= 1930

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of

 
cossor_412bu.jpg

412BU
 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  

Data Compliance More Information