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MU25

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ID = 56348
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Half-Wave Mercury-Vapor Rectifier   Power-supply 
Identical to MU25

Base Edison giant, E40 = 40 mm-Goliat Top contact screw type.
Was used by Industrial
Filament Vf 4 Volts / If 28 Ampere / Half indirect / Specified voltage AC/DC
Description

1936 Ediswan data states: Va <1000 rms; Ia <25A d.c. This voltage rating is greater than later literature. In 1962 Rating of the obsolete type is quoted as <500V piv.

 
Dimensions (WHD)
incl. pins / tip
110 x 400 x mm / 4.33 x 15.75 x inch
Weight 700 g / 24.69 oz
Information source Babani, International Radio Tube Encyclopaedia   p. 282 & 283
- - Manufacturers Literature   August 1948 and approx 1936. Also AEI 1962.

baretter_e40~~2.png MU25: Fin Stewart
Fin Stewart


Just Qvigstad
mu25data.png
MU25: own collection
Peter den Boer

 

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