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ID = 57569
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Full-Wave Rectifier inert gas filled   Power-supply 
  Ca. 1925 up to 1945 very rare. ***
Identical to U600 = 68530 = 367
Similar Tubes
Normally replaceable-slightly different:

Base Philips big W4
Was used by Industrial
Filament Vf 2 Volts / If 8 Ampere / Direct / Specified voltage AC/DC

"Tungar" Rectifier for battery charging 20V 6A output.
(This type was also known as a Kenotron and was pioneered by Fleming) Ref Electrical Educator J A Fleming 1927.

The U600 was later renamed 68530 this initially being the catalogue number.

Fitted with special 4 pin base and is the same as the Philips 367 (used in the Philips 366 battery charger)

Dimensions (WHD)
incl. pins / tip
x 150 x 80 mm / x 5.91 x 3.15 inch
Weight 113 g / 3.99 oz
Information source - - Manufacturers Literature   
-- Collector info (Sammler)   
Babani, International Radio Tube Encyclopaedia

367_base~~1.png U600: Fin Stewart
Fin Stewart

Just Qvigstad
U600: own collection
Peter den Boer



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