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ID = 18139
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to CV645 = B27_GE = 38276 = UV876 = C376 = 1938
Similar Tubes
Other class quality (otherwise equal):

Base Edison giant, E40 = 40 mm-Goliat (Codex=Edison 10 mm)
Was used by Military and/or Government
Filament Direct

British service code for US 876 ballast tube. Voltage range 40 - 60 at 1.7 amps. This tube in series with the primary of a suitably designed transformer to maintain essentially constant input voltage to the primary over a range of line variation of 20 volts.

Dimensions (WHD)
incl. pins / tip
x 196 x 53 mm / x 7.72 x 2.09 inch
Weight 94 g / 3.32 oz
Information source Babani, International Radio Tube Encyclopaedia   p. 317
-- Original-techn. papers.   
Taschenbuch zum Röhren-Codex 1948/49

cv645_so.png CV645
Anonymous 10 Collector

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