Thomälen, Adolf, 1865-, Thomälen Adolf. Kurzes Lehrbuch der Electrotechnik. English · London, E. Arnold · leaf 188
Fig- 157 external current. The series-connection of armature, field and externalcircuit was that which first suggested itself. It has, however, become almostobsolete as far as generators are concerned. It was used for supplying anumber of arc lamps connected in series, but is quite unsuitable when…
Electrical engineering
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