Tunzelmann, George William von, 1856- · New York, Scribner & Welford · leaf 87
E. Now if a shuttle-wound, or a single ring-armature with one coil, is employed, with a split tube commutator, although the currents in the leads will always be in the same direction, they will not be of constant strength, but will vary from a maximum to zero at each half revolution. To remedy…
Electric industries · Electricity
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