Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 42
rs on the outsidesurface of the core only are active in cut-ting the lines of force, the ring woundarmature is more or less wasteful and isseldom encountered in wirgless telegraphinstallations. 42. Development of ArmatureWindings.—The subject of arma-ture windings is too comprehensiveto be treated… … 32 PRACTICAL WIRELESS TELEGRAPHY. armature windings may be classed into two principal types, the lap winding andthe wave ivinding. The development of the lap winding is shown in Fig. 32, where a number of armaturecoils, numbered 1, 2, 3, 4, 5, etc., successively, are assumed to be memnted on the…
Telegraph, Wireless
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