. The principles underlying radio communication . FiQ. 119 Connec-Tions of ^cKSeT^enerAtorD - exciter ArrrkstureC5-A-C genenaTor LP - E-Xciter -fieldAF- iLlterndtbr -fieldPi Pz~^^S conec-tionsK - ^endin^ Ke^T - Coil o| transformer Ac. rheo. (^e-nereiTor S<:heme. 0+ connection of <a Tr«3ictor jet ^cnerciTor<And eXciTer The speed of rotation of the alternator is almost always muchhigher than that of an engine; it is therefore stepped up bypulleys and belts, or sprockets and chain, or gears, the smallerpulley or sprocket or gear being on the generator shaft. The generator may b
. The principles underlying radio communication . FiQ. 119 Connec-Tions of ^cKSeT^enerAtorD - exciter ArrrkstureC5-A-C genenaTor LP - E-Xciter -fieldAF- iLlterndtbr -fieldPi Pz~^^S conec-tionsK - ^endin^ Ke^T - Coil o| transformer Ac. rheo. (^e-nereiTor S<:heme. 0+ connection of <a Tr«3ictor jet ^cnerciTor<And eXciTer The speed of rotation of the alternator is almost always muchhigher than that of an engine; it is therefore stepped up bypulleys and belts, or sprockets and chain, or gears, the smallerpulley or sprocket or gear being on the generator shaft. The generator may be of any of the three possible types pre-viously described; for example, one of the permanent SignalCorps stations uses an inductor alternator (Sec. 74) ; one kind ALTERNATORS FOR RADIO USE. 195 of tractor set also has the inductor type; another has the re-volving armature. If it becomes necessary to open the ma-chine it is easy to discover which type it is. If the rotor, orrevolving part, has no windings at all, then we are dealing withan inductor alternator; if the circuit leading to the transmittingapparatus (not necessarily the key, because that may be in thefield circuit) comes from the slip-rings, then the revolving partmust be the arm
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwashi, bookyear1922
