Significant-frequency alternators with the variable-reluctance kind were utilized commercially to radio transmission in low-frequency radio bands. These were being utilized for transmitting Morse code and, experimentally, for transmitting voice and music. From the Alexanderson alternator, both the sphere winding and armature winding are stationary, and existing is induced in the https://ceiling-fan-with-remote-c10964.tinyblogging.com/alternator-can-be-fun-for-anyone-79144368