The inventions, researches and writings of Nikola Tesla : with special reference to his work in polyphase currents and high potential lighting (1894)
Martin, Thomas C, Tesla, Nikola · The Electrical Engineer · leaf 504
rts , larger and more perfected armatures of commercial motors , and in the space around the table a variety of motors and generators supplying currents to them was exhibited . The high frequency exhibit embraced Mr . Tesla ’ s first original apparatus used in his investigations . There was… … Fig . 311 . discharge coil exhibited by him in his lecture before the Ameri can Institute of Electrical Engineers , in May , 1891 . 1 At v and w are shown some of the first high frequency transformers . A number of various fields and armatures of small models of high frequency apparatus as shown at…
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