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Bipolar Tesla transformer 1908

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Summary

A homemade Tesla coil transformer from 1908. It consists of a primary winding of about 12 turns of thick copper wire on a large cylindrical form around a secondary winding of thousands of turns of fine wire. Unlike most modern coils this has a bipolar output: both ends of the secondary are attached to high voltage electrodes at top, and during operation a spark jumps between them. The primary is located midway between the high tension ends, to discourage arcs striking it.

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nikola tesla electricity tesla coils
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Date

01/07/1909
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Source

Retrieved May 3, 2015 from Harry La Verne Twining and William Dubilier (1908) Wireless Telegraphy and High Frequency Electricity, published by the author, Los Angeles, p. 88, plate 4 on Google Books
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http://commons.wikimedia.org/
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Copyright info

public domain

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nikola tesla electricity tesla coils