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File:Bipolar Tesla transformer 1908.jpg

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Summary

Description
English: 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.
Date
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
Author Harry La Verne Twining

Licensing

Public domain
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.

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Captions

Bipolar Tesla coil from 1908

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depicts

1 July 1909Gregorian

image/jpeg

bea12cf1586b450b1976a372c5e3f16e4a2af600

65,195 byte

622 pixel

480 pixel

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Date/TimeThumbnailDimensionsUserComment
current02:58, 11 June 2015Thumbnail for version as of 02:58, 11 June 2015480 × 622 (64 KB)ChetvornoUser created page with UploadWizard

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