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Summary
| Description |
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
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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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This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:58, 11 June 2015 | | 480 × 622 (64 KB) | Chetvorno | User created page with UploadWizard |
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