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Radiography and the 'x' Rays in Practice and Theory; With Constructional and Manipulatory Details

Radiography and the 'x' Rays in Practice and Theory; With Constructional and Manipulatory Details


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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: 33. There is, however, a modification, or, to speak more exactly, an addition to the ordinary coil, known as the ' Tesla' transformer, which may be used in conjunction with the alternating current dynamo, that gives fairly good results. We present illustrations of two forms of' Tesla ' apparatus at figs. 19, 20, and 21. These Fiq. 21.- Tesla Tkansfokmer. latter are constructed specially to run off the ordinary ' alternating ' street mains. The following instructions may be useful to those intending to try this latter form of ' Tesla' as a source of electricity for working the tube. First, the large box containing the ' Tesla ' coil must be filled with mineral oil to within in. of the top of the stoneware lining. The whole should then be allowed tostand for three or four hours, to enable the oil to penetrate and displace any moisture which may have settled on the winding; secondly, the small box containing the step-up transformer must also be filled up with the same quality oil, until it begins to flow over the wooden cover under the primary winding; thirdly, to connect up, the street mains are to be coupled to the terminals on the smaller, or step-up transformer, as follows: for weakest power, terminals 1 and 4; for intermediate, terminals 2 and 4; for strongest, terminals 3 and 4. The terminals 1, 2, and 3 should never be used with each other; fourthly, the wires from the step-up transformer are to be connected to the terminals fixed on the flat ebonite, immediately under the spark-gap of the ' Tesla.' The end of the spark-gap discharger should stand about - in. apart at the commencement, and the distance be gradually increased till the full effects are obtained. It must be particularly noted that the step-up transformer can only be used (within very small limits) f...


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Product Details
  • ISBN-13: 9780217269568
  • Publisher: General Books
  • Publisher Imprint: General Books
  • Height: 246 mm
  • No of Pages: 34
  • Spine Width: 2 mm
  • Width: 189 mm
  • ISBN-10: 0217269567
  • Publisher Date: 07 Feb 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 82 gr

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Radiography and the 'x' Rays in Practice and Theory; With Constructional and Manipulatory Details
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