High Frequency Apparatus: Its Construction and Practical Application (Google eBook)

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Everyday Mechanics Company, 1916 - Electric apparatus and appliances - 243 pages
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Page vii - The second section, comprising four chapters, describes in detail the principles of the transformer, condenser, spark gap, and oscillation transformer, and covers the main points in the design and construction of these devices as applied to the work in hand. The third section covers the construction of small high frequency outfits designed for experimental work in the home laboratory or in the classroom. The fourth section is devoted to electrotherapeutic and X-Ray apparatus.
Page vii - ... most comprehensive and thorough work on this interesting subject ever produced. The book is essentially practical in its treatment and it constitutes an accurate record of the researches of its author over a period of several years, during which time dozens of coils were built and experimented with. The work has been divided into six basic parts. The first two chapters tell the uninitiated reader what the high frequency current is, what it is used for, and how it is produced. The second section,...
Page viii - ... fourth section is devoted to electrotherapeutic and X-Ray apparatus. The fifth describes apparatus for the cultivation of plants and vegetables. The sixth section is devoted to a comprehensive discussion of apparatus of large size for use upon the stage in spectacular productions. The closing chapter, giving the current prices of the parts and materials required for the construction of the apparatus described, is included with a view to expediting the purchase of the necessary goods. The Second...
Page vii - The third section covers the construction of small high frequency outfits designed for experimental work in the home lalMiratory or in the classroom. The fourth section is devoted to electrotherapeutic and X-Ray apparatus. The fifth describes apparatus for the cultivation of plants, and vegetables. The sixth section is devoted to a comprehensive discussion of apparatus of largo size for use upon the stage in spectacular productions.
Page iii - HIGH FREQUENCY APPARATUS, ITS CONSTRUCTION AND PRACTICAL APPLICATION. By THOMAS STANLEY CURTIS. The most comprehensive and thorough work on this interesting subject ever produced. The book is essentially practical in its treatment and it constitutes an accurate record of the researches of its author over a period of several years, during which time dozens of coils were built and experimented...
Page 34 - ... condensed" energy reaches a certain critical value, and then discharge the current across a suitable spark gap, thereby setting up electrical oscillations which constitute what is called the high frequency current.
Page 26 - This lost energy all disappears as heat. The copper losses vary approximately as the square of the load, whereas the core losses are independent of the load. The fact that the core losses are always the same whether the transformer has a light or...
Page 151 - The plot was then sprinkled from the can, the theory being that the current might flow from the can, through the streams of water to the soil. "Plots Nos. 6 and 7 were sub-divided into four individual boxes, two feet square, separated by porcelain insulators and arranged with carbon electrodes at each end.
Page 34 - By placing sheets of paper and tinfoil alternately in a pile and connecting the alternate leads from the foil in multiple, a condenser of...
Page 139 - The condenser acts as a reservoir for the current, which stores up as a charge on the plates until the tension becomes so great that the current leaps across the spark gap in a crashing discharge.

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