. Practical wireless telegraphy; a complete text book for students of radio communication . small station, the principal circuits are simple, but it is easily seen that whenabout three hundred kilowatts are to be carried in the circuits and turned into high frequencycurrents, the problem must be handled with care. Some of the special, arrangements made touse this large amount of current safelyand efficiently may be of interest to thestudent. The closed oscillating circuit is of in-terest because of the size and constructionof its various elements. The discharger isof the rotating-disc type, an
. Practical wireless telegraphy; a complete text book for students of radio communication . small station, the principal circuits are simple, but it is easily seen that whenabout three hundred kilowatts are to be carried in the circuits and turned into high frequencycurrents, the problem must be handled with care. Some of the special, arrangements made touse this large amount of current safelyand efficiently may be of interest to thestudent. The closed oscillating circuit is of in-terest because of the size and constructionof its various elements. The discharger isof the rotating-disc type, and is directlyconnected to the shaft of the foundation upon which it rests is asolid block of concrete weighing aboutseven tons, supported by piles of insulat-ing compound in such a manner that theframework of the discharger is well pro-tected. The coupling for the alternatoris also insulated, the only live part beingthe discs which serve as the poles betweenwhich the studs pass. The spark dis-charge is well quenched by a blast of airunder high pressure. In order that the. Fig. 3U—Showing the Cage andthe Top Mast Several Hun-dred Feet from Earth.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
