. Practical wireless telegraphy; a complete text book for students of radio communication . side: vicv^oscillatiom transformer Fig. 316—Side View of 300 Kilowatt Oscillation Transformer. of capacity sufficient to keep the air fresh and to draw out the air, which is admitted bythe high pressure blast used for quenching the spark. One of the precautions taken to provide an uninterrupted service is to duplicate any andall pieces of apparatus which are at all likely to be disabled. Thus, two generators and twodisc dischargers are supplied for each station, and a ready means provided to connect eit
. Practical wireless telegraphy; a complete text book for students of radio communication . side: vicv^oscillatiom transformer Fig. 316—Side View of 300 Kilowatt Oscillation Transformer. of capacity sufficient to keep the air fresh and to draw out the air, which is admitted bythe high pressure blast used for quenching the spark. One of the precautions taken to provide an uninterrupted service is to duplicate any andall pieces of apparatus which are at all likely to be disabled. Thus, two generators and twodisc dischargers are supplied for each station, and a ready means provided to connect eitherone to the bus and the oscillation PLftN VIEWOSCILLATION Fie 317—Plan View 300 Kilowatt Oscillation Transformer Showine High Tension Bus-Bar. MARCONI TRANSOCEANIC RADIO TELEQRAPHY. 303 As the oscillation transformers are worthy of note, a sketch of them accompanies thisChapter (Figs. 316, 317 and 318). It will be seen that the coils are mounted on a horizontalaxis and supported on a wooden frame. The primary coil is in series in the closed consists of four turns, each turn being almost a complete ring of about 345 degrees. Theseturns are connected by heavy copper plates, making the equivalent of a helix of four helix is five feet in diameter (See Fig. 318), and the section of the turns one foot indiameter. The turns are made of a wooden former, upon which the conductors are follow along the length of the former, but have a long pitch in a spiral directionlaid upon it in such a way that the length of each wire is the same starting from one connect-ing plate to the next,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
