. An elementary book on electricity and magnetism and their applications. ELECTROMAGNETIC WAVES 565. Fig. 421. — One way of connecting thearc into a wireless telephone circuit. The circuits are shown in figure 421, in which the leadsfrom a d-c. generator of from 200 to 500 volts are broughtthrough a suitable rheostataround the coils of the electro-magnet and connected to theterminals of the arc. There isalso about the arc a shunt cir-cuit, which consists of a con-denser C and self-inductanceP. The oscillations set up inthis circuit act inductivelyupon the secondary coil S,which is attached to
. An elementary book on electricity and magnetism and their applications. ELECTROMAGNETIC WAVES 565. Fig. 421. — One way of connecting thearc into a wireless telephone circuit. The circuits are shown in figure 421, in which the leadsfrom a d-c. generator of from 200 to 500 volts are broughtthrough a suitable rheostataround the coils of the electro-magnet and connected to theterminals of the arc. There isalso about the arc a shunt cir-cuit, which consists of a con-denser C and self-inductanceP. The oscillations set up inthis circuit act inductivelyupon the secondary coil S,which is attached to theaerial and ground. (3) The Chaffee gap consists of a minute gap in hydrogenor alcohol vapor between a copper anode and an aluminumcathode, as shown in figure 422. Except for the difference inthe metal of the two terminals, the halves of the gap are sym-metrical. Each terminal is inserted in a heat-radiating sup-port. The form of gap shown is made air-tight by the use of a flexible phosphor bronze a diaphragm permits the nec-essary adjustment of the condenser and i
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmagnetism, bookyear19
