. Practical wireless telegraphy; a complete text book for students of radio communication . supplied. A compensating inductance joined to thechange-over switch permits the use of either spark discharger without changeof the wave-length of the closed oscillation circuit. A fundamental circuit diagram of the automatic starter for this set has been shown inFig. 74 and a more detailed diagram is now presented in Fig. 255. The circuits of radio-frequency are shov^n in Fig. 256; a front and side view of the panel in Fig. 257 and and a rear view in Fig. 259. 190. Description of Apparatus.—The


. Practical wireless telegraphy; a complete text book for students of radio communication . supplied. A compensating inductance joined to thechange-over switch permits the use of either spark discharger without changeof the wave-length of the closed oscillation circuit. A fundamental circuit diagram of the automatic starter for this set has been shown inFig. 74 and a more detailed diagram is now presented in Fig. 255. The circuits of radio-frequency are shov^n in Fig. 256; a front and side view of the panel in Fig. 257 and and a rear view in Fig. 259. 190. Description of Apparatus.—The motor generator comprises a 110 voltdirect current motor directly connected to a J^ K. W. 120 volt 500 cycle alternator. The motor is designed to operate on pressures between 95 and 115 volts with little changeof speed. The initial speed is controlled by a rheostat mounted on the left hand side ofthe panel. The generator is of the inductor type having a stationary armature and field winding, theflux being varied by a rotor of soft iron. (See photo. Fig. 67.) The open circuit voltage. JAR 254—One Type of MarconiCondenser. (See Fig. 128) Short Wave STANDARD MARINE SETS OF AMERICAN MARCONi CO 235 FIELDRHEOSTAT


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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917