. Practical wireless telegraphy; a complete text book for students of radio communication . ive cycle will be interrupted at thepeak, such as A, B, C, D, E, Fig. 297, and the current of successive negative halvesonly will be admitted to the receiving telephone. There will then pass per second through RECEIVERS FOR UNDAMPED OSCILLATIONS OR WAVES. 285 **** ^K telephone 40,540 pulses .of direct current, but, owing to their rapid rate, thesepulses do not individually affect the receiver diaphragm, except when the current is turnedon and off. _ If the circuit interrupter be driven to give, fo
. Practical wireless telegraphy; a complete text book for students of radio communication . ive cycle will be interrupted at thepeak, such as A, B, C, D, E, Fig. 297, and the current of successive negative halvesonly will be admitted to the receiving telephone. There will then pass per second through RECEIVERS FOR UNDAMPED OSCILLATIONS OR WAVES. 285 **** ^K telephone 40,540 pulses .of direct current, but, owing to their rapid rate, thesepulses do not individually affect the receiver diaphragm, except when the current is turnedon and off. _ If the circuit interrupter be driven to give, for example, 39,540 interruptions, the resultwill, be that indicated in the curves, Fig. 298a (not scaled) where alternation A is inter-rupted directly at the peak, al-* ° <^ 0 t f ternation B further down the peak, alternation C still furtherdown, and so on. Now, when a positive alter-nation is interrupted at thepeak, the full amount of nega-tive current is admitted to thehead telephone and when anegative alternation is inter-rupted at the peak, the fullamount of the positive current. Fig. 297—Effect of the Goldschmidt Tone Wheel When DrivenSynchronously.
Size: 2747px × 910px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
