. Practical wireless telegraphy; a complete text book for students of radio communication . ical circuitis shown in Fig. 61 where the terminalsconnect to a 5S0 volt direct currentgenerator. Assume that only 110-voItincandescent lamps were available for light-ing purposes; then to prevent the lampsbeing burned out by excessive voltage theyare connected in series. The complete cir-cuit will pass Y-i ampere of current at apressure of S50 volts. A voltmeter around any of the lamps would in-dicate approximately 110 volts. Should anyof the lamps burn out, the circuit will beFig. 60-Simpl
. Practical wireless telegraphy; a complete text book for students of radio communication . ical circuitis shown in Fig. 61 where the terminalsconnect to a 5S0 volt direct currentgenerator. Assume that only 110-voItincandescent lamps were available for light-ing purposes; then to prevent the lampsbeing burned out by excessive voltage theyare connected in series. The complete cir-cuit will pass Y-i ampere of current at apressure of S50 volts. A voltmeter around any of the lamps would in-dicate approximately 110 volts. Should anyof the lamps burn out, the circuit will beFig. 60-Simple Power Qrcmt \,ro\i^n and can only be established when a new lamp is substituted for the burnt one. Since the potential across the entire bank oflamps is 550 volts, and the current Yz ampere, the bank of lamps would require Y^ X 550 =: 275watts or a little more than J4 K. W. A third example of a practical circuit is shown in Fig. 62 wherein alternating currentis transmitted, let us say, from a central power station at 2200 volts pressure, passedthrough the primary winding of the trans-.
Size: 1886px × 1325px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
