. Practical wireless telegraphy; a complete text book for students of radio communication . motor armature. The circuit of the solenoid thenremains open until the main D. C. line switch is opened by hand. If a short circuit existsin any part of the wiring and the power switch is closed again, the relay will open thecircuit once more and continue to do so until the trouble is located. The relay is generallyadjusted to open at 35 amperes. Each terminal post of the motor generator is connected to one terminal of a protectivecondenser to neutralize differences of potential that may be set up by el
. Practical wireless telegraphy; a complete text book for students of radio communication . motor armature. The circuit of the solenoid thenremains open until the main D. C. line switch is opened by hand. If a short circuit existsin any part of the wiring and the power switch is closed again, the relay will open thecircuit once more and continue to do so until the trouble is located. The relay is generallyadjusted to open at 35 amperes. Each terminal post of the motor generator is connected to one terminal of a protectivecondenser to neutralize differences of potential that may be set up by electrostatic inductionfrom the transmitting apparatus. The opposite terminal of the condenser is connected tothe frame of the motor generator and then to earth (see Fig. 79). Six protective condensersare provided for each motor generator, and enclosed in a metallic case. The frame of themotor generator and also the lead covered wires connecting to the apparatus on the panelare thoroughly connected to earth. 226 PRACTICAL WIRELESS TELEGRAPHY. AERIAL ammeter MOTORRHEOSTAT COUPLINGADJUSTEf^. WATTMETER GENERATORRHE05TAT AERIAL TUNING- INDUCTANCE -WAVE LENGTHCHANGING SWITCH QUENCHED r— 4-— GAP OVERLOAD MOTORGENERATOR s RELAY ooa: z y-in —> < ROTARYJ GAP Fig. 247—Front View Marconi 2 K. W. 500 Cycle Transmitting Set. STANDARD MARINE SETS OF AMERICAN MARCONI CO. 227 .SLIDING CONTACT C0NTIN0U5LY VARIABLE^^^AERIAL TUNING INDUCTAMCE PLUG AERIAL TUNING1NDUCTA^4CE SEC ON DAM^OSCILLATIONTRANSfORMER
Size: 1032px × 2421px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
