. Practical wireless telegraphy; a complete text book for students of radio communication . tus is connected as in , the set must be operated at reducedsecondary voltage because the antennainsulators with this connection are sub-jected to a severe strain which maydestroy their insulation. A plain sparkgap will not function as well at thispoint as a rotary gap because, owing tothe smal* capacity of the antenna andthe current output of the secondarywinding, arcing will be obtained at thegap, resulting in imperfect with the rotary gap the arc is drivenfrom the spark discha
. Practical wireless telegraphy; a complete text book for students of radio communication . tus is connected as in , the set must be operated at reducedsecondary voltage because the antennainsulators with this connection are sub-jected to a severe strain which maydestroy their insulation. A plain sparkgap will not function as well at thispoint as a rotary gap because, owing tothe smal* capacity of the antenna andthe current output of the secondarywinding, arcing will be obtained at thegap, resulting in imperfect with the rotary gap the arc is drivenfrom the spark discharge and a clearspark tone is obtained. The connections of Fig. 333 arepreferable. The primary and secondary circuits can be placed in exact resonance by thecontact clips A and B. If insufficient inductance remains to tune the circuits to one of thestandard waves (350, 450 or 600), the set should be tuned to whatever wave length theauto-transformer affords. A hot-wire ammeter as indicated at A-1 should be inserted inthe circuit in order to obtain conditions of resonance. AERIAL CONDENSER. GAP- Fig. 333—Special Emergency Transmitter. 318 PRACTICAL WIRELESS TELEGRAPHY AEMAL TUNINGINDUCTMCE
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
