. Practical wireless telegraphy; a complete text book for students of radio communication . ndary winding of the receiving tuner is represented by the coil L-1,the secondary condenser at C-1, the opposed crystals at D-1 and D-2, the potentiometersat P-1 and P-2, the bat-tery at B and the tele-phones at P. To carry out the fun-damental principle of thisreceiver, crystals D-1and D-2 must have likevolt-ampere characteris-tics, and, accordingly,crystals are specially se-lected for the purpose. Briefly, the action ofthis circuit can be de-scribed as follows: Ifcrystals D-1 and D-2 areadjusted to. t
. Practical wireless telegraphy; a complete text book for students of radio communication . ndary winding of the receiving tuner is represented by the coil L-1,the secondary condenser at C-1, the opposed crystals at D-1 and D-2, the potentiometersat P-1 and P-2, the bat-tery at B and the tele-phones at P. To carry out the fun-damental principle of thisreceiver, crystals D-1and D-2 must have likevolt-ampere characteris-tics, and, accordingly,crystals are specially se-lected for the purpose. Briefly, the action ofthis circuit can be de-scribed as follows: Ifcrystals D-1 and D-2 areadjusted to. the samedegree of sensitiveness,their currents will actequally and oppositelyupon the telephone P,and no signals will , however, D-2, let ussay, is adjusted to a highdegree of sensitivenessand D-1 to _a lesser de-gree, signals will be re-ceived. Under these conditions, if an extra severe discharge of static excites the aerial circuit,almost equal effects are produced in the head telephone P by both crystals, and the crashingsounds ordinarily experienced are partially Fig. VOLTS i199—Curve Showing Principle of 4 5 6 Balanced Crystal Receiver. RECEIVING CIRCUITS, DETECTORS, TUNING APPARATUS. 173
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
