. Practical wireless telegraphy; a complete text book for students of radio communication . Fig. VOLTS i199—Curve Showing Principle of 4 5 6 Balanced Crystal Receiver. RECEIVING CIRCUITS, DETECTORS, TUNING APPARATUS. 173. Fig. 200a—Plan of Type I Aerial Changeover Switch. (Aran. Marconi Co.) The real effect of the balanced crystal receiver is to limit the sound produced in the headtelephones, advantage being taken of the peculiarities of the volt-ampere characteristic can best be explained by the curve, Fig. 199, where the point X represents the adjust-ment of the potentiome-ter P-2
. Practical wireless telegraphy; a complete text book for students of radio communication . Fig. VOLTS i199—Curve Showing Principle of 4 5 6 Balanced Crystal Receiver. RECEIVING CIRCUITS, DETECTORS, TUNING APPARATUS. 173. Fig. 200a—Plan of Type I Aerial Changeover Switch. (Aran. Marconi Co.) The real effect of the balanced crystal receiver is to limit the sound produced in the headtelephones, advantage being taken of the peculiarities of the volt-ampere characteristic can best be explained by the curve, Fig. 199, where the point X represents the adjust-ment of the potentiome-ter P-2 for the crystalD-2, that is, it is thepoint where the additionof a slight antenna F. will cause the cur-rent in the head tele-phone circuit to increaseto the point Y. On theother hand, point X^(lower down on thecurve,) is the adjust-ment corresponding tothe crystal D-1, whereit will be seen that thesame value of antennavoltage which will causea large increase of cur-rent in detector D-2 willcause but a small in-crease of the current through the local circuit of detector D-1. The current corresponding toD-1, is shown at Yi on the curve (which is really a negative current). Hence the current of crystal D-2 p
Size: 2052px × 1218px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
